Electronic equipment and control method for sound production of electronic equipment

Abstract

The invention provides electronic equipment and a sound production control method of the electronic equipment. The electronic equipment comprises a first shell, a second shell, a folding mechanism, a first sound production device and a second sound production device. The first shell and the second shell are oppositely unfolded or folded through the folding mechanism. The first shell is provided with a first sound outlet and a second sound outlet, the first sound production device comprises a first vibrating diaphragm and a second vibrating diaphragm, sound produced by vibration of the first vibrating diaphragm is transmitted out through the first sound outlet, and sound produced by vibration of the second vibrating diaphragm is transmitted out through the second sound outlet. The second shell is provided with a third sound outlet and a fourth sound outlet, the second sound production device comprises a third vibrating diaphragm and a fourth vibrating diaphragm, sound produced by vibration of the third vibrating diaphragm is transmitted out through the third sound outlet, and sound produced by vibration of the fourth vibrating diaphragm is transmitted out through the fourth sound outlet. When the electronic equipment is in a closed state, sound transmitted from the first sound outlet, the second sound outlet, the third sound outlet and the fourth sound outlet forms a quadrupole, so that sound leakage is effectively prevented.

Description

Technical Field

[0001] This application relates to the field of sound-generating equipment technology, and more particularly to an electronic device and a method for controlling the sound generation of the electronic device. Background Technology

[0002] With the rapid development of the consumer electronics industry, consumer demand for various electronic devices is booming. For smart mobile terminals and other electronic devices, consumers are increasingly demanding higher audio-visual experiences, making foldable smart hardware a significant trend in the current consumer electronics industry. For example, foldable phones, as smart mobile terminals, can provide larger screens, satisfying people's visual needs. However, audio leakage during playback or calls on electronic devices negatively impacts the user experience. In quiet public environments, users' audio playback or calls can easily be heard by people nearby, compromising privacy. Therefore, improving the sound leakage prevention capabilities of electronic devices to provide a better user experience is an urgent problem to be solved. Summary of the Invention

[0003] This application provides an electronic device with good sound leakage prevention effect and a method for controlling the sound output of the electronic device.

[0004] In a first aspect, embodiments of this application provide an electronic device. The electronic device includes a first housing, a second housing, a folding mechanism, a first sound-emitting device, and a second sound-emitting device. The folding mechanism is connected to the first housing and the second housing. The first housing and the second housing are unfolded or folded relative to each other via the folding mechanism. The first sound-emitting device is mounted on the first housing. The second sound-emitting device is mounted on the second housing. The first housing has a first sound outlet and a second sound outlet spaced apart. The first sound-emitting device includes a first diaphragm and a second diaphragm. Sound emitted by the vibration of the first diaphragm is transmitted through the first sound outlet, and sound emitted by the vibration of the second diaphragm is transmitted through the second sound outlet. The second housing has a third sound outlet and a fourth sound outlet spaced apart. The second sound-emitting device includes a third diaphragm and a fourth diaphragm. Sound emitted by the vibration of the third diaphragm is transmitted through the third sound outlet, and sound emitted by the vibration of the fourth diaphragm is transmitted through the fourth sound outlet.

[0005] When the electronic device is in anti-leakage mode, the first and second outer shells are positioned opposite each other in a first direction, which is the thickness direction of the electronic device. The vibration directions of the first and second diaphragms are opposite, the vibration directions of the third and fourth diaphragms are opposite, and the vibration directions of the first and third diaphragms are the same. The line connecting the first and third sound outlets is the first connecting line, and the line connecting the second and fourth sound outlets is the second connecting line. The first and second connecting lines intersect. The angle between the central axis direction of the first and second sound outlets is less than or equal to 10°, and / or the angle between the central axis direction of the third and fourth sound outlets is less than or equal to 10°.

[0006] It is understood that the first diaphragm can include two vibration directions: forward vibration and reverse vibration. When the first diaphragm vibrates forward, it compresses the air, and the gas is discharged from the first sound outlet of the electronic device. When the first diaphragm vibrates reverse, it draws in gas from outside the electronic device through the first sound outlet. The vibration directions of other diaphragms can be defined with reference to the vibration direction of the first diaphragm. The diaphragm vibration directions in this application are all relative vibration directions as defined above, rather than absolute vibration directions in space (i.e., the vibration displacement direction of the diaphragm).

[0007] The first and second outer shells can be unfolded or folded relative to each other via a folding mechanism, allowing the electronic device to switch between an open and closed state. When the electronic device is in anti-leakage mode, it can be in a closed state, with the first and second outer shells positioned opposite each other in a first direction. The line connecting the first and third sound outlets is called the first line, and the line connecting the second and fourth sound outlets is called the second line. The first and second lines are intersecting, forming the structural conditions for a quadrupole. Intersecting means that the projections of the first and second lines onto the reference plane intersect. The reference plane can be any plane. Spatially, the first and second lines may or may not intersect. When the electronic device is in a closed state, the vibration directions of the first diaphragm and the second diaphragm are opposite, and the first and second sound outlets can transmit sound waves with opposite phases. The vibration directions of the third diaphragm and the fourth diaphragm are opposite, and the third and fourth sound outlets can transmit sound waves with opposite phases. Alternatively, if the vibration directions of the first and third diaphragms are the same, the first and third sound outlets can transmit sound waves with the same phase. The sound waves transmitted from the first, second, third, and fourth sound outlets can form an acoustic quadrupole in space. Compared to a dipole, the acoustic quadrupole can more effectively reduce far-field sound leakage, effectively improve call privacy, and has good privacy protection capabilities.

[0008] The angle between the central axis of the first sound outlet and the central axis of the second sound outlet can be less than or equal to 10°, so that the first and second sound outlets are oriented roughly the same. In a plane parallel to the first (or second) sound outlet, the sound transmitted from the first and second sound outlets in all directions is more uniform, reducing the risk of louder sound in one direction in that plane.

[0009] The angle between the central axis of the third sound outlet and the central axis of the fourth sound outlet can be less than or equal to 10°. The orientation of the third sound outlet and the orientation of the fourth sound outlet are roughly the same. In a plane parallel to the third (or fourth) sound outlet, the sound transmitted from the third and fourth sound outlets in all directions is more uniform, reducing the risk of louder sound in one direction in that plane.

[0010] In some possible implementations, the first housing includes a first front surface, a first back surface, and a first top surface. The first front surface and the first back surface are positioned opposite each other in a first direction, and the first top surface connects the first front surface and the first back surface. When the electronic device is in a sound leakage prevention mode, the first housing and the second housing are positioned opposite each other in a first direction, with the first front surface facing the second housing and the first back surface facing away from the second housing. Both the first sound outlet and the second sound outlet are located on the first back surface.

[0011] Understandably, when a user plays audio using the anti-leakage mode of an electronic device, the first back of the electronic device can face the user's ear. Compared to a solution where the first and second sound outlets are located on the first top surface of the first housing, in this embodiment, the first and second sound outlets are located on the first back, closer to the user's ear. The sound emitted from the first and second sound outlets propagates towards the side where the user's ear is located, resulting in a louder sound and improved user experience.

[0012] In some possible implementations, when the electronic device is in the open state, the first housing and the second housing are unfolded relative to each other, arranged side by side along a second direction, with the first direction and the second direction forming an angle. The line connecting the first sound outlet and the second sound outlet is a third line, and the angle between the third line and the second direction is an acute angle, or the third line and the second direction are parallel.

[0013] It is understandable that the second direction is the length direction of the electronic device after it is opened. Compared with the scheme where the first and second sound outlets are set along the thickness direction of the electronic device, in this embodiment, the first and second sound outlets can be arranged along the second direction, that is, the first and second sound outlets are arranged along the length direction of the electronic device. The first and second sound outlets are less restricted, so the first and second sound outlets can be designed to be larger.

[0014] In some possible implementations, the first and second sound outlets are symmetrical about the axis of the first housing, which is parallel to the bending axis of the electronic device.

[0015] Understandably, when a user plays audio using the anti-leakage mode on an electronic device, regardless of whether the user holds the device in their left or right hand, the distance between the first and second sound output ports and the user's ears is roughly the same in the second direction. This prevents the first or second sound output port from being closer to the user's ear when on the left or right side, thus avoiding a situation where the sound is louder. Users no longer need to distinguish between left and right hands when using the electronic device, which improves the user experience.

[0016] In some possible implementations, both the first sound outlet and the second sound outlet are located on the top of the first housing.

[0017] Understandably, when using electronic devices, users can hold the device by the bottom and bring the top of the first casing close to their ears. The first and second sound outlets are closer to the user's ears, allowing the user to hear louder sounds.

[0018] In some possible implementations, the second housing includes a second front surface, a second back surface, and a second top surface. The second front surface and the second back surface are positioned opposite each other in a first direction, and the second top surface connects the second front surface and the second back surface. When the electronic device is in anti-leakage mode, the second front surface faces the first front surface. Both the third and fourth sound outlets are located on the second top surface.

[0019] Understandably, the third and fourth sound outlets can be located at the top of the second casing. When using the electronic device, the user can hold it by the bottom and bring the top of the second casing close to their ear. With the third and fourth sound outlets closer to the user's ear, the user can hear a louder sound.

[0020] In some possible implementations, the third and fourth sound outlets are connected by a fourth line, and the angle between the fourth line and the second direction is an acute angle, or the fourth line is parallel to the second direction.

[0021] It is understandable that, compared to the scheme in which the third and fourth sound outlets are arranged along the thickness direction of the electronic device, in this embodiment, the third and fourth sound outlets can be arranged along the second direction, that is, the third and fourth sound outlets are arranged along the length direction of the electronic device. The third and fourth sound outlets are less restricted, so the third and fourth sound outlets can be designed to be larger.

[0022] In some possible implementations, the third and fourth lines are parallel. In this way, compared to a scheme where the two lines are not parallel, the quadrupole sound field formed by the four sound outlets in the plane formed by the third and fourth lines has a more uniform sound leakage prevention effect in all directions.

[0023] In some possible implementations, the first sound outlet is circular or elongated.

[0024] In some possible implementations, the first sound-generating device includes two single-diaphragm loudspeakers, with the first diaphragm and the second diaphragm being the diaphragms of the two single-diaphragm loudspeakers, respectively. Alternatively, the first sound-generating device includes a dual-diaphragm loudspeaker, with the first diaphragm and the second diaphragm being the two diaphragms of the dual-diaphragm loudspeaker. It is understood that there can be various arrangements of the first diaphragm and the second diaphragm in the first sound-generating device, and this application does not limit the specific structure of the first sound-generating device.

[0025] In some possible implementations, the first diaphragm and the second diaphragm are the two diaphragms of a dual-diaphragm loudspeaker. The first diaphragm and the second diaphragm are arranged along the thickness direction of the first diaphragm, or the first diaphragm and the second diaphragm are arranged along the length direction of the first diaphragm.

[0026] It is understandable that when the first and second diaphragms are arranged along the thickness direction of the first diaphragm, the first sound-generating device can be a counter-rotating dual-diaphragm loudspeaker. When the first and second diaphragms are arranged along the length direction of the first diaphragm, the first sound-generating device can be a transverse dual-diaphragm loudspeaker.

[0027] In some possible implementations, the electronic device further includes a first driver, a second driver, a third driver, and a fourth driver. The first and second drivers are both mounted in a first housing, and the third and fourth drivers are both mounted in a second housing. The first driver provides a first drive signal to vibrate the first diaphragm; the second driver provides a second drive signal to vibrate the second diaphragm; the third driver provides a third drive signal to vibrate the third diaphragm; and the fourth driver provides a fourth drive signal to vibrate the fourth diaphragm. When the electronic device is in anti-leakage mode, the phases of the first and second drive signals are opposite, the phases of the third and fourth drive signals are opposite, and the phases of the first and third drive signals are the same. When the electronic device is in external speaker mode, the phases of the first, second, third, and fourth drive signals are the same.

[0028] Understandably, the drive signals for the first and second sound-generating devices do not need to be transmitted through the rotating shaft, resulting in a simpler electrical signal transmission path. The vibrations of the first, second, third, and fourth diaphragms are controlled by four independent drivers, making them less susceptible to interference and ensuring more stable drive signals. This facilitates symmetrical vibration of the four diaphragms, leading to better sound leakage prevention in the electronic device. Furthermore, the vibrations of the first, second, third, and fourth diaphragms are controlled independently by the four independent drivers, allowing for independent control of their vibration directions. For example, when the electronic device is in sound leakage prevention mode, the first and third diaphragms can vibrate in the forward direction, while the second and fourth diaphragms can vibrate in the reverse direction; or, conversely, the first and third diaphragms can vibrate in the reverse direction, while the second and fourth diaphragms can vibrate in the forward direction.

[0029] Secondly, embodiments of this application provide a control method for sound generation in a foldable electronic device. The electronic device includes a first housing, a second housing, a folding mechanism, a first sound-generating device, and a second sound-generating device. The folding mechanism is connected to the first and second housings, and the first and second housings are unfolded or folded relative to each other via the folding mechanism. The first sound-generating device is mounted on the first housing, and the second sound-generating device is mounted on the second housing. The first housing has a first sound outlet and a second sound outlet spaced apart. The first sound-generating device includes a first diaphragm and a second diaphragm. Sound emitted by the vibration of the first diaphragm is transmitted through the first sound outlet, and sound emitted by the vibration of the second diaphragm is transmitted through the second sound outlet. The second housing has a third sound outlet and a fourth sound outlet spaced apart. The second sound-generating device includes a third diaphragm and a fourth diaphragm. Sound emitted by the vibration of the third diaphragm is transmitted through the third sound outlet, and sound emitted by the vibration of the fourth diaphragm is transmitted through the fourth sound outlet.

[0030] When the electronic device is in anti-leakage mode, the first and second outer shells are positioned opposite each other in a first direction, which is the thickness direction of the electronic device. The vibration directions of the first and second diaphragms are opposite, the vibration directions of the third and fourth diaphragms are opposite, and the vibration directions of the first and third diaphragms are the same. The line connecting the first and third sound outlets is the first connecting line, and the line connecting the second and fourth sound outlets is the second connecting line. The first and second connecting lines intersect. The angle between the central axis direction of the first and second sound outlets is less than or equal to 10°, and / or the angle between the central axis direction of the third and fourth sound outlets is less than or equal to 10°.

[0031] The electronic device also includes a first driver, a second driver, a third driver, and a fourth driver, wherein the first driver and the second driver are both mounted in a first housing, and the third driver and the fourth driver are both mounted in a second housing.

[0032] Control methods include:

[0033] Confirm the sound output mode of the electronic device, which includes a sound leakage prevention mode and an external speaker mode.

[0034] When the electronic device is in the sound leakage prevention mode, the first driver, the second driver, the third driver and the fourth driver respectively provide the first driving signal, the second driving signal, the third driving signal and the fourth driving signal to drive the first diaphragm, the second diaphragm, the third diaphragm and the fourth diaphragm to vibrate. The phase of the first driving signal is opposite to the phase of the second driving signal, the phase of the third driving signal is opposite to the phase of the fourth driving signal, and the phase of the first driving signal is the same as the phase of the third driving signal.

[0035] When the electronic device is in external speaker mode, the first driver, the second driver, the third driver and the fourth driver respectively provide a first driving signal, a second driving signal, a third driving signal and a fourth driving signal to drive the first diaphragm, the second diaphragm, the third diaphragm and the fourth diaphragm to vibrate, wherein the phase of the first driving signal, the phase of the second driving signal, the phase of the third driving signal and the phase of the fourth driving signal are the same.

[0036] Understandably, the vibrations of the first, second, third, and fourth diaphragms are controlled by four independent drivers, making them less susceptible to interference and resulting in more stable drive signals. This facilitates the achievement of symmetrical vibrations of the four diaphragms, leading to better sound leakage prevention in electronic devices.

[0037] Thirdly, embodiments of this application provide an electronic device. The electronic device includes a first housing, a second housing, a folding mechanism, a first sound-emitting device, and a second sound-emitting device. The folding mechanism is connected to the first and second housings, and the first and second housings are unfolded or folded relative to each other via the folding mechanism. The first sound-emitting device is mounted on the first housing, and the second sound-emitting device is mounted on the second housing. The first housing has a first sound outlet and a second sound outlet spaced apart. The first sound-emitting device includes a first diaphragm and a second diaphragm. Sound emitted by the vibration of the first diaphragm is transmitted through the first sound outlet, and sound emitted by the vibration of the second diaphragm is transmitted through the second sound outlet. The second housing has a third sound outlet and a fourth sound outlet spaced apart. The second sound-emitting device includes a third diaphragm and a fourth diaphragm. Sound emitted by the vibration of the third diaphragm is transmitted through the third sound outlet, and sound emitted by the vibration of the fourth diaphragm is transmitted through the fourth sound outlet. When the electronic device is in the anti-leakage mode, the first shell and the second shell are arranged opposite each other in a first direction, which is the thickness direction of the electronic device. The vibration direction of the first diaphragm is the same as that of the second diaphragm, the vibration direction of the third diaphragm is the same as that of the fourth diaphragm, and the vibration direction of the first diaphragm is opposite to that of the third diaphragm. The line connecting the second, third, and fourth sound outlets is a first plane. The first sound outlet is located outside the first plane. The line connecting the first and second sound outlets is a third line, and the line connecting the third and fourth sound outlets is a fourth line. The third and fourth lines are arranged intersecting.

[0038] Understandably, when an electronic device is in anti-leakage mode, it is in a closed state. The first and second outer shells are positioned opposite each other in a first direction. The vibration directions of the first and second diaphragms are the same, while the vibration directions of the third and fourth diaphragms are the same, and the vibration directions of the first and third diaphragms are opposite. The sound waves emitted from the first, second, third, and fourth sound outlets can form an acoustic quadrupole in space, thus putting the electronic device in anti-leakage mode. Understandably, compared to a dipole, an acoustic quadrupole can more effectively reduce far-field sound leakage, effectively improving call privacy and providing excellent privacy protection.

[0039] When the electronic device is in external speaker mode, it can be either open or closed. In this mode, the vibration directions of the first, second, third, and fourth diaphragms can be the same, and the sound phases of the first, second, third, and fourth sound outlets can be the same. Therefore, the four sound waves can be superimposed to provide sufficient loudness and higher sound quality.

[0040] Furthermore, the diaphragms on the same housing vibrate in the same direction (the vibration direction of the first diaphragm is the same as that of the second diaphragm, and the vibration direction of the third diaphragm is the same as that of the fourth diaphragm). In this way, two diaphragms on the same housing can share the same drive signal, and the four diaphragms can be controlled by two independent drives, which is more cost-effective.

[0041] In some possible implementations, the first sound outlet and the second sound outlet are located at different heights.

[0042] It is understandable that by setting the first and second sound outlets at different heights, when the first and second housings are positioned relative to each other in the first direction, it is beneficial for the lines connecting the second, third, and fourth sound outlets to form a first plane. The first sound outlet can be located outside the first plane to allow the third and fourth lines to be intersected.

[0043] In some possible implementations, the first housing includes a first front surface, a first back surface, and a first top surface. The first front surface and the first back surface are positioned opposite each other in a first direction, and the first top surface connects the first front surface and the first back surface. The second housing includes a second front surface, a second back surface, and a second top surface. The second front surface and the second back surface are positioned opposite each other in a first direction, and the second top surface connects the second front surface and the second back surface. When the electronic device is in a sound leakage prevention mode, the first housing and the second housing are positioned opposite each other in a first direction, with the first front surface facing the second front surface of the second housing and the first back surface facing away from the second housing. A first sound outlet is located on the first back surface, a second sound outlet is located on the first top surface, and a third and a fourth sound outlet are both located on the second top surface.

[0044] It is understood that the technical solution of this embodiment does not require changing the shape of the first outer shell to achieve the first and second sound outlets at different heights, thus allowing the first sound outlet to be located outside the first plane. Furthermore, compared to a solution where both the first and second sound outlets are located on the first top surface, this embodiment, with the first and second sound outlets located on different surfaces of the first outer shell, allows the first sound outlet to be located at any position on the first back surface and the second sound outlet at any position on the first top surface. This reduces the limitations on the first and second sound outlets, allowing for more arrangement options and potentially larger sizes. Additionally, with the first sound outlet located on the first back surface, the external screen 320 of the electronic device can be located on the first back surface. When the user uses the electronic device, the first sound outlet can face the user's side, and when the electronic device emits sound, the sound waves from the first sound outlet can propagate towards the user's side. Compared to a solution where both the first and second sound outlets are located on the first top surface, this embodiment improves the loudness of the sound heard by the user, thus enhancing the user experience.

[0045] In some possible implementations, the symmetrical plane of the first housing passes through the first and second sound outlets, and the symmetrical plane of the first housing is parallel to the bending axis direction of the electronic device and parallel to the first direction.

[0046] Understandably, when a user plays audio using the anti-leakage mode on an electronic device, regardless of whether the user holds the device in their left or right hand, the positions of the first and second sound output ports relative to the user's ears are roughly the same. This prevents the sound from being louder when the first and second sound output ports are closer to the user's ears, whether the user is on their left or right side. Users don't need to distinguish between their left and right hands when using the electronic device, which improves the user experience.

[0047] In some possible implementations, when the electronic device is in the open state, the first and second housings are unfolded relative to each other, arranged side-by-side along a second direction, with the first and second directions forming an angle. The angle between the fourth connecting line and the second direction is acute, or the fourth connecting line and the second direction are parallel.

[0048] It is understandable that, compared to the scheme in which the third and fourth sound outlets are arranged along the thickness direction of the electronic device, in this embodiment, the third and fourth sound outlets can be arranged along the second direction, that is, the third and fourth sound outlets are arranged along the length direction of the electronic device. The third and fourth sound outlets are less restricted, so the third and fourth sound outlets can be designed to be larger.

[0049] In some possible implementations, the third and fourth sound outlets are symmetrical about the axis of the second housing, which is parallel to the bending axis of the electronic device.

[0050] In this way, when a user plays audio using the anti-leakage mode on their electronic device, regardless of whether the user holds the device in their left or right hand, the third and fourth sound output ports will be positioned approximately the same relative to the user's ears in the second direction. This prevents one side from being closer to the user's ears and resulting in a louder sound. Users do not need to distinguish between their left and right hands when using the anti-leakage mode, which improves the user experience.

[0051] In some possible implementations, the first sound-generating device includes two single-diaphragm loudspeakers, with the first diaphragm and the second diaphragm being the diaphragms of the two single-diaphragm loudspeakers, respectively. Alternatively, the first sound-generating device includes a dual-diaphragm loudspeaker, with the first diaphragm and the second diaphragm being the two diaphragms of the dual-diaphragm loudspeaker.

[0052] In some possible implementations, the electronic device further includes a first driver and a second driver, the first driver being mounted in a first housing and the second driver in a second housing. The first driver provides a first drive signal to vibrate a first diaphragm and a second diaphragm, and the second driver provides a second drive signal to vibrate a third diaphragm and a fourth diaphragm. When the electronic device is in anti-leakage mode, the phases of the first drive signal and the second drive signal are opposite. When the electronic device is in external speaker mode, the phases of the first drive signal and the second drive signal are the same.

[0053] Understandably, the first driver can be housed in the first housing, and the second driver can be housed in the second housing. The drive signals for the first and second sound-generating devices do not need to be transmitted through the rotating shaft, simplifying the electrical signal transmission path. Furthermore, the first and second diaphragms share the same drive signal (the first drive signal), and the vibration direction of the first diaphragm can be the same as that of the second diaphragm. The third and fourth diaphragms share the same drive signal (the second drive signal), and the vibration direction of the third diaphragm can be the same as that of the fourth diaphragm. This reduces the number of independent drivers included in the electronic device, lowering costs.

[0054] Fourthly, embodiments of this application provide a control method for sound generation in a foldable electronic device. The electronic device includes a first housing, a second housing, a folding mechanism, a first sound-generating device, and a second sound-generating device. The folding mechanism is connected to the first and second housings, and the first and second housings are unfolded or folded relative to each other via the folding mechanism. The first sound-generating device is mounted on the first housing, and the second sound-generating device is mounted on the second housing. The first housing has a first sound outlet and a second sound outlet spaced apart. The first sound-generating device includes a first diaphragm and a second diaphragm. Sound emitted by the vibration of the first diaphragm is transmitted through the first sound outlet, and sound emitted by the vibration of the second diaphragm is transmitted through the second sound outlet. The second housing has a third sound outlet and a fourth sound outlet spaced apart. The second sound-generating device includes a third diaphragm and a fourth diaphragm. Sound emitted by the vibration of the third diaphragm is transmitted through the third sound outlet, and sound emitted by the vibration of the fourth diaphragm is transmitted through the fourth sound outlet. When the electronic device is in the anti-leakage mode, the first shell and the second shell are arranged opposite each other in a first direction, which is the thickness direction of the electronic device. The vibration direction of the first diaphragm is the same as that of the second diaphragm, the vibration direction of the third diaphragm is the same as that of the fourth diaphragm, and the vibration direction of the first diaphragm is opposite to that of the third diaphragm. The line connecting the second, third, and fourth sound outlets is a first plane. The first sound outlet is located outside the first plane. The line connecting the first and second sound outlets is a third line, and the line connecting the third and fourth sound outlets is a fourth line. The third and fourth lines are arranged intersecting.

[0055] The electronic device also includes a first driver and a second driver, the first driver being mounted in a first housing and the second driver being mounted in a second housing.

[0056] Control methods include:

[0057] Confirm the sound output mode of the electronic device, which includes a sound leakage prevention mode and an external speaker mode.

[0058] When the electronic device is in the sound leakage prevention mode, the first driver provides a first driving signal to drive the first diaphragm and the second diaphragm to vibrate, and the second driver provides a second driving signal to drive the third diaphragm and the fourth diaphragm to vibrate, wherein the phase of the first driving signal and the phase of the second driving signal are opposite.

[0059] When the electronic device is in external speaker mode, the first driver provides a first driving signal to drive the first and second diaphragms to vibrate, and the second driver provides a second driving signal to drive the third and fourth diaphragms to vibrate, wherein the phase of the first driving signal and the phase of the second driving signal are the same.

[0060] It is understandable that the first and second diaphragms share the same driving signal, and the vibration direction of the first diaphragm can be the same as that of the second diaphragm. Similarly, the third and fourth diaphragms share the same driving signal, and the vibration direction of the third diaphragm can be the same as that of the fourth diaphragm. This reduces the number of independent drivers in the electronic device, thus lowering costs. Attached Figure Description

[0061] To illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be described below.

[0062] Figure 1 This is a schematic diagram of the electronic device provided in the embodiment of this application in the open state;

[0063] Figure 2 yes Figure 1 A schematic diagram of one embodiment of the electronic device in a closed state;

[0064] Figure 3 yes Figure 1 An exploded view of one embodiment of the electronic device shown;

[0065] Figure 4 yes Figure 1 A partial structural diagram of the electronic device shown in the diagram from another angle when it is in a closed state;

[0066] Figure 5 yes Figure 1A partial structural diagram of the electronic device shown in the picture, viewed from another angle when it is in the open state;

[0067] Figure 6a yes Figure 3 A schematic diagram of one embodiment of the first and second sound-generating devices shown in the figure;

[0068] Figure 6b This is a schematic diagram of one embodiment of the vibration displacement of the first and second diaphragms changing over time;

[0069] Figure 7 This is a flowchart of a control method for sound generation in an electronic device according to one embodiment of this application;

[0070] Figure 8 This is a schematic diagram of another implementation of the electronic device provided in this application in a closed state;

[0071] Figure 9 yes Figure 8 An exploded view of one embodiment of the electronic device shown;

[0072] Figure 10 yes Figure 8 A partial structural diagram of the electronic device shown in the diagram from another angle when it is in a closed state;

[0073] Figure 11 yes Figure 8 A partial structural diagram of the electronic device shown in the picture, viewed from another angle when it is in the open state;

[0074] Figure 12 yes Figure 9 A schematic diagram of another embodiment of the first and second sound-generating devices shown in the figure;

[0075] Figure 13 This is a flowchart of a control method for sound generation in an electronic device, provided in another embodiment of this application. Detailed Implementation

[0076] The embodiments of this application are described below with reference to the accompanying drawings. The embodiments described herein are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0077] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. It should be understood that in this application, "electrical connection" can be understood as components physically contacting and conducting electricity; it can also be understood as a form of connection between different components in a circuit structure through physical lines that can transmit electrical signals, such as copper foil or wires on a printed circuit board (PCB). "Connection" and "connected" can both refer to a mechanical connection relationship or a physical connection relationship. For example, A connecting to B or A being connected to B can mean that there are fastening components (such as screws, bolts, rivets, etc.) between A and B, or that A and B are in contact with each other and are difficult to separate.

[0078] Furthermore, the term "fixed" in this document should be interpreted broadly. For example, "fixed" can mean direct fixing or indirect fixing through an intermediate medium. "Fixed" refers to connections where the relative positional relationship remains unchanged after connection. The directional terms used in the embodiments of this application, such as "upper" and "lower," are merely for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. "Multiple" refers to two or more.

[0079] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0080] In the embodiments of this application, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," and "fourth" may explicitly or implicitly include one or more of that feature.

[0081] Furthermore, the limitations on relative positional relationships mentioned in the embodiments of this application, such as parallel, perpendicular, and aligned, are all relative to the current technological level and are not absolutely strict limitations. Slight deviations are allowed; approximations of parallelism, perpendicularity, and alignment are all acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 and 10 degrees. Similarly, "A and B are perpendicular" means that A and B are perpendicular or approximately perpendicular, and the angle between A and B can be between 80 and 100 degrees.

[0082] The embodiments of this application are described below with reference to the accompanying drawings.

[0083] Figure 1 This is a schematic diagram of the electronic device 1000 provided in the embodiments of this application in the open state. It should be noted that the figure only schematically shows some components included in the electronic device 1000; the actual size, position, and structure of these components are not limited by the figure. Similarly, the following figures only schematically show some components; the actual size, position, and structure of these components are not limited by the following figures. Specific details will not be elaborated further below.

[0084] For example, the electronic device 1000 can be a foldable mobile phone, a foldable tablet computer, a foldable personal computer, a foldable laptop computer, a foldable in-vehicle device, or a foldable wearable device. Figure 1 The electronic device 1000 of the illustrated embodiment is described using a foldable mobile phone as an example. For ease of description, as follows... Figure 1 As shown, the bending axis direction of electronic device 1000 is defined as the X-axis direction. The thickness direction of electronic device 1000 is defined as the Z-axis direction. The Y-axis direction is perpendicular to both the X-axis and Z-axis directions. In other embodiments, the coordinate system can be flexibly set according to other requirements.

[0085] Figure 2 yes Figure 1 This is a schematic diagram of one embodiment of the electronic device 1000 in a closed state. Figure 3 yes Figure 1 An exploded view of one embodiment of the electronic device 1000 shown.

[0086] like Figure 1 , Figure 2 and Figure 3 As shown, the electronic device 1000 includes a first housing 100, a second housing 200, a screen 300, and a folding mechanism 400.

[0087] For example, a folding mechanism 400 is connected between a first housing 100 and a second housing 200. The first housing 100 and the second housing 200 can be relatively unfolded or folded through the folding mechanism 400, thereby allowing the electronic device 1000 to switch between an open state and a closed state. Figure 1 This indicates that electronic device 1000 is in the "on" state. Figure 2 This illustrates that the electronic device 1000 is in a folded state. It is understandable that, due to the precision of the manufacturing and assembly processes, the opening angle between the first outer shell 100 and the second outer shell 200 can be 2°, 5°, 10°, etc., when the electronic device 1000 is in a closed state.

[0088] For example, when the electronic device 1000 is in a closed state, the first housing 100 and the second housing 200 can be folded relative to each other, and the first housing 100 and the second housing 200 can be arranged opposite each other in a first direction. The first direction is the thickness direction of the electronic device 1000, that is, the Z-axis direction in the figure. The first housing 100 and the second housing 200 being arranged opposite each other in the first direction means that the projection of the first housing 100 onto the second housing 200 along the first direction coincides with a portion of the second housing 200. When the electronic device 1000 is in an open state, the first housing 100 and the second housing 200 are unfolded relative to each other, and the first housing 100 and the second housing 200 can be arranged side by side along a second direction. The second direction and the first direction are arranged at an angle. The figure illustrates this by taking the second direction being perpendicular to the first direction as an example.

[0089] Screen 300 can be used to display images and videos, etc. The screen may include a display panel. The display panel may be a liquid crystal display (LCD), an organic light-emitting diode (OLED) screen, an active-matrix organic light-emitting diode (AMOLED) screen, a mini organic light-emitting diode (MLED) screen, a micro organic light-emitting diode (MOLED) screen, a quantum dot light-emitting diode (QLED) screen, etc. In some embodiments, electronic device 1000 may include one or more screens.

[0090] It is understood that screen 300 can be an internal screen 310, an external screen 320, or both. When the electronic device 1000 is in a closed state, the image displayed on the internal screen 310 is not visible from the outside of the electronic device 1000. The external screen 320 can be used to display images when the electronic device 1000 is in a closed state.

[0091] Figure 1 and Figure 2 The following description uses screen 300, which includes both an internal screen 310 and an external screen 320, as an example. Screen 300 may include an internal screen 310 and an external screen 320. The internal screen 310 and the external screen 320 may be set apart or connected together. Figure 1 and Figure 2 The following example illustrates the spacing between the internal screen 310 and the external screen 320.

[0092] For example, the internal screen 310 may include a first display area 311, a second display area 312, and a third display area 313. Figure 3 (Illustrated by dashed lines). The second display area 312 is connected between the first display area 311 and the third display area 313. The second display area 312 is bendable. The first display area 311 is fixed to the first housing 100, the second display area 312 is fixed to the folding mechanism 400, and the third display area 313 is fixed to the second housing 200. Thus, when the first housing 100 and the second housing 200 are unfolded or folded relative to each other by the folding mechanism 400, the second display area 312 can bend. The first display area 311 and the third display area 313 can overlap each other in the Z-axis direction.

[0093] For example, when the electronic device 1000 is in the open state, the first display area 311, the second display area 312, and the third display area 313 are all located on the same side of the first housing 100 and the second housing 200. For example, the first display area 311, the second display area 312, and the third display area 313 can be approximately 180° apart (slight deviations are allowed, such as 165°, 177°, or 185°). At this time, the electronic device 1000 has a continuous large display area, that is, the electronic device 1000 can achieve large-screen display, and the user experience is better.

[0094] For example, when the electronic device 1000 is in a folded state, the second display area 312 can be bent. When the electronic device 1000 is in a closed state, the first display area 311 and the third display area 313 overlap each other in the Z-axis direction. At this time, the XY plane dimensions of the electronic device 1000 are small, making it easy for users to carry and store. Figure 2This illustrates that when the electronic device 1000 is in a closed state, the first display area 311 and the third display area 313 can be located between the first housing 100 and the second housing 200.

[0095] Appendix Figure 2 This illustration shows that when the electronic device 1000 is in a closed state, the first display area 311 and the third display area 313 can be located between the first housing 100 and the second housing 200. In other embodiments, when the screen 300 is an external screen 320, a portion of the screen 300 can be located on the side of the first housing 100 away from the second housing 200, and a portion of the screen 300 can also be located on the side of the second housing 200 away from the first housing 100. Specific details are not limited in this embodiment.

[0096] For example, the external screen 320 may be disposed on the side of the first housing 100 away from the internal screen 310. (See attached image) Figure 2 This illustrates that when the electronic device 1000 is in a closed state, the display surface of the external screen 320 can face the outside of the electronic device 1000. Thus, the external screen 320 can still be used to display images even when the electronic device 1000 is closed, allowing the user to operate the electronic device 1000 through the external screen 320. In other embodiments, the external screen 320 can also be located on the side of the second housing 200 away from the internal screen 310.

[0097] Understandably, the electronic device 1000 is equipped with both an internal screen 310 and an external screen 320 to meet different display size requirements. When a user needs a larger display area, the first casing 100 and the second casing 200 of the electronic device 1000 can be opened.

[0098] In other embodiments, the electronic device 1000 may also exclude the screen 300.

[0099] In addition, Figure 1 With appendix Figure 2 All illustrations show that the electronic device 1000 can fold once. In other embodiments, the electronic device 1000 can also fold multiple times, and the electronic device 1000 may include more housings and folding mechanisms.

[0100] In addition, Figure 1 With appendix Figure 2 The illustrations all show that the electronic device 1000 is folded horizontally. In other embodiments, the electronic device 1000 can also be folded vertically.

[0101] In some embodiments, the interior of the first housing 100 may have a first receiving space 101. The interior of the second housing 200 may have a second receiving space 201. The first receiving space 101 and the second receiving space 201 may be used to install electronic components of the electronic device 1000.

[0102] In some embodiments, the electronic device 1000 further includes a first motherboard 410 and a second motherboard 420. The first motherboard 410 may be installed in a first receiving space 101, and the second motherboard 420 may be installed in a second receiving space 201.

[0103] In some embodiments, the electronic device 1000 may further include one or more electronic components (not shown). The electronic components may be installed in the first receiving space 101 or the second receiving space 201.

[0104] Exemplary examples show that the electronic device may include a processor, an external memory interface, internal memory, a universal serial bus (USB) interface, a charging management module, a power management module, a battery, an audio module, a first sound-emitting device 500, a second sound-emitting device 600, a microphone, a sensor module, etc. It is understood that the structures illustrated in the embodiments of this application do not constitute a specific limitation on the electronic device 1000. In other embodiments of this application, the electronic device 1000 may include more or fewer components, or combine certain components, or split certain components, or have different component arrangements. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0105] For example, a processor may include one or more processing units, such as an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural network processing unit (NPU). These different processing units may be independent devices or integrated into one or more processors.

[0106] The controller can generate operation control signals based on the instruction opcode and timing signals to control the fetching and execution of instructions.

[0107] The processor may also include memory for storing instructions and data. In some embodiments, the memory in the processor is a cache memory. This memory can hold instructions or data that the processor has just used or that are used repeatedly. If the processor needs to use the instruction or data again, it can retrieve it directly from memory. This avoids repeated accesses, reduces processor wait time, and thus improves system efficiency.

[0108] In some embodiments, the processor may include one or more interfaces. Interfaces may include inter-integrated circuit (I2C) interfaces, inter-integrated circuit sound (I2S) interfaces, pulse code modulation (PCM) interfaces, universal asynchronous receiver / transmitter (UART) interfaces, mobile industry processor interfaces (MIPI) interfaces, general-purpose input / output (GPIO) interfaces, subscriber identity module (SIM) interfaces, and / or universal serial bus (USB) interfaces, etc.

[0109] The I2C interface is a bidirectional synchronous serial bus, including a serial data line (SDA) and a serial clock line (SCL). In some embodiments, the processor may include multiple I2C buses. The processor can couple touch sensors, chargers, flashlights, cameras, etc., through different I2C bus interfaces. For example, the processor can couple a touch sensor through the I2C interface, enabling the processor and the touch sensor to communicate via the I2C bus interface, thus realizing the touch function of electronic device 1000.

[0110] The I2S interface can be used for audio communication. In some embodiments, the processor may include multiple I2S buses. The processor can couple with the audio module via the I2S bus to enable communication between the processor and the audio module.

[0111] The PCM interface can also be used for audio communication, sampling, quantizing, and encoding analog signals.

[0112] The MIPI interface can be used to connect a processor to devices such as a screen and a camera. MIPI interfaces include a camera serial interface (CSI) and a display serial interface (DSI). In some embodiments, the processor and screen communicate via the DSI interface to realize the display function of the electronic device 1000.

[0113] A USB interface is an interface that conforms to the USB standard specification, specifically a Mini USB interface, a Micro USB interface, a USB Type-C interface, etc. The USB interface can be used to connect a charger to charge the electronic device 1000, and it can also be used for data transfer between the electronic device 1000 and peripheral devices. It can also be used to connect headphones for audio playback. This interface can also be used to connect other electronic devices 1000, such as AR devices.

[0114] It is understood that the interface connection relationships between the modules illustrated in the embodiments of this application are merely illustrative and do not constitute a structural limitation on the electronic device 1000. In other embodiments of this application, the electronic device 1000 may also employ different interface connection methods or combinations of multiple interface connection methods as described in the above embodiments.

[0115] The charging management module receives charging input from a charger, which can be either a wireless charger or a wired charger. In some wired charging embodiments, the charging management module receives charging input from the wired charger via a USB interface. In some wireless charging embodiments, the charging management module receives wireless charging input via the wireless charging coil of the electronic device 1000. While charging the battery, the charging management module can also supply power to the electronic device 1000 via the power management module.

[0116] The power management module connects the battery, charging management module, and processor. It receives input from the battery and / or charging management module to power the processor, internal memory, screen, camera, wireless communication module, etc. The power management module can also monitor parameters such as battery capacity, battery cycle count, and battery health status (leakage current, impedance). In some other embodiments, the power management module may be located within the processor. In still other embodiments, the power management module and charging management module may be located in the same device.

[0117] Electronic device 1000 can realize audio functions, such as music playback and recording, through an audio module, a first sound-generating device 500, a second sound-generating device 600, a microphone, and an application processor.

[0118] The audio module is used to convert digital audio information into analog audio signals for output, and also to convert analog audio input into digital audio signals. The audio module can also be used for encoding and decoding audio signals. In some embodiments, the audio module may be located within the processor, or some functional modules of the audio module may be located within the processor.

[0119] The first sound-generating device 500 and the second sound-generating device 600 can be used to convert audio electrical signals into sound signals. The electronic device 1000 can listen to music or make phone calls through the first sound-generating device 500 and the second sound-generating device 600.

[0120] A microphone, also known as a "voice transducer," is used to convert sound signals into electrical signals. When making a phone call or sending a voice message, the user speaks by bringing their mouth close to the microphone, inputting the sound signal into the microphone. Electronic device 1000 may be equipped with at least one microphone. In some embodiments, electronic device 1000 may be equipped with two microphones, which, in addition to collecting sound signals, can also perform noise reduction. In other embodiments, electronic device 1000 may be equipped with three, four, or more microphones, enabling sound signal collection, noise reduction, sound source identification, and directional recording, among other functions.

[0121] The sensor module may include one or more of the following: pressure sensor, gyroscope sensor, barometric pressure sensor, magnetic sensor, accelerometer, distance sensor, proximity sensor, fingerprint sensor, temperature sensor, touch sensor, ambient light sensor, and bone conduction sensor.

[0122] Understandably, designers can mount different electronic components on the first housing 100 or the second housing 200 as needed. For example, a battery, antenna, charging management module, camera module, processor, and audio module can be mounted on the first housing 100 and electrically connected to the first motherboard 410. Internal memory and microphone can be mounted on the second housing 200 and electrically connected to the second motherboard 420. Exemplarily, the electronic components and the first motherboard 410 or the electronic components and the second motherboard 420 can be electrically connected via a flexible circuit board.

[0123] It is understood that the number of electronic devices of a certain type is not limited to one; the number of electronic devices can be one or more as needed. For example, there can be two processors: one processor is mounted on a first motherboard and electrically connected to the electronic devices on the first housing 100; the other processor is mounted on a second motherboard and electrically connected to the electronic devices on the second housing 200. In this way, the two processors can be used to process the work of the devices on the first housing 100 and the second housing 200 respectively, reducing cross-axis signal transmission.

[0124] Figure 4 yes Figure 1 The diagram shows a partial structural view of the electronic device 1000 in a closed state from another angle. Figure 5 yes Figure 1 The diagram shows a partial structural view of the electronic device 1000 in its open state from another angle.

[0125] like Figure 4 and Figure 5 As shown, the top end face of the first housing 100 is the first top surface 102, and the top end face of the second housing 200 is the second top surface 202. The top end face of the first housing 100 is the end face of the first housing 100 that is furthest from the ground when the user uses the electronic device 1000. The top end face of the second housing 200 is the end face of the second housing 200 that is furthest from the ground when the user uses the electronic device 1000.

[0126] Exemplarily, the first housing 100 may include a first front surface 103 and a first back surface 104 disposed opposite to each other. The second housing 200 may include a second front surface 203 and a second back surface 204 disposed opposite to each other. When the electronic device 1000 is in a closed state, the first housing 100 and the second housing 200 are disposed opposite to each other in a first direction. The first front surface 103 faces the second housing 200, and the first back surface 104 is located on the side of the first front surface 103 away from the second front surface 203. The first back surface 104 and the second back surface 204 are the outer surfaces of the electronic device 1000, and the first back surface 104 and the second back surface 204 face the outside of the electronic device 1000. An internal screen 310 may be mounted on the first front surface 103 of the first housing 100 and the second front surface 203 of the second housing 200. An external screen 320 may be mounted on the first back surface 104.

[0127] For example, a first top surface 102 is connected between a first front surface 103 and a first back surface 104. A second top surface 202 is connected between a second front surface 203 and a second back surface 204.

[0128] Figure 6a yes Figure 3 The diagram shows a structural schematic of one embodiment of the first sound-generating device 500 and the second sound-generating device 600 shown.

[0129] like Figures 3 to 6a As shown, the first sound-generating device 500 can be installed in the first receiving space 101 of the first housing 100, and the second sound-generating device 600 can be installed in the second receiving space 201 of the second housing 200.

[0130] In some embodiments, the first housing 100 is provided with a first sound outlet 105 and a second sound outlet 106 spaced apart. The first sound outlet 105 can connect the interior of the first housing 100 to the external environment. The second sound outlet 106 can connect the interior of the first housing 100 to the external environment. For example, the first sound outlet 105 can connect the first receiving space 101 of the first housing 100 to the external environment. The second sound outlet 106 can connect the first receiving space 101 of the first housing 100 to the external environment.

[0131] In some embodiments, the first sound-generating device 500 includes a first diaphragm 520 and a second diaphragm 530. The sound emitted by the vibration of the first diaphragm 520 can be transmitted through a first sound outlet 105, and the sound emitted by the vibration of the second diaphragm 530 can be transmitted through a second sound outlet 106. It is understood that there can be various arrangements of the first diaphragm 520 and the second diaphragm 530 in the first sound-generating device 500; several are listed below for reference:

[0132] In some embodiments, the first sound-generating device 500 may include two single-diaphragm loudspeakers (e.g., Figure 6a (As shown). The first diaphragm 520 can be the diaphragm of one of the single-diaphragm loudspeakers, and the second diaphragm 530 can be the diaphragm of another single-diaphragm loudspeaker. Exemplarily, one single-diaphragm loudspeaker includes a first housing 511 and a first diaphragm 520. The other single-diaphragm loudspeaker may include a second housing 512 and a second diaphragm 530. The first diaphragm 520 and the first housing 511 may enclose a first acoustic cavity (not shown), which may be connected to a first sound outlet 105. The second diaphragm 530 and the second housing 512 may enclose a second acoustic cavity (not shown), which may be connected to a second sound outlet 106.

[0133] It is understandable that the first acoustic cavity can be directly connected to the first sound outlet 105, or indirectly connected to the first sound outlet 105. The second acoustic cavity can be directly connected to the second sound outlet 106, or indirectly connected to the second sound outlet 106.

[0134] In some embodiments, the first sound-generating device 500 may further include a first acoustic conduit 540 and a second acoustic conduit 550. One end of the first acoustic conduit 540 is connected to a first acoustic cavity, and the other end is connected to a first sound outlet 105. The first acoustic cavity can be connected to the first sound outlet 105 through the first acoustic conduit 540. One end of the second acoustic conduit 550 is connected to a second acoustic cavity, and the other end is connected to a second sound outlet 106. The second acoustic cavity can be connected to the second sound outlet 106 through the second acoustic conduit 550. It is understood that by providing the first acoustic conduit 540 and the second acoustic conduit 550, the first acoustic cavity can be indirectly connected to the first sound outlet 105, and the second acoustic cavity can be indirectly connected to the second sound outlet 106. The positions of the first diaphragm and the first acoustic cavity on the first housing 100 can be adaptively adjusted according to the internal components of the first housing 100, and there is no requirement that they must be located near the first sound outlet 105. Similarly, the positions of the second diaphragm and the second acoustic cavity on the first housing 100 can be adaptively adjusted according to the internal components of the first housing 100, and there is no requirement that they must be located near the second sound outlet 106. Only by adjusting the length and shape of the first acoustic conduit 540 and the second acoustic conduit 550 can the sound from the first acoustic cavity and the second acoustic cavity be transmitted to the first sound outlet 105 and the second sound outlet 106. For example, the first acoustic conduit 540 and the second acoustic conduit 550 can each be part of two single-diaphragm loudspeakers.

[0135] In other embodiments, the first sound-generating device 500 may also not include the first acoustic conduit 540 and / or the second acoustic conduit 550.

[0136] In some embodiments, the first sound-generating device 500 may also be a dual-diaphragm loudspeaker. The first diaphragm 520 and the second diaphragm 530 may be the two diaphragms of the dual-diaphragm loudspeaker. Exemplarily, the dual-diaphragm loudspeaker may include the first diaphragm 520, the second diaphragm 530, and a housing. The first diaphragm 520, the second diaphragm 530, and the housing enclose a first acoustic cavity and a second acoustic cavity, which are not in communication.

[0137] In some embodiments, the dual-diaphragm loudspeaker can be a counter-rotating dual-diaphragm loudspeaker, that is, the first diaphragm 520 and the second diaphragm 530 are arranged along the thickness direction of the first diaphragm 520. Alternatively, the dual-diaphragm loudspeaker can also be a transverse dual-diaphragm loudspeaker, that is, the first diaphragm 520 and the second diaphragm 530 are arranged along the length direction of the first diaphragm 520.

[0138] In other embodiments, the housing of the first sound-generating device 500 can reuse the internal components of the electronic device 1000, such as the mid-frame, circuit board, etc. of the electronic device 1000. That is, the first diaphragm 520 can form a first acoustic cavity with the internal structural components of the electronic device 1000. The housing of the first sound-generating device 500 can also be a separately manufactured and assembled structural component. This application does not impose any restrictions.

[0139] In other embodiments, the first sound-generating device 500 may also be a single-diaphragm loudspeaker, with the diaphragm and the first housing 511 enclosing a first acoustic cavity and a second acoustic cavity, which are located on opposite sides of the diaphragm. That is, one of the first acoustic cavity and the second acoustic cavity serves as the front cavity of the single-diaphragm loudspeaker, and the other as the rear cavity. One of the first sound outlet 105 and the second sound outlet 106 connects to the front cavity, and the other connects to the rear cavity.

[0140] For example, the first sound outlet 105 and the second sound outlet 106 are spaced apart and not connected to each other. The vibration of the first diaphragm 520 can cause the air inside the first acoustic cavity to vibrate, emitting sound that propagates through the first sound outlet 105 to the external environment and can be heard by the user. The vibration of the second diaphragm 530, in turn, causes the air inside the second acoustic cavity to vibrate, emitting sound that propagates through the second sound outlet 106 to the external environment and can be heard by the user.

[0141] It is understood that the first diaphragm 520 can include two vibration directions: forward vibration and reverse vibration. When the first diaphragm 520 vibrates forward, it compresses air, and the gas is discharged from the electronic device 1000 through the first sound outlet 105. When the first diaphragm 520 vibrates reverse, it draws in gas outside the electronic device 1000 through the first sound outlet 105. The vibration direction of the second diaphragm 530 can be defined with reference to the vibration direction of the first diaphragm 520. The diaphragm vibration directions in this application are all relative vibration directions as defined above, rather than absolute vibration directions in space (i.e., the vibration displacement direction of the diaphragm).

[0142] For example, the first sound outlet 105 may be circular or elongated. Alternatively, the first sound outlet 105 may include a plurality of spaced-apart sub-outlets, which may be circular or elongated. Alternatively, the first sound outlet 105 may include a plurality of spaced-apart sub-outlets of different shapes, for example, some sub-outlets are circular and some are elongated.

[0143] For example, the second sound outlet 106 may be circular or elongated. Alternatively, the second sound outlet 106 may include a plurality of spaced-apart sub-outlets, which may be circular or elongated. Alternatively, the second sound outlet 106 may include a plurality of spaced-apart sub-outlets of different shapes, for example, some sub-outlets are circular and some are elongated.

[0144] It is understood that the shape of the first sound outlet 105 and the shape of the second sound outlet 106 can be the same or different. For example, both first sound outlets 105 can be circular; or both first sound outlets 105 can be elongated; or one of the two first sound outlets 105 can be circular and the other elongated. It is understood that the shape of the first sound outlet 105 and the shape of the second sound outlet 106 are not limited to the examples given above. Those skilled in the art can design according to their needs, and this application does not limit the shape of the first sound outlet 105 and the shape of the second sound outlet 106. The shape of the end where the first acoustic duct connects to the first sound outlet 105 can be adjusted according to the shape of the first sound outlet 105, and the shape of the end where the second acoustic duct connects to the second sound outlet 106 can be adjusted according to the shape of the second sound outlet 106.

[0145] In some embodiments, the first sound outlet 105 and the second sound outlet 106 may both be located on the top of the first housing 100. This allows the user to hold the electronic device 1000 by its bottom and bring the top of the first housing 100 close to their ear, resulting in a closer proximity of the first sound outlet 105 and the second sound outlet 106 to the user's ear, thus increasing the perceived loudness of the sound. For example, the first sound outlet 105 may be located on the first top surface 102 or the first back surface 104 of the first housing 100, near the first top surface 102. The second sound outlet 106 may also be located on the first top surface 102 or the first back surface 104 of the first housing 100, near the first top surface 102. It is understood that the first sound outlet 105 and the second sound outlet 106 may both be located on the first top surface 102 or the first back surface 104, or one may be located on the first top surface 102 and the other on the first back surface 104.

[0146] In some embodiments, the second housing 200 is provided with a third sound outlet 205 and a fourth sound outlet 206 spaced apart. The third sound outlet 205 can connect the interior of the second housing 200 to the external environment. The fourth sound outlet 206 can connect the interior of the second housing 200 to the external environment. For example, the third sound outlet 205 can connect the second receiving space 201 of the second housing 200 to the external environment. The fourth sound outlet 206 can connect the second receiving space 201 of the second housing 200 to the external environment.

[0147] In some embodiments, the second sound-generating device 600 may include a third diaphragm 620 and a fourth diaphragm 630. The sound emitted by the vibration of the third diaphragm 620 can be transmitted to the external environment through a third sound outlet 205. The sound emitted by the vibration of the fourth diaphragm 630 can be transmitted to the external environment through a fourth sound outlet 206. It is understood that the vibration directions of both the third diaphragm 620 and the fourth diaphragm 630 can be defined with reference to the vibration direction of the first diaphragm 520.

[0148] It is understandable that the second sound-emitting device 600 can be configured with reference to the first sound-emitting device 500. The speaker types of the second sound-emitting device 600 and the first sound-emitting device 500 can be the same or different. For example, both the first sound-emitting device 500 and the second sound-emitting device 600 can be two single-diaphragm speakers (such as...). Figure 6a (as shown); or, one of the first sound-generating device 500 and the second sound-generating device 600 can be two single-diaphragm loudspeakers, and the other can be a double-diaphragm loudspeaker; or, both the first sound-generating device 500 and the second sound-generating device 600 can be opposing double-diaphragm loudspeakers; or, both the first sound-generating device 500 and the second sound-generating device 600 can be transverse double-diaphragm loudspeakers; or, one of the first sound-generating device 500 and the second sound-generating device 600 can be a transverse double-diaphragm loudspeaker, and the other can be an opposing double-diaphragm loudspeaker.

[0149] For example, the second sound-generating device 600 and the first sound-generating device 500 may have the same speaker type. The second sound-generating device 600 may include two single-diaphragm speakers. One single-diaphragm speaker includes a third housing 611 and a third diaphragm 620. The other single-diaphragm speaker may include a fourth housing 612 and a fourth diaphragm 630. The third diaphragm 620 and the third housing 611 may enclose a third acoustic cavity (not shown), which may be connected to a third sound outlet 205. The fourth diaphragm 630 and the fourth housing 612 may enclose a fourth acoustic cavity (not shown), which may be connected to a fourth sound outlet 206. The second sound-generating device 600 may also include a third acoustic conduit 640 and a fourth acoustic conduit 650.

[0150] It is understandable that the arrangement of the third housing 611, the fourth housing 612, the third diaphragm 620, the fourth diaphragm 630, the third acoustic duct 640, and the fourth acoustic duct 650 of the second sound-generating device 600 can refer to the arrangement of the first housing 511, the second housing 512, the first diaphragm 520, the second diaphragm 530, the first acoustic duct 540, and the second acoustic duct 550 of the first sound-generating device 500 described above.

[0151] In some embodiments, the third sound outlet 205 may be circular or elongated. Alternatively, the third sound outlet 205 may include a plurality of spaced-apart sub-outlets, which may be circular or elongated. Alternatively, the third sound outlet 205 may include a plurality of spaced-apart sub-outlets of different shapes, for example, some sub-outlets are circular and some are elongated.

[0152] In some embodiments, the fourth sound outlet 206 may be circular or elongated. Alternatively, the fourth sound outlet 206 may include a plurality of spaced-apart sub-outlets, which may be circular or elongated. Alternatively, the fourth sound outlet 206 may include a plurality of spaced-apart sub-outlets of different shapes. For example, some sub-outlets may be circular, and some may be elongated.

[0153] It is understood that the shape of the fourth sound outlet 206 may be the same as or different from the shape of the third sound outlet 205. For example, both the third sound outlet 205 and the fourth sound outlet 206 may be circular or elongated; or, a portion of the third sound outlet 205 and the fourth sound outlet 206 may be circular, and a portion may be elongated. The shapes of the third sound outlet 205 and the fourth sound outlet 206 can be designed according to requirements, and this application does not impose any restrictions on them.

[0154] In some embodiments, the third sound outlet 205 and the fourth sound outlet 206 may be located on the top of the second housing 200. This allows the user to hold the electronic device 1000 by its bottom and bring the top of the second housing 200 close to their ear, making the third sound outlet 205 and the fourth sound outlet 206 closer to the user's ear, resulting in a louder sound. For example, the third sound outlet 205 may be located on the second top surface 202 or the second back surface 204 of the second housing 200, near the second top surface 202. The fourth sound outlet 206 may also be located on the second top surface 202 or the second back surface 204 of the second housing 200, near the second top surface 202. It is understood that the third sound outlet 205 and the fourth sound outlet 206 may both be located on the second top surface 202 or the second back surface 204, or one may be located on the second top surface 202 and the other on the second back surface 204.

[0155] It is understood that the vibration direction of the first diaphragm 520 and the vibration direction of the second diaphragm 530 can be the same, so that the sound phase of the first sound outlet 105 and the sound phase of the second sound outlet 106 are the same; or the vibration direction of the first diaphragm 520 and the vibration direction of the second diaphragm 530 can be opposite, so that the sound phase of the first sound outlet 105 and the sound phase of the second sound outlet 106 are opposite. The vibration direction of the third diaphragm 620 and the vibration direction of the fourth diaphragm 630 can be the same, so that the sound phase of the third sound outlet 205 and the sound phase of the fourth sound outlet 206 are the same; or the vibration direction of the third diaphragm 620 and the vibration direction of the fourth diaphragm 630 can be opposite, so that the sound phase of the third sound outlet 205 and the sound phase of the fourth sound outlet 206 are opposite. By controlling the vibration direction of the first diaphragm 520, the second diaphragm 530, the third diaphragm 620, and the fourth diaphragm 630, the sound phase of the first sound outlet 105, the sound phase of the second sound outlet 106, the sound phase of the third sound outlet 205, and the sound phase of the fourth sound outlet 206 can be controlled, allowing the electronic device 1000 to switch between anti-leakage mode (receiver mode, also known as RCV mode) and external playback mode (speaker mode, also known as SKP mode).

[0156] Figure 6b This is a schematic diagram of one embodiment of the vibration displacement of the first diaphragm 520 and the second diaphragm 530 over time. Figure 6b In the diagram, the horizontal axis represents time, and the vertical axis represents the vibration displacement of the first diaphragm 520 and the second diaphragm 530. The sign of the vertical axis indicates the vibration direction of the first diaphragm 520 and the second diaphragm 530. The absolute value of the value represents the displacement distance of the first diaphragm 520 and the second diaphragm 530 relative to their initial position (when no power is applied). When the vertical axis is positive, the first diaphragm 520 and the second diaphragm 530 vibrate in the positive direction; when the vertical axis is negative, the first diaphragm 520 and the second diaphragm 530 vibrate in the opposite direction.

[0157] like Figure 6b As shown, the first diaphragm 520 and the second diaphragm 530 vibrate periodically over time. The vibration periods of the first diaphragm 520 and the second diaphragm 530 are the same.

[0158] It is understandable that the vibration direction of the first diaphragm 520 is opposite to that of the second diaphragm 530, but not absolutely opposite. That is, the phase difference between the vibration phase (A) of the first diaphragm 520 and the vibration phase (B) of the second diaphragm 530 is not limited to 180° (half a vibration cycle). For example, the opposite vibration direction of the first diaphragm 520 and the second diaphragm 530 can mean that at the same moment, the vibration phase (A) of the first diaphragm 520 and the vibration phase (B) of the second diaphragm 530 are A+90°≤B≤A+270°. 90° refers to one-quarter of the vibration cycle length, and 270° refers to three-quarters of the vibration cycle length.

[0159] Similarly, since the phase difference between the vibration phase (A) of the first diaphragm 520 and the vibration phase (B) of the second diaphragm 530 is not limited to 180°, the phase difference between the sound phase of the first sound outlet 105 and the sound phase of the second sound outlet 106 is also not limited to 180°. The sound phase of the first sound outlet 105 can change according to the vibration phase of the first diaphragm 520. The sound phase of the second sound outlet 106 can change according to the vibration phase of the second diaphragm 530.

[0160] It is understandable that while the vibration directions of the first diaphragm 520 and the second diaphragm 530 are the same, they are not absolutely identical. That is, at the same moment, the vibration phase (A) of the first diaphragm 520 and the vibration phase (B) of the second diaphragm 530 can have a certain range of phase difference. For example, the same vibration direction of the first diaphragm 520 and the second diaphragm 530 can mean that at the same moment, the vibration phase (A) of the first diaphragm 520 and the vibration phase (B) of the second diaphragm 530 are such that A-90° < B < A+90°.

[0161] Furthermore, all descriptions of the vibration direction relationship between the two diaphragms in this application can be referenced to the above description of the vibration direction relationship between the first diaphragm 520 and the second diaphragm 530, and will not be repeated here.

[0162] Understandably, when a user needs to play audio using electronic device 1000, the user can choose whether electronic device 1000 is in anti-leakage mode or speaker mode depending on the scenario. For example, scenario types can include walking, running, quiet, multi-person conversation, coffee shop, subway, train, car, waiting room, conversation, office, outdoor, driving, strong wind, airplane, alarm sound, horn sound, crying sound, etc. For instance, when a user needs to answer a phone call and does not want the conversation to be heard by those around them, electronic device 1000 can be in anti-leakage mode. When the user needs to play sound aloud, such as music, electronic device 1000 can be in speaker mode (SKP mode).

[0163] The following describes a specific implementation method for controlling the sound phase of the first sound outlet 105, the second sound outlet 106, the third sound outlet 205, and the fourth sound outlet 206 by controlling the vibration direction of the first diaphragm 520, the second diaphragm 530, the third diaphragm 620, and the fourth diaphragm 630, so that the electronic device 1000 can switch between a leak-proof mode (receiver mode, also known as RCV mode) and a speaker mode (speaker mode, also known as SKP mode).

[0164] Combination Figure 4 and Figure 5 In some embodiments, when the electronic device 1000 is in a closed state, the first housing 100 and the second housing 200 are disposed opposite each other in a first direction, which is the thickness direction of the electronic device 1000. The line connecting the first sound outlet 105 and the third sound outlet 205 is the first connecting line L1, and the line connecting the second sound outlet 106 and the fourth sound outlet 206 is the second connecting line L2. The first connecting line L1 and the second connecting line L2 are intersecting. It should be noted that the intersecting arrangement here means that the projection of the first connecting line L1 onto a reference plane and the projection of the second connecting line L2 onto a reference plane intersect. The reference plane can be any plane. Spatially, the first connecting line L1 and the second connecting line L2 may or may not intersect. For example, the line connecting the center of the first sound outlet 105 and the center of the second sound outlet 106 forms the first connecting line L1. The line connecting the center of the second sound outlet 106 and the center of the fourth sound outlet 206 forms the second connecting line L2.

[0165] For example, when the electronic device 1000 is in the sound leakage prevention mode, it can be closed, with the vibration direction of the first diaphragm 520 opposite to that of the second diaphragm 530, allowing the first sound outlet 105 and the second sound outlet 106 to transmit sound waves with opposite phases; the vibration direction of the third diaphragm 620 is opposite to that of the fourth diaphragm 630, allowing the third sound outlet 205 and the fourth sound outlet 206 to transmit sound waves with opposite phases; the vibration direction of the first diaphragm 520 is the same as that of the third diaphragm 620, allowing the first sound outlet 105 and the third sound outlet 205 to transmit sound waves with the same phase. Thus, the sound waves transmitted from the first sound outlet 105, the second sound outlet 106, the third sound outlet 205, and the fourth sound outlet 206 can form an acoustic quadrupole in space. Understandably, compared to dipoles, acoustic quadrupoles can more effectively reduce far-field sound leakage, effectively improve call privacy, and have good privacy protection functions.

[0166] For example, when the electronic device 1000 is in the open state, the vibration direction of the first diaphragm 520 is opposite to that of the second diaphragm 530. The first sound outlet 105 and the second sound outlet 106 can transmit sound waves with opposite phases, and the sound waves transmitted from the first sound outlet 105 and the second sound outlet 106 can form an acoustic dipole in space. The vibration direction of the third diaphragm 620 is opposite to that of the fourth diaphragm 630. The third sound outlet 205 and the fourth sound outlet 206 can transmit sound waves with opposite phases, and the sound waves transmitted from the third sound outlet 205 and the fourth sound outlet 206 can form an acoustic dipole in space. At this time, the first sound-emitting device 500 and the second sound-emitting device 600 of the electronic device 1000 can also have a certain effect of reducing far-field sound leakage.

[0167] For example, when the electronic device 1000 is in external speaker mode, it can be either open or closed. In this case, the vibration directions of the first diaphragm 520, the second diaphragm 530, the third diaphragm 620, and the fourth diaphragm 630 can be the same, and the sound phases of the first sound outlet 105, the second sound outlet 106, the third sound outlet 205, and the fourth sound outlet 206 can be the same. Therefore, the four sound waves can be superimposed to provide sufficient sound loudness and higher sound quality.

[0168] In some embodiments, when the electronic device 1000 is in the anti-leakage mode, the vibration phases of the first diaphragm 520, the second diaphragm 530, the third diaphragm 620, and the fourth diaphragm 630 can be adjusted. The vibration phases of the first diaphragm 520 and the third diaphragm 620 have a difference, and the vibration phases of the second diaphragm 530 and the fourth diaphragm 630 have a difference, so that the electronic device 1000 has a better noise reduction effect in a certain direction.

[0169] In some implementations, when the electronic device 1000 is in the anti-leakage mode, the vibration direction of the first diaphragm 520 and the vibration direction of the third diaphragm 620 may be different at the same time, and the electronic device 1000 may also achieve quadrupole noise reduction.

[0170] In some embodiments, the angle between the central axis of the first sound outlet 105 and the central axis of the second sound outlet 106 may be less than or equal to 10°. The central axis of the first sound outlet 105 is perpendicular to the plane containing the first sound outlet 105 and passes through the center of the first sound outlet 105. The central axis of the second sound outlet 106 is perpendicular to the plane containing the second sound outlet 106 and passes through the center of the second sound outlet 106. The central axis of the first sound outlet 105 and the central axis of the second sound outlet 106 may or may not intersect in space. This allows the angle between the direction of the central axis of the first sound outlet 105 and the direction of the central axis of the second sound outlet 106 to be less than or equal to 10°. This makes the orientation of the first sound outlet 105 and the second sound outlet 106 approximately the same, resulting in more uniform sound transmission from both outlets in all directions within a plane parallel to the first sound outlet 105 (or the second sound outlet 106), reducing the risk of louder sound in one direction within that plane. In other embodiments, the angle between the direction of the central axis of the first sound outlet 105 and the direction of the central axis of the second sound outlet 106 may also be less than or equal to 8°, 5°, 3°, or 1°.

[0171] In some embodiments, the first sound outlet 105 and the second sound outlet 106 may both be located on the first back surface 104 of the first housing 100. It is understood that when a user plays audio using the anti-leakage mode of the electronic device 1000, the first back surface 104 of the electronic device 1000 can be directed towards the user's ear. Compared to the scheme where the first sound outlet 105 and the second sound outlet 106 are located on the first top surface 102 of the first housing 100, in this embodiment, the first sound outlet 105 and the second sound outlet 106 are located on the first back surface 104. Since the first sound outlet 105 and the second sound outlet 106 are closer to the user's ear, the sound propagation direction of the first sound outlet 105 and the second sound outlet 106 is towards the side where the user's ear is located, resulting in a louder sound and improved user experience.

[0172] In some embodiments, the first sound outlet 105 faces the side away from the first front face 103 of the first housing 100. The second sound outlet 106 faces the side of the first housing 100 away from the first front face 103. It is understood that when a user plays audio using the anti-leakage mode of the electronic device 1000, the orientation of the first sound outlet 105 and the second sound outlet 106 is approximately perpendicular to the user's ears. This allows more sound from the first sound outlet 105 and the second sound outlet 106 to be received by the user's ears, resulting in a louder sound and improved user experience.

[0173] In some embodiments, the first sound outlet 105, the second sound outlet 106, and the external screen 320 of the electronic device 1000 can be on the same side of the first housing 100. For example, the first sound outlet 105, the second sound outlet, and the external screen 320 of the electronic device 1000 can all be located on the first back surface 104 of the first housing 100. In this way, when the electronic device 1000 is in a folded state, the sound waves emitted from the first sound outlet 105 and the second sound outlet 106 can propagate towards the user, resulting in a louder sound for the user and improving the user experience.

[0174] In some embodiments, when the electronic device 1000 is in the open state, the first housing 100 and the second housing 200 are arranged side by side along a second direction, with the first direction and the second direction forming an angle. The line connecting the first sound outlet 105 and the second sound outlet 106 is a third line L3. The angle between the third line L3 and the second direction can be acute (e.g., 60°, 45°, 20°, 10°, etc.), or the third line L3 can be parallel to the second direction. The third line L3 is formed by connecting the center of the first sound outlet 105 and the center of the second sound outlet 106. It is understandable that, compared to the scheme in which the first sound outlet 105 and the second sound outlet 106 are arranged along the thickness direction of the electronic device 1000, in this embodiment, the first sound outlet 105 and the second sound outlet 106 can be arranged along the second direction, that is, the first sound outlet 105 and the second sound outlet 106 are arranged along the length direction of the electronic device 1000. The first sound outlet 105 and the second sound outlet 106 are less restricted, so the first sound outlet 105 and the second sound outlet 106 can be designed to be larger.

[0175] In some embodiments, the first sound outlet 105 and the second sound outlet 106 can be symmetrical about the axis W1 of the first housing 100, which is parallel to the bending axis of the electronic device 1000. Thus, when a user plays audio using the anti-leakage mode of the electronic device 1000, regardless of whether the user holds the electronic device 1000 in their left or right hand, the distance between the first sound outlet 105 and the second sound outlet 106 and the user's ear is approximately the same in the second direction. This prevents the first sound outlet 105 or the second sound outlet 106 from being closer to the user's ear when on the left or right side, thus avoiding a situation where the sound is louder when the user is on the left or right side. Users do not need to distinguish between left and right hands when using the electronic device 1000, which improves the user experience.

[0176] In some embodiments, the first sound outlet 105 and the second sound outlet 106 may be located at the same height. This means that, in the height direction (X-axis direction) of the electronic device 1000, the distances from the first sound outlet 105 and the second sound outlet 106 to the first top surface are approximately the same. Thus, when a user plays audio using the anti-leakage mode of the electronic device 1000, the approximately equal distances between the first sound outlet 105 and the second sound outlet 106 in the height direction of the electronic device 1000 result in a more uniform sound for the user.

[0177] In some embodiments, the angle between the central axis of the third sound outlet 205 and the central axis of the fourth sound outlet 206 may be less than or equal to 10°. The central axis of the third sound outlet 205 is perpendicular to the plane containing it and passes through its center. The central axis of the fourth sound outlet 206 is perpendicular to the plane containing it and passes through its center. This ensures that the orientations of the third and fourth sound outlets are approximately the same, resulting in more uniform sound transmission from both outlets in all directions within a plane parallel to the third (or fourth) sound outlet 205 (or fourth 206), reducing the risk of louder sound in one direction. In other embodiments, the angle between the central axis of the third and fourth sound outlets may be less than or equal to 8°, 5°, 3°, or 1°.

[0178] In some embodiments, the line connecting the third sound outlet 205 and the fourth sound outlet 206 is a fourth connecting line L4, and the angle between the fourth connecting line L4 and the second direction is an acute angle (e.g., 60°, 45°, 20°, 10°, etc.), or the fourth connecting line L4 is parallel to the second direction. The center of the third sound outlet 205 and the center of the fourth sound outlet 206 are connected to form the fourth connecting line L4. It is understood that, compared to a scheme where the third sound outlet 205 and the fourth sound outlet 206 are arranged along the thickness direction of the electronic device 1000, in this embodiment, the third sound outlet 205 and the fourth sound outlet 206 can be arranged along the second direction, that is, along the length direction of the electronic device 1000. The third sound outlet 205 and the fourth sound outlet 206 are less restricted, and therefore can be designed to be larger.

[0179] In some implementations, the third line L3 and the fourth line L4 are parallel. Due to manufacturing tolerances, the angle between the first line L1 and the second line L2 can also be 175°, 178°, 183°, etc. In this way, compared to a scheme where the two lines are not parallel, the quadrupole sound field formed by the four sound outlets in the plane formed by the third line L3 and the fourth line L4 provides a more uniform sound leakage prevention effect in all directions.

[0180] In some embodiments, the third sound outlet 205 and the fourth sound outlet 206 can be symmetrical about the axis W2 of the second housing 200, which is parallel to the bending axis of the electronic device 1000. Thus, when a user plays audio using the anti-leakage mode of the electronic device 1000, regardless of whether the user holds the electronic device 1000 in their left or right hand, the positions of the third sound outlet 205 and the fourth sound outlet 206 relative to the user's ear are approximately the same in the second direction, preventing one side from being closer to the user's ear and resulting in a louder sound. Users do not need to distinguish between left and right hands when using the anti-leakage mode of the electronic device 1000, which improves the user experience.

[0181] In some embodiments, the third sound outlet 205 and the fourth sound outlet 206 can both be located on the second top surface 202. This allows the third sound outlet 205 and the fourth sound outlet 206 to be situated on the top of the second housing 200. When using the electronic device 1000, the user can hold the device by its bottom and bring the top of the second housing 200 close to their ear. With the third sound outlet 205 and the fourth sound outlet 206 closer to the user's ear, the user can hear a louder sound.

[0182] In some embodiments, the third sound outlet 205 and the fourth sound outlet 206 may be located at the same height. This means that, in the height direction (X-axis direction) of the electronic device 1000, the distance between the third sound outlet 205 and the fourth sound outlet 206 and the second top surface is approximately the same. Thus, when the user plays audio using the anti-leakage mode of the electronic device 1000, the approximately equal distance between the third sound outlet 205 and the fourth sound outlet 206 in the height direction of the electronic device 1000 results in a more uniform sound for the user.

[0183] In some embodiments, the electronic device 1000 may further include a first driver, a second driver, a third driver, and a fourth driver (not shown). The first driver and the second driver may both be mounted in the first housing 100. The third driver and the fourth driver may both be mounted in the second housing 200. The first driver is used to provide a first drive signal to vibrate the first diaphragm 520, the second driver is used to provide a second drive signal to vibrate the second diaphragm 530, the third driver is used to provide a third drive signal to vibrate the third diaphragm 620, and the fourth driver is used to provide a fourth drive signal to vibrate the fourth diaphragm 630.

[0184] For example, when the electronic device 1000 is in the anti-leakage mode, the phases of the first driving signal and the second driving signal can be opposite, so that the vibration directions of the first diaphragm 520 and the second diaphragm 530 are opposite. The phases of the third driving signal and the fourth driving signal can be opposite, so that the vibration directions of the third diaphragm 620 and the fourth diaphragm 630 are opposite. The phases of the first driving signal and the third driving signal can be the same, so that the vibration directions of the first diaphragm 520 and the third diaphragm 620 are the same. When the electronic device 1000 is in the external speaker mode, the phases of the first driving signal, the second driving signal, the third driving signal, and the fourth driving signal can be the same. It is understood that the vibration phase of the diaphragm changes according to the phase of the driving signal. When the phases of the first driving signal and the second driving signal are adjusted accordingly to have a phase difference, a phase difference can be made between the vibration phase (A) of the first diaphragm 520 and the vibration phase (B) of the second diaphragm 530.

[0185] Exemplarily, the first driver, second driver, third driver, and fourth driver may be part of an audio module. Exemplarily, the first driver and second driver may be disposed on a first motherboard. The first driver and second driver may be integrated into one chip or may be integrated into two separate chips; this application is not limited thereto. The third driver and fourth driver may be disposed on a second motherboard. The third driver and fourth driver may be integrated into one chip or may be integrated into two separate chips; this application is not limited thereto.

[0186] Understandably, the first sound-generating device 500 can be electrically connected to the first motherboard, and the first and second drive signals can be transmitted to the first sound-generating device 500 respectively through the first motherboard. Similarly, the second sound-generating device 600 can be electrically connected to the second motherboard, and the third and fourth drive signals can be transmitted to the second sound-generating device 600 respectively through the second motherboard. In this way, the drive signals of the first and second sound-generating devices 500 do not need to pass through the rotating shaft, simplifying the electrical signal transmission path. Furthermore, the vibrations of the first diaphragm 520, second diaphragm 530, third diaphragm 620, and fourth diaphragm 630 are controlled by four independent drivers, making them less susceptible to interference and resulting in more stable drive signals. This facilitates achieving symmetry in the vibration of the four diaphragms, leading to better sound leakage prevention in the electronic device 1000. Furthermore, the vibration of the first diaphragm 520, the second diaphragm 530, the third diaphragm 620, and the fourth diaphragm 630 is controlled by four independent drivers, and the vibration direction of the four diaphragms can be independently controlled. For example, when the electronic device 1000 is in the sound leakage prevention mode, the first diaphragm 520 and the third diaphragm 620 can vibrate in the forward direction, while the second diaphragm 530 and the fourth diaphragm 630 can vibrate in the reverse direction; or, when the electronic device 1000 is in the sound leakage prevention mode, the first diaphragm 520 and the third diaphragm 620 can vibrate in the reverse direction, while the second diaphragm 530 and the fourth diaphragm 630 can vibrate in the forward direction.

[0187] In some embodiments, taking both the first sound-generating device 500 and the second sound-generating device 600 as examples of moving-coil loudspeakers, the first driver, second driver, third driver, and fourth driver are described to cause the first diaphragm 520, the second diaphragm 530, the third diaphragm 620, and the fourth diaphragm 630 to vibrate. The first sound-generating device 500 may include a first voice coil (not shown) and a second voice coil (not shown). The first and second voice coils are insulated from each other. The first voice coil drives the vibration of the first diaphragm 520, and the second voice coil drives the vibration of the second diaphragm 530. The second sound-generating device 600 may include a third voice coil (not shown) and a fourth voice coil (not shown). The third and fourth voice coils are insulated from each other. The third voice coil drives the vibration of the third diaphragm 620, and the fourth voice coil drives the vibration of the fourth diaphragm 630. The first driver may be electrically connected to the first voice coil, and when the first voice coil is energized, it drives the first diaphragm 520 to vibrate. The second driver may be electrically connected to the second voice coil, and when the second voice coil is energized, it drives the second diaphragm 530 to vibrate. The third driver can be electrically connected to the third voice coil, which, when energized, drives the third diaphragm 620 to vibrate. The fourth driver can be electrically connected to the fourth voice coil, which, when energized, drives the fourth diaphragm 630 to vibrate. In other embodiments, the first sound-generating device 500 and the second sound-generating device 600 can also be sound-generating devices such as moving iron loudspeakers, microelectromechanical systems (MEMS) loudspeakers, and planar diaphragms.

[0188] In other embodiments, the first driver, second driver, third driver, and fourth driver may also be disposed on the same housing; for example, the first driver, second driver, third driver, and fourth driver may all be disposed on the first housing 100 / second housing 200. The sound-generating device on the housing without drivers can transmit electrical signals across axes.

[0189] Figure 7 This is a flowchart of a control method for sound generation in an electronic device 1000 according to one embodiment of this application.

[0190] like Figure 7 As shown, this application provides a control method for sound generation in a foldable electronic device 1000. The control method includes:

[0191] S101: Confirm the sound output mode of electronic device 1000; wherein, the sound output mode of electronic device 1000 includes a sound leakage prevention mode and an external speaker mode.

[0192] S102: When the electronic device 1000 is in the anti-leakage mode, the first driver, the second driver, the third driver and the fourth driver respectively provide the first driving signal, the second driving signal, the third driving signal and the fourth driving signal to drive the first diaphragm, the second diaphragm, the third diaphragm and the fourth diaphragm to vibrate respectively. The phase of the first driving signal is opposite to the phase of the second driving signal, the phase of the third driving signal is opposite to the phase of the fourth driving signal, and the phase of the first driving signal is the same as the phase of the third driving signal.

[0193] When the electronic device 1000 is in external speaker mode, the first driver, the second driver, the third driver and the fourth driver respectively provide a first driving signal, a second driving signal, a third driving signal and a fourth driving signal to drive the first diaphragm, the second diaphragm, the third diaphragm and the fourth diaphragm to vibrate, wherein the phase of the first driving signal, the phase of the second driving signal, the phase of the third driving signal and the phase of the fourth driving signal are the same.

[0194] Understandably, the vibrations of the first diaphragm 520, the second diaphragm 530, the third diaphragm 620, and the fourth diaphragm 630 are controlled by four independent drivers, making them less susceptible to interference and resulting in more stable drive signals. This is beneficial for achieving symmetry in the vibration of the four diaphragms, and the electronic device 1000 has a better sound leakage prevention effect.

[0195] In some embodiments, after confirming the sound emission mode of the electronic device 1000 and before providing the first drive signal, the second drive signal, the third drive signal, and the fourth drive signal, the control method may further include: detecting the current open / closed state of the electronic device 1000; wherein, when the sound emission mode is the anti-leakage mode, if the electronic device 1000 is in the open state, the user is prompted that the current state of the electronic device 1000 does not support the anti-leakage mode and that the electronic device needs to be switched to the closed state; if the electronic device 1000 is in the closed state, the audio signal is processed.

[0196] For example, the electronic device 1000 can provide prompts to the user by displaying prompt text on the user interface or by providing voice prompts to the user.

[0197] Understandably, the quadrupole noise reduction mode of the electronic device 1000 is closely related to the open / closed state of the electronic device. When the electronic device 1000 is closed, it uses quadrupole noise reduction, and when it is open, it uses dipole noise reduction. Before playing audio, users should confirm whether the electronic device 1000 is closed. Prompting users to adjust the electronic device 1000 to the closed state can more effectively reduce far-field sound leakage, effectively improve call privacy, provide good privacy protection, and enhance the user experience.

[0198] In some embodiments, the electronic device 1000 may further include a Hall magnet and a Hall sensor (not shown). One of the Hall magnet and the Hall sensor is disposed in the first housing 100, and the other is disposed in the second housing 200. When the electronic device 1000 is in a closed state, the Hall magnet and the Hall sensor can be disposed opposite to each other. The Hall sensor can be used to detect the magnetic field of the Hall magnet to realize the open / closed state detection of the electronic device 1000.

[0199] In some implementations, the structural parts that are the same as those in the previous embodiments will not be described again. In the previous embodiments, when the electronic device 1000 is in the anti-leakage mode, the vibration direction of the first diaphragm 520 on the first housing 100 is opposite to that of the second diaphragm 530. The first diaphragm 520 and the second diaphragm 530 require two electrical signals of different phases to drive them. The following describes an embodiment in which the vibration direction of the first diaphragm 520 on the first housing 100 is the same as that of the second diaphragm 530, and they can be driven simultaneously by a single driving signal.

[0200] Figure 8 This is a schematic diagram of another embodiment of the electronic device 1000 provided in this application, in a closed state. Figure 9 yes Figure 8 An exploded view of one embodiment of the electronic device 1000 shown. Figure 10 yes Figure 8 The diagram shows a partial structural view of the electronic device 1000 in a closed state from another angle. Figure 11 yes Figure 8 The diagram shows a partial structural view of the electronic device 1000 in its open state from another angle.

[0201] like Figures 8 to 11 As shown, the electronic device 1000 may include a first housing 100, a second housing 200, a screen 300, a folding mechanism 400, a first motherboard 410, a second motherboard 420, a first sound-emitting device 500, and a second sound-emitting device 600. The arrangement of the screen 300, folding mechanism 400, first motherboard 410, second motherboard 420, first sound-emitting device 500, and second sound-emitting device 600 can refer to the arrangement of the screen 300, folding mechanism 400, first motherboard 410, second motherboard 420, first sound-emitting device 500, and second sound-emitting device 600 in the previous embodiments. Features of the first housing 100 and second housing 200 that are the same as in the previous embodiments will not be repeated in this embodiment.

[0202] In some embodiments, the first housing 100 may be provided with a first sound outlet 105 and a second sound outlet 106. The second housing 200 may be provided with a third sound outlet 205 and a fourth sound outlet 206. When the electronic device 1000 is in a closed state, the first housing 100 and the second housing 200 are arranged opposite each other in a first direction. The line connecting the second sound outlet 106, the third sound outlet 205, and the fourth sound outlet 206 forms a first plane. The first sound outlet 105 is located outside the first plane. The line connecting the first sound outlet 105 and the second sound outlet 106 is a third line L3, and the line connecting the third sound outlet 205 and the fourth sound outlet 206 is a fourth line L4. The third line L3 and the fourth line L4 are intersecting.

[0203] For example, when the electronic device 1000 is in the anti-leakage mode, the electronic device 1000 is in a closed state, the first housing 100 and the second housing 200 are arranged opposite to each other in a first direction, the vibration direction of the first diaphragm 520 is the same as the vibration direction of the second diaphragm 530, the vibration direction of the third diaphragm 620 is the same as the vibration direction of the fourth diaphragm 630, and the vibration direction of the first diaphragm 520 and the vibration direction of the third diaphragm 620 are opposite. The sound waves emitted from the first sound outlet 105, the second sound outlet 106, the third sound outlet 205 and the fourth sound outlet 206 can form an acoustic quadrupole in space, and the electronic device 1000 is in the anti-leakage mode. It can be understood that compared with a dipole, an acoustic quadrupole can more effectively reduce far-field sound leakage, effectively improve the privacy of calls, and has a good privacy protection function.

[0204] For example, when the electronic device 1000 is in external speaker mode, it can be either open or closed. In this case, the vibration directions of the first diaphragm 520, the second diaphragm 530, the third diaphragm 620, and the fourth diaphragm 630 can be the same, and the sound phases of the first sound outlet 105, the second sound outlet 106, the third sound outlet 205, and the fourth sound outlet 206 can be the same. Therefore, the four sound waves can be superimposed to provide sufficient sound loudness and higher sound quality.

[0205] It is understandable that the diaphragms on the same housing vibrate in the same direction (the vibration direction of the first diaphragm 520 is the same as that of the second diaphragm 530, and the vibration direction of the third diaphragm 620 is the same as that of the fourth diaphragm 630). In this way, the two diaphragms on the same housing can share the drive signal, and the four diaphragms are controlled by two independent drives, which is more cost-effective.

[0206] In some embodiments, the first sound outlet 105 and the second sound outlet 106 are located at different heights. That is, the distances between the first sound outlet 105, the second sound outlet 106, and the first top surface 102 are different. It is understood that by setting the first sound outlet 105 and the second sound outlet 106 at different heights, when the first housing 100 and the second housing 200 are arranged opposite each other in the first direction, it is beneficial for the lines connecting the second sound outlet 106, the third sound outlet 205, and the fourth sound outlet 206 to form a first plane. The first sound outlet 105 can be located outside the first plane to achieve the intersection of the third line L3 and the fourth line L4.

[0207] For example, the first sound outlet 105 can be disposed on the first back surface 104, and the second sound outlet 106 can be disposed on the first top surface 102. The third sound outlet 205 and the fourth sound outlet 206 can both be disposed on the second top surface 202. In this way, the first sound outlet 105 and the second sound outlet 106 can be located at different heights without changing the shape of the first housing 100, so that the first sound outlet 105 can be located outside the first plane. Furthermore, compared to the scheme where both the first sound outlet 105 and the second sound outlet 106 are located on the first top surface 102, the first sound outlet 105 and the second sound outlet 106 are located on different surfaces of the first outer shell 100. The first sound outlet 105 can be located at any position on the first back surface 104, and the second sound outlet 106 can be located at any position on the first top surface 102. The restrictions on the first sound outlet 105 and the second sound outlet 106 are smaller, and there are more arrangement options for the positions of the first sound outlet 105 and the second sound outlet 106. The first sound outlet 105 and the second sound outlet 106 can be set to be larger. Furthermore, the first sound outlet 105 is located on the first back surface 104, and the external screen 320 of the electronic device 1000 can be disposed on the first back surface 104. When the user uses the electronic device 1000, the first sound outlet 105 can face the side where the user is located. When the electronic device 1000 emits sound, the sound waves of the first sound outlet 105 can propagate towards the side where the user is located. Compared with the first sound outlet 105 and the second sound outlet 106 both being disposed on the first top surface 102, this embodiment is beneficial to improving the loudness of the sound heard by the user and improving the user's experience.

[0208] Figure 12 yes Figure 9 The diagram shows a structural schematic of another embodiment of the first sound-generating device 500 and the second sound-generating device 600 shown.

[0209] like Figures 10 to 12 As shown, the first sound-generating device 500 may include a first acoustic conduit 540 and a second acoustic conduit 550. The second sound-generating device 600 may include a third acoustic conduit 640 and a fourth acoustic conduit 650. Compared to Embodiment 1, the positions of the first sound outlet 105 and the second sound outlet 106 in this embodiment are adjusted. The lengths and shapes of the first acoustic conduit 540 and the second acoustic conduit 550 are also adjusted according to the positions of the first sound outlet 105 and the second sound outlet 106, so that the sound emitted by the vibration of the first diaphragm 520 can be transmitted through the third acoustic conduit 640 via the first sound outlet 105, and the sound emitted by the vibration of the second diaphragm 530 can be transmitted through the fourth acoustic conduit 650 via the second sound outlet 106.

[0210] In other embodiments, the first sound outlet 105 and the second sound outlet 106 can both be disposed on the first top surface 102, and the first top surface 102 can be disposed at an angle to the second top surface 202, or the first top surface 102 can be a stepped surface, and the first sound outlet 105 and the second sound outlet 106 can be located on different steps of the stepped surface. In this way, the first sound outlet 105 and the second sound outlet 106 can also be located at different heights.

[0211] like Figure 10 and Figure 11 As shown, in some embodiments, the symmetry plane S1 of the first housing 100 passes through the first sound outlet 105 and the second sound outlet 106. The symmetry plane S1 of the first housing 100 is parallel to the bending axis of the electronic device 1000 and parallel to the first direction. It is understood that when a user plays audio using the anti-leakage mode of the electronic device 1000, regardless of whether the user holds the electronic device 1000 in their left or right hand, the positions of the first sound outlet 105 and the second sound outlet 106 relative to the user's ears are approximately the same. There will be no situation where the first sound outlet 105 and the second sound outlet 106 are closer to the user's ears when held on the left or right side, resulting in a louder sound. Users do not need to distinguish between their left and right hands when using the electronic device 1000, which improves the user experience.

[0212] In other embodiments, the first sound outlet 105 and the second sound outlet 106 may also be located on one side of the plane of symmetry of the first housing 100, or the first sound outlet 105 and the second sound outlet 106 may be located on both sides of the plane of symmetry of the first housing 100.

[0213] In some embodiments, the fourth connecting line L4 may have an acute angle (e.g., 60°, 45°, 20°, 10°, etc.) with the second direction, or the fourth connecting line L4 may be parallel to the second direction. It is understood that, compared to a scheme where the third sound outlet 205 and the fourth sound outlet 206 are arranged along the thickness direction of the electronic device 1000, in this embodiment, the third sound outlet 205 and the fourth sound outlet 206 can be arranged along the second direction, that is, along the length direction of the electronic device 1000. The third sound outlet 205 and the fourth sound outlet 206 are less restricted, and therefore can be designed to be larger.

[0214] In some embodiments, the third sound outlet 205 and the fourth sound outlet 206 are symmetrical about the axis W2 of the second housing 200, and the axis W2 of the second housing 200 is parallel to the bending axis of the electronic device 1000. Thus, when a user plays audio using the anti-leakage mode of the electronic device 1000, regardless of whether the user holds the electronic device 1000 in their left or right hand, the positions of the third sound outlet 205 and the fourth sound outlet 206 relative to the user's ear are approximately the same in the second direction, preventing one side from being closer to the user's ear and resulting in a louder sound. Users do not need to distinguish between left and right hands when using the anti-leakage mode of the electronic device 1000, which improves the user experience.

[0215] In other embodiments, the arrangement of the first sound outlet 105 and the second sound outlet 106 on the first housing 100 can be interchanged with the arrangement of the third sound outlet 205 and the fourth sound outlet 206 on the second housing 200.

[0216] In some embodiments, the electronic device 1000 may further include a first driver and a second driver (not shown), with the first driver mounted on the first housing 100 and the second driver mounted on the second housing 200. For example, the first driver may be disposed on a first motherboard, and the second driver may be disposed on a second motherboard. The first driver provides a first drive signal to vibrate the first diaphragm 520 and the second diaphragm 530, and the second driver provides a second drive signal to vibrate the third diaphragm 620 and the fourth diaphragm 630. It is understood that the first driver may be disposed on the first housing 100, and the second driver may be disposed on the second housing 200. In this way, the drive signals for the first sound-generating device 500 and the second sound-generating device 600 do not need to be transmitted through a rotating shaft, simplifying the electrical signal transmission path. Furthermore, the first diaphragm 520 and the second diaphragm 530 share the same drive signal (the first drive signal), and the vibration direction of the first diaphragm 520 may be the same as the vibration direction of the second diaphragm 530. The third diaphragm 620 and the fourth diaphragm 630 share the same driving signal (the second driving signal), and the vibration direction of the third diaphragm 620 can be the same as that of the fourth diaphragm 630. This reduces the number of independent drivers included in the electronic device 1000, thus lowering costs.

[0217] For example, when the electronic device 1000 is in the sound leakage prevention mode, the phases of the first driving signal and the second driving signal can be opposite, so that the vibration direction of the first diaphragm 520 is opposite to the vibration direction of the third diaphragm 620. When the electronic device 1000 is in the external speaker mode, the phases of the first driving signal and the second driving signal can be the same, so that the vibration direction of the first diaphragm 520 is the same as the vibration direction of the third diaphragm 620.

[0218] In some embodiments, taking both the first sound-generating device 500 and the second sound-generating device 600 as examples of moving-coil loudspeakers, the first sound-generating device 500 may include a first voice coil (not shown) and a second voice coil (not shown). The second sound-generating device 600 may include a third voice coil (not shown) and a fourth voice coil (not shown). The first voice coil is used for the vibration of the first diaphragm 520, and the second voice coil is used for the vibration of the second diaphragm 530. The third voice coil is used for the vibration of the third diaphragm 620, and the fourth voice coil is used for the vibration of the fourth diaphragm 630. A first driver may be electrically connected to the first and second voice coils. A second driver may be electrically connected to the third and fourth voice coils. In other embodiments, the first sound-generating device 500 and the second sound-generating device 600 may also be moving-iron loudspeakers, MEMS loudspeakers, and planar diaphragm sound-generating devices.

[0219] In other embodiments, the first driver and the second driver may also be disposed on the same housing, and the sound-generating device on the housing without the driver may transmit electrical signals across the axis.

[0220] Figure 13 This is a flowchart of a control method for sound generation in an electronic device 1000, provided in another embodiment of this application.

[0221] like Figure 13 As shown, in some embodiments, this application provides a control method for sound generation in a foldable electronic device 1000.

[0222] Control methods include:

[0223] S201: Confirm the sound output mode of electronic device 1000; wherein, the sound output mode of electronic device 1000 includes a sound leakage prevention mode and an external speaker mode.

[0224] S202: When the electronic device 1000 is in the anti-leakage mode, the first driver provides a first driving signal to drive the first diaphragm and the second diaphragm to vibrate, and the second driver provides a second driving signal to drive the third diaphragm and the fourth diaphragm to vibrate, wherein the phase of the first driving signal and the phase of the second driving signal are opposite.

[0225] When the electronic device 1000 is in external speaker mode, the first driver provides a first driving signal to drive the first diaphragm and the second diaphragm to vibrate, and the second driver provides a second driving signal to drive the third diaphragm and the fourth diaphragm to vibrate, wherein the phase of the first driving signal and the phase of the second driving signal are the same.

[0226] It is understandable that the first diaphragm 520 and the second diaphragm 530 share the same driving signal, and the vibration direction of the first diaphragm 520 can be the same as that of the second diaphragm 530. Similarly, the third diaphragm 620 and the fourth diaphragm 630 share the same driving signal, and the vibration direction of the third diaphragm 620 can be the same as that of the fourth diaphragm 630. This reduces the number of independent drivers included in the electronic device 1000, thus lowering costs.

[0227] It is understood that this application, with the accompanying drawings, illustrates several schemes for preventing sound leakage in a foldable electronic device 1000 based on the quadrupole principle. The electronic device 1000 may include a first housing 100, a second housing 200, a folding mechanism, a first sound-emitting device 500, and a second sound-emitting device 600. The folding mechanism is connected to the first housing 100 and the second housing 200. The first housing 100 and the second housing 200 are relatively unfolded or folded through the folding mechanism. The first sound-emitting device 500 is mounted on the first housing 100, and the second sound-emitting device 600 is mounted on the second housing 200.

[0228] The first housing 100 has a first sound outlet 105 and a second sound outlet 106 spaced apart. The first sound-generating device 500 includes a first diaphragm 520 and a second diaphragm 530. The sound emitted by the vibration of the first diaphragm 520 is transmitted through the first sound outlet 105, and the sound emitted by the vibration of the second diaphragm 530 is transmitted through the second sound outlet 106. The second housing 200 has a third sound outlet 205 and a fourth sound outlet 206 spaced apart. The second sound-generating device 600 includes a third diaphragm 620 and a fourth diaphragm 630. The sound emitted by the vibration of the third diaphragm 620 is transmitted through the third sound outlet 205, and the sound emitted by the vibration of the fourth diaphragm 630 is transmitted through the fourth sound outlet 206.

[0229] Understandably, when the electronic device 1000 is in anti-leakage mode, quadrupole noise reduction is achieved by setting the vibration directions of the first diaphragm 520, the second diaphragm 530, the third diaphragm 620, and the fourth diaphragm 630. The vibration direction of the first diaphragm 520 on the first housing 100 can be the same as or opposite to the vibration direction of the second diaphragm 530. The vibration direction of the third diaphragm 620 on the second housing 200 can be the same as or opposite to the vibration direction of the fourth diaphragm 630. For example, the vibration direction of the first diaphragm 520 can be opposite to the vibration direction of the second diaphragm 530, the vibration direction of the third diaphragm 620 can be opposite to the vibration direction of the fourth diaphragm 630, and the vibration direction of the first diaphragm 520 can be the same as the vibration direction of the third diaphragm 620. The first diaphragm 520, the second diaphragm 530, the third diaphragm 620, and the fourth diaphragm 630 are controlled by four independent drives, which makes it easier to ensure symmetry and improves the sound leakage prevention capability of the electronic device 1000. For example, the vibration direction of the first diaphragm 520 is the same as that of the second diaphragm 530, and the first diaphragm 520 and the second diaphragm 530 can share a single drive. The vibration direction of the third diaphragm 620 is the same as that of the fourth diaphragm 630, and the third diaphragm 620 and the fourth diaphragm 630 can share a single drive. The electronic device 1000 only needs to set two drives to achieve vibration direction control of the four diaphragms, which is more cost-effective.

[0230] It is understandable that when the electronic device 1000 is in the anti-leakage mode, the two vibration schemes mentioned above can be used to achieve quadrupole noise reduction by designing the arrangement of the first sound outlet 105, the second sound outlet 106, the third sound outlet 205 and the fourth sound outlet 206 on the first housing 100 and the second housing 200.

[0231] For example, the vibration direction of the first diaphragm 520 is opposite to that of the second diaphragm 530, the vibration direction of the third diaphragm 620 is opposite to that of the fourth diaphragm 630, and the vibration direction of the first diaphragm 520 is the same as that of the third diaphragm 620. The first housing 100 and the second housing 200 are arranged opposite to each other in a first direction, which is the thickness direction of the electronic device 1000. The line connecting the first sound outlet 105 and the third sound outlet 205 is the first connecting line L1, and the line connecting the second sound outlet 106 and the fourth sound outlet 206 is the second connecting line L2. The first connecting line L1 and the second connecting line L2 are arranged intersectingly to achieve quadrupole noise reduction.

[0232] For example, the vibration direction of the first diaphragm 520 is the same as that of the second diaphragm 530, and the vibration direction of the third diaphragm 620 is the same as that of the fourth diaphragm 630. The first housing 100 and the second housing 200 are disposed opposite each other in a first direction, which is the thickness direction of the electronic device 1000. The lines connecting the second sound outlet 106, the third sound outlet 205, and the fourth sound outlet 206 form a first plane. The first sound outlet 105 is located outside the first plane. The line connecting the first sound outlet 105 and the second sound outlet 106 is the third connecting line L3, and the line connecting the third sound outlet 205 and the fourth sound outlet 206 is the fourth connecting line L4. The third connecting line L3 and the fourth connecting line L4 are intersected to achieve quadrupole noise reduction.

[0233] It is understood that, without conflict, the embodiments and features in the embodiments of this application can be combined with each other, and any combination of features in different embodiments is also within the protection scope of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0234] It is understood that all the above figures are exemplary illustrations of this application and do not represent the actual size of the product. Furthermore, the dimensional proportions between the components in the figures are not intended to limit the actual product of this application.

[0235] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An electronic device (1000), characterized by, The electronic device (1000) comprises a first shell (100), a second shell (200), a folding mechanism (400), a first sound generating device (500) and a second sound generating device (600), the folding mechanism (400) is connected to the first shell (100) and the second shell (200), the first shell (100) and the second shell (200) are relatively unfolded or folded through the folding mechanism (400), the first sound generating device (500) is installed on the first shell (100), and the second sound generating device (600) is installed on the second shell (200). The first shell (100) is provided with a first sound outlet (105) and a second sound outlet (106) arranged at intervals, the first sound generating device (500) comprises a first diaphragm (520) and a second diaphragm (530), sound generated by vibration of the first diaphragm (520) is transmitted out through the first sound outlet (105), and sound generated by vibration of the second diaphragm (530) is transmitted out through the second sound outlet (106). The second shell (200) is provided with a third sound outlet (205) and a fourth sound outlet (206) arranged at intervals, the second sound generating device (600) comprises a third diaphragm (620) and a fourth diaphragm (630), sound generated by vibration of the third diaphragm (620) is transmitted out through the third sound outlet (205), and sound generated by vibration of the fourth diaphragm (630) is transmitted out through the fourth sound outlet (206). When the electronic device (1000) is in the sound leakage prevention mode, the first shell (100) and the second shell (200) are arranged in a first direction opposite to each other, the first direction is a thickness direction of the electronic device (1000), vibration directions of the first diaphragm (520) and the second diaphragm (530) are opposite, vibration directions of the third diaphragm (620) and the fourth diaphragm (630) are opposite, the vibration direction of the first diaphragm (520) is the same as the vibration direction of the third diaphragm (620), a line connecting the first sound outlet (105) and the third sound outlet (205) is a first line (L1), a line connecting the second sound outlet (106) and the fourth sound outlet (206) is a second line (L2), and the first line (L1) and the second line (L2) are arranged in a cross manner. An included angle between a central axis direction of the first sound outlet (105) and a central axis direction of the second sound outlet (106) is less than or equal to 10°, and / or an included angle between a central axis direction of the third sound outlet (205) and a central axis direction of the fourth sound outlet (206) is less than or equal to 10°.

2. The electronic device (1000) according to claim 1, characterized by, The first shell (100) comprises a first front surface (103), a first back surface (104) and a first top surface (102), the first front surface (103) and the first back surface (104) are arranged opposite to each other in the first direction, and the first top surface (102) is connected between the first front surface (103) and the first back surface (104). The first shell (100) and the second shell (200) are oppositely arranged in the first direction, the first front surface (103) faces the second shell (200), and the first back surface (104) faces away from the second shell (200) when the electronic device (1000) is in the sound leakage prevention mode. The first sound outlet (105) and the second sound outlet (106) are arranged on the first back surface (104).

3. The electronic device (1000) according to claim 1 or 2, characterized by, The first shell (100) and the second shell (200) are oppositely unfolded, and the first shell (100) and the second shell (200) are arranged side by side in a second direction when the electronic device (1000) is in the open state, the first direction and the second direction are arranged at an angle. The line connecting the first sound outlet (105) and the second sound outlet (106) is a third line (L3), and the angle between the third line (L3) and the second direction is an acute angle, or the third line (L3) is parallel to the second direction.

4. The electronic device (1000) according to any one of claims 1 to 3, characterized in that, The first sound outlet (105) and the second sound outlet (106) are symmetrical about the axis (W1) of the first shell (100), and the axis (W1) of the first shell (100) is parallel to the bending axis direction of the electronic device (1000).

5. The electronic device (1000) according to any one of claims 1 to 4, characterized in that, The first sound outlet (105) and the second sound outlet (106) are arranged on the top of the first shell (100).

6. The electronic device (1000) according to claim 2, characterized by, The second shell (200) comprises a second front surface (203), a second back surface (204) and a second top surface (202), the second front surface (203) and the second back surface (204) are oppositely arranged in the first direction, and the second top surface (202) is connected between the second front surface (203) and the second back surface (204). The second front surface (203) faces the first front surface (103) when the electronic device (1000) is in the sound leakage prevention mode. The third sound outlet (205) and the fourth sound outlet (206) are arranged on the second top surface (202).

7. The electronic device (1000) according to claim 3, characterized by, The third sound outlet (205) and the fourth sound outlet (206) are a fourth line (L4), and the angle between the fourth line (L4) and the second direction is an acute angle, or the fourth line (L4) is parallel to the second direction.

8. The electronic device (1000) according to claim 7, characterized by, The third line (L3) and the fourth line (L4) are parallel.

9. The electronic device (1000) according to any one of claims 1 to 8, characterized by, The shape of the first sound outlet (105) is circular or strip-shaped.

10. The electronic device (1000) according to any one of claims 1 to 9, characterized by, The first sound generating device (500) comprises two single diaphragm loudspeakers, and the first diaphragm (520) and the second diaphragm (530) are diaphragms of the two single diaphragm loudspeakers respectively. Alternatively, The first sound generating device (500) comprises a double diaphragm loudspeaker, and the first diaphragm (520) and the second diaphragm (530) are two diaphragms of the double diaphragm loudspeaker.

11. The electronic device (1000) according to claim 10, characterized by, The first diaphragm (520) and the second diaphragm (530) are two diaphragms of the double diaphragm loudspeaker. The first diaphragm (520) and the second diaphragm (530) are arranged along a thickness direction of the first diaphragm (520), or the first diaphragm (520) and the second diaphragm (530) are arranged along a length direction of the first diaphragm (520).

12. The electronic device (1000) according to any one of claims 1 to 11, characterized by, The electronic device (1000) further includes a first driver, a second driver, a third driver, and a fourth driver, the first driver and the second driver are both mounted on the first shell (100), and the third driver and the fourth driver are both mounted on the second shell (200). The first driver is configured to provide a first driving signal to vibrate the first diaphragm (520), the second driver is configured to provide a second driving signal to vibrate the second diaphragm (530), the third driver is configured to provide a third driving signal to vibrate the third diaphragm (620), and the fourth driver is configured to provide a fourth driving signal to vibrate the fourth diaphragm (630). When the electronic device (1000) is in the anti-leakage mode, the phase of the first driving signal and the phase of the second driving signal are opposite, the phase of the third driving signal and the phase of the fourth driving signal are opposite, and the phase of the first driving signal and the phase of the third driving signal are the same. When the electronic device (1000) is in the external playing mode, the phase of the first driving signal, the phase of the second driving signal, the phase of the third driving signal, and the phase of the fourth driving signal are the same.

13. A control method for sound generation of a foldable electronic device (1000), applied to the electronic device (1000) of any one of claims 1 to 11, and having the characteristics that: The electronic device (1000) further includes a first driver, a second driver, a third driver, and a fourth driver, the first driver and the second driver are both mounted on the first shell (100), and the third driver and the fourth driver are both mounted on the second shell (200). The control method includes: Confirming a sound generation mode of the electronic device (1000), wherein the sound generation mode of the electronic device (1000) includes an anti-leakage mode and an external playing mode; When the electronic device (1000) is in the anti-leakage mode, the first driver, the second driver, the third driver, and the fourth driver respectively provide a first driving signal, a second driving signal, a third driving signal, and a fourth driving signal to respectively drive the first diaphragm (520), the second diaphragm (530), the third diaphragm (620), and the fourth diaphragm (630) to vibrate, wherein the phase of the first driving signal and the phase of the second driving signal are opposite, the phase of the third driving signal and the phase of the fourth driving signal are opposite, and the phase of the first driving signal and the phase of the third driving signal are the same. When the electronic device (1000) is in the external mode, the first driver, the second driver, the third driver and the fourth driver provide the first driving signal, the second driving signal, the third driving signal and the fourth driving signal respectively to drive the first diaphragm (520), the second diaphragm (530), the third diaphragm (620) and the fourth diaphragm (630) to vibrate respectively, wherein the phase of the first driving signal, the phase of the second driving signal, the phase of the third driving signal and the phase of the fourth driving signal are the same.

14. An electronic device (1000), characterized by, The electronic device comprises a first shell (100), a second shell (200), a folding mechanism (400), a first sound production device (500) and a second sound production device (600), the folding mechanism (400) is connected to the first shell (100) and the second shell (200), the first shell (100) and the second shell (200) are relatively unfolded or folded through the folding mechanism (400), the first sound production device (500) is installed on the first shell (100), and the second sound production device (600) is installed on the second shell (200). The first shell (100) is provided with a first sound outlet (105) and a second sound outlet (106) arranged at intervals, the first sound production device (500) comprises a first diaphragm (520) and a second diaphragm (530), sound emitted by the first diaphragm (520) is transmitted out through the first sound outlet (105), and sound emitted by the second diaphragm (530) is transmitted out through the second sound outlet (106). The second shell (200) is provided with a third sound outlet (205) and a fourth sound outlet (206) arranged at intervals, the second sound production device (600) comprises a third diaphragm (620) and a fourth diaphragm (630), sound emitted by the third diaphragm (620) is transmitted out through the third sound outlet (205), and sound emitted by the fourth diaphragm (630) is transmitted out through the fourth sound outlet (206). When the electronic device (1000) is in the sound leakage prevention mode, the first shell (100) and the second shell (200) are oppositely arranged in a first direction, the first direction is a thickness direction of the electronic device (1000), vibration directions of the first diaphragm (520) and the second diaphragm (530) are the same, vibration directions of the third diaphragm (620) and the fourth diaphragm (630) are the same, the vibration direction of the first diaphragm (520) is opposite to the vibration direction of the third diaphragm (620), a line connecting the second sound outlet (106), the third sound outlet (205) and the fourth sound outlet (206) is a first plane, the first sound outlet (105) is located outside the first plane, a line connecting the first sound outlet (105) and the second sound outlet (106) is a third line (L3), a line connecting the third sound outlet (205) and the fourth sound outlet (206) is a fourth line (L4), and the third line (L3) and the fourth line (L4) are cross arranged.

15. The electronic device (1000) according to claim 14, characterized by, The first sound outlet (105) and the second sound outlet (106) are located at different heights.

16. The electronic device (1000) according to claim 14 or 15, characterized by, The first shell (100) comprises a first front surface (103), a first back surface (104) and a first top surface (102), the first front surface (103) and the first back surface (104) are oppositely arranged in the first direction, and the first top surface (102) is connected between the first front surface (103) and the first back surface (104). The second shell (200) comprises a second front surface (203), a second back surface (204) and a second top surface (202), the second front surface (203) and the second back surface (204) are oppositely arranged in the first direction, and the second top surface (202) is connected between the second front surface (203) and the second back surface (204). When the electronic device (1000) is in the sound leakage prevention mode, the first shell (100) and the second shell (200) are oppositely arranged in the first direction, the first front surface (103) faces the second front surface (203) of the second shell (200), and the first back surface (104) faces away from the second shell (200). The first sound outlet (105) is arranged on the first back surface (104), the second sound outlet (106) is arranged on the first top surface (102), and the third sound outlet (205) and the fourth sound outlet (206) are both arranged on the second top surface (202).

17. The electronic device (1000) according to claim 15 or 16, characterized by, The symmetry plane (S1) of the first shell (100) passes through the first sound outlet (105) and the second sound outlet (106), the symmetry plane (S1) of the first shell (100) is parallel to the bending axis direction of the electronic device (1000) and parallel to the first direction.

18. The electronic device (1000) according to any one of claims 15-17, characterized by, The first shell (100) and the second shell (200) are relatively unfolded when the electronic device (1000) is in an open state, the first shell (100) and the second shell (200) are arranged side by side along a second direction, and the first direction and the second direction are arranged at an included angle. An included angle between the fourth connecting line (L4) and the second direction is an acute angle, or the fourth connecting line (L4) is parallel to the second direction.

19. The electronic device (1000) according to any one of claims 14-18, characterized by, The third sound outlet (205) and the fourth sound outlet (206) are symmetrical about an axis (W2) of the second shell (200), and the axis (W2) of the second shell (200) is parallel to a bending axis direction of the electronic device (1000).

20. The electronic device (1000) according to any one of claims 14-19, characterized by, The first sound generating device (500) includes two single-diaphragm loudspeakers, and the first diaphragm (520) and the second diaphragm (530) are diaphragms of the two single-diaphragm loudspeakers, respectively. Alternatively, The first sound generating device (500) includes a double-diaphragm loudspeaker, and the first diaphragm (520) and the second diaphragm (530) are two diaphragms of the double-diaphragm loudspeaker.

21. The electronic device (1000) according to any one of claims 14-20, characterized by, The electronic device (1000) further includes a first driver and a second driver, the first driver is mounted on the first shell (100), and the second driver is mounted on the second shell (200). The first driver is configured to provide a first driving signal to vibrate the first diaphragm (520) and the second diaphragm (530), and the second driver is configured to provide a second driving signal to vibrate the third diaphragm (620) and the fourth diaphragm (630). When the electronic device (1000) is in a sound leakage prevention mode, the phase of the first driving signal is opposite to the phase of the second driving signal. When the electronic device (1000) is in an external playing mode, the phase of the first driving signal is the same as the phase of the second driving signal. 22.A control method for making a foldable electronic device (1000) produce sound, applied to the electronic device (1000) of any one of claims 14 to 20, and characterized in that, The electronic device (1000) further includes a first driver and a second driver, the first driver is mounted on the first shell (100), and the second driver is mounted on the second shell (200). The control method includes: Confirming a sound generating mode of the electronic device (1000), wherein the sound generating mode of the electronic device (1000) includes a sound leakage prevention mode and an external playing mode; When the electronic device (1000) is in a sound leakage prevention mode, the first driver provides a first driving signal to drive the first diaphragm (520) and the second diaphragm (530) to vibrate, and the second driver provides a second driving signal to drive the third diaphragm (620) and the fourth diaphragm (630) to vibrate, wherein the phase of the first driving signal is opposite to the phase of the second driving signal. When the electronic device (1000) is in the external mode, the first driver provides a first driving signal to drive the first diaphragm (520) and the second diaphragm (530) to vibrate, and the second driver provides a second driving signal to drive the third diaphragm (620) and the fourth diaphragm (630) to vibrate, wherein the phase of the first driving signal and the phase of the second driving signal are the same.

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