Vibration sound generating device and method

Abstract

The present invention discloses a vibration sound-generating device and method, the vibration sound-generating device comprises: a shell, a partition and at least one sound-generating device, the partition is connected to the shell and a sound cavity is formed between the partition and the shell, each of the sound-generating devices covers an opening and is arranged on a side of the partition away from the sound cavity; wherein the sound-generating device generates vibration after receiving an audio signal, causing the air in the sound cavity to be compressed or stretched through the opening, so that the shell vibrates and emits sound outward. The vibration sound-generating device and method provided by the present invention are simple to manufacture, low in cost, and can effectively avoid noise problems.

Description

Technical Field

[0001] The present invention relates to the technical field of sound generation, and in particular to a vibration sound generation device and method. Background Art

[0002] With the popularization of electronic devices and the continuous improvement of consumers' living standards, users' requirements for the sound quality of electronic devices are also increasing. Figure 1 The existing screen sound-generating device mainly adopts a two-piece design of the exciter. The upper and lower magnets 1 are spaced a certain distance apart and are almost not subjected to force. When the coil 2 is energized, the screen 3, which serves as a diaphragm, drives the screen to vibrate directly and make sound under the action and reaction forces. However, in the above scheme, the flatness of the material of the front shell middle frame 4 is required to be within 0.1mm, so as to ensure the stability of the interval between the upper and lower magnets 1, otherwise the problem of abnormal sound volume is prone to occur. Moreover, if the shell 5 is not strong enough, noise problems are also prone to occur. In addition, the manufacturing is complicated and the cost is high. Summary of the invention

[0003] The object of the present invention is to provide a vibration sound-generating device and method, which are simple to manufacture, low in cost, and can effectively avoid noise problems.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] In a first aspect, an embodiment of the present invention provides a vibration sound-generating device, comprising: a shell, a partition and at least one sound-generating device, wherein the partition is connected to the shell and a sound cavity is formed between the partition and the shell, and each of the sound-generating devices covers a corresponding opening and is arranged on a side of the partition away from the sound cavity; wherein the sound-generating device generates vibration after receiving an audio signal, causing the air in the sound cavity to be compressed or stretched through the opening, so that the shell vibrates and emits sound outward.

[0006] As one of the implementation modes, the vibration sound-generating device further includes a distance detection device, which is connected to the sound-generating device and is used to detect the distance between the device and the user and control the output power of the sound-generating device according to the distance.

[0007] As one implementation manner, the distance detection device is specifically used for at least one of the following:

[0008] When the distance is less than a preset distance threshold, reducing the output power of the sound-generating device;

[0009] When the distance is greater than a preset distance threshold, the output power of the sound generating device is increased.

[0010] As one implementation manner, the material of the shell includes at least one of the following: plastic, glass, and metal.

[0011] As one embodiment, the shell includes a front shell cover plate and a rear shell cover plate connected to the front shell cover plate, the partition plate is respectively connected to the front shell cover plate and the rear shell cover plate, and the sound cavity is formed between the partition plate and the front shell cover plate.

[0012] As one implementation manner, there is a gap at the connection between the partition and the shell.

[0013] As one embodiment, the vibration sound-generating device further includes a printed circuit board; wherein the distance detection device is disposed on the printed circuit board.

[0014] As one implementation manner, the distance detection device is a laser distance sensor, an infrared distance sensor, or an ultrasonic distance sensor.

[0015] In a second aspect, an embodiment of the present invention provides an electronic device, comprising the vibration sound-generating device as described in any one of the first aspects.

[0016] In a second aspect, an embodiment of the present invention provides a vibration sound-generating method, which is applied to a vibration sound-generating device including a shell, a partition and at least one sound-generating device, wherein the partition is connected to the shell and a sound cavity is formed between the partition and the shell, and each of the sound-generating devices covers an opening and is arranged on a side of the partition away from the sound cavity; the method comprises:

[0017] Get the distance to the user;

[0018] The volume of the vibration sound is determined according to the distance.

[0019] As one implementation manner, determining the volume of the vibration sound according to the distance includes:

[0020] Querying a correspondence between a preset scene mode and a distance according to the distance, and acquiring a scene mode corresponding to the distance;

[0021] The volume of the vibration sound is determined according to the scene mode corresponding to the distance.

[0022] As one implementation manner, determining the volume of the vibration sound according to the scene mode corresponding to the distance includes at least one of the following:

[0023] When the scene mode is switched from the first scene mode to the second scene mode, the volume of the vibration sound is reduced;

[0024] When the scene mode is switched from the second scene mode to the first scene mode, the volume of the vibration sound is increased;

[0025] The distance corresponding to the first scene mode is smaller than the distance corresponding to the second scene mode.

[0026] As one implementation mode, reducing the volume of the vibration sound comprises: reducing the output power of the sound-generating device; and / or,

[0027] Increasing the volume of the vibration sound comprises: increasing the output power of the sound-generating device.

[0028] The vibration sound-generating device and method provided in the embodiment of the present invention include: a shell, a partition and at least one sound-generating device, the partition is connected to the shell and a sound cavity is formed between the partition and the shell, each of the sound-generating devices corresponds to covering an opening and is arranged on a side of the partition away from the sound cavity; wherein the sound-generating device generates vibration after receiving an audio signal, causing the air in the sound cavity to be compressed or stretched through the opening, so that the shell vibrates and emits sound outward. In this way, the vibration sound-generating device provided in the embodiment of the present invention has no special requirements for the flatness of the middle frame of the front shell, and the devices used can be ordinary acoustic materials, which are simple to manufacture and low in cost, and can effectively avoid noise problems and improve user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of an existing screen sound-generating device;

[0030] Figure 2 A schematic structural diagram of a vibration sound-generating device provided by an embodiment of the present invention;

[0031] Figure 3 A schematic diagram of a flow chart of a vibration sound generation method provided by an embodiment of the present invention;

[0032] Figure 4 A schematic diagram of a specific flow chart of a vibration sound generation method provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is further elaborated in detail below in conjunction with the accompanying drawings and specific embodiments of the specification. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the technical field of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] Refer to 2, which is a schematic diagram of the structure of the vibration sound-generating device provided in an embodiment of the present invention, including a shell 10, a partition 11 and at least one sound-generating device 12, wherein the partition 11 is connected to the shell 10 and a sound cavity is formed between the partition 11 and the shell 10, and each of the sound-generating devices 12 covers an opening 13 and is arranged on a side of the partition 11 away from the sound cavity; wherein the sound-generating device 12 generates vibration after receiving an audio signal, causing the air in the sound cavity to be compressed or stretched through the opening 13, so that the shell 10 vibrates and emits sound outward.

[0035] It is understandable that the shape or structure of the housing 10 can be set according to actual needs. For example, when the vibration sound-generating device is applied to a mobile phone, the housing 10 can be the screen and touch screen of the mobile phone. Here, the partition 11 is provided with the same number of openings 13 as the number of the sound-generating devices 12. In one embodiment, please refer to Figure 2 , the shell 10 includes a front shell cover plate 101 and a rear shell cover plate 102 connected to the front shell cover plate 101, the partition plate 11 is connected to the front shell cover plate 101 and / or the rear shell cover plate 102, and the sound cavity is formed between the partition plate 11 and the front shell cover plate 101. The connection between the front shell cover plate 101 and the front shell cover plate 101 can be a fixed connection or a detachable connection, including but not limited to a snap connection, adhesive bonding, etc. The partition plate 11 can be specifically connected to the bottom end of the front shell cover plate 101, can be specifically connected to the bottom end of the rear shell cover plate 102, or can be specifically connected to the connection between the front shell cover plate 101 and the front shell cover plate 101. In addition, there can be a gap (not shown in the figure) at the connection between the partition plate 11 and the shell 10, so that useless or redundant gas or sound in the sound cavity can be dissipated to the outside of the sound cavity. The material of the shell 10 includes at least one of the following: plastic, glass, metal. In order for the housing 10 to vibrate conveniently and accurately, the thickness of the housing 10 should be as thin as possible and the stability should be high.

[0036] Here, the shape and size of the opening 13 can be set according to actual needs, but it is necessary to ensure that the sound device 12 can completely cover the opening 13, for example, the opening 13 can be round or square. When there are multiple openings 13, the multiple openings 13 can be arranged at equal intervals. It can be understood that after the sound device 12 receives the audio signal, the diaphragm of the sound device 12 will vibrate back and forth as the sound device 12 works. Since the opening 13 connects the space formed between the partition 11 and the sound device with the sound cavity, the air in the sound cavity will be compressed or stretched accordingly, that is, when the diaphragm of the sound device 12 moves in a direction away from the partition 11, the air in the sound cavity is stretched, and when the diaphragm of the sound device 12 moves in a direction close to the partition 11, the air in the sound cavity is compressed, so that the housing 10 vibrates, so that the sound emitted by the sound device 12 can reach the outside through the housing 10 to achieve outward sound.

[0037] In one embodiment, the vibration sound-generating device further includes a distance detection device 14, which is connected to the sound-generating device 12 and is used to detect the distance between the user and the sound-generating device 12, and to control the output power of the sound-generating device 12 according to the distance. It can be understood that when the user is far away from the vibration sound-generating device, the sound emitted by the vibration sound-generating device should be as loud as possible to facilitate the user to hear clearly, and when the user is close to the vibration sound-generating device, the sound emitted by the vibration sound-generating device can be appropriately small to avoid scaring or disturbing the user, thereby improving the user experience. The distance detection device 14 is used to detect the distance between the user and can be a distance sensor, such as a laser distance sensor, an infrared distance sensor, an ultrasonic distance sensor, etc. The distance detection device can be specifically used for at least one of the following: when the distance is less than a preset distance threshold, the output power of the sound-generating device is reduced; when the distance is greater than the preset distance threshold, the output power of the sound-generating device is increased. It can be understood that when the distance is less than the preset distance threshold, it means that the distance between the user and the vibration sound-generating device is relatively close. At this time, the output power of the sound-generating device can be reduced on the basis of the preset output power to reduce the sound emitted by the vibration sound-generating device; when the distance is equal to or greater than the preset distance threshold, it means that the distance between the user and the vibration sound-generating device is relatively far. At this time, the output power of the sound-generating device can be increased on the basis of the preset output power to increase the sound emitted by the vibration sound-generating device. It should be noted that the reduction or increase of the output power of the sound-generating device can be to reduce or increase the current output power of the sound-generating device by a preset power threshold. In this way, the output power of the sound-generating device is controlled according to the distance between the user, thereby automatically controlling the sound volume emitted by the vibration sound-generating device, further improving the user experience.

[0038] In one embodiment, the vibration sound-generating device further includes a printed circuit board 15; wherein the distance detection device 14 is disposed on the printed circuit board 15. Here, the shape of the printed circuit board 15 may be a ring shape surrounding the sound-generating device 12. The distance detection device 14 may be disposed at any position on the printed circuit board 15, and may be specifically disposed according to actual needs.

[0039] In summary, the vibration sound-generating device provided in the above embodiments has no special requirements on the flatness of the middle frame of the front shell. The components used can be ordinary acoustic materials, which are simple to manufacture and low in cost, and can effectively avoid noise problems and improve user experience.

[0040] An embodiment of the present invention further provides an electronic device, comprising any one of the vibration sound-generating devices described above.

[0041] See also Figure 3 , is a flow chart of a vibration sound-generating method provided by an embodiment of the present invention, the vibration sound-generating method is applied to a vibration sound-generating device including a shell, a partition and at least one sound-generating device, the partition is connected to the shell and a sound cavity is formed between the partition and the shell, each of the sound-generating devices covers an opening and is arranged on a side of the partition away from the sound cavity, the structure of the vibration sound-generating device can be seen in Figure 2 As shown; the method comprises the following steps:

[0042] Step S201: obtaining the distance between the user and the user;

[0043] Here, the vibration sound-generating device can actively monitor the distance between the device and the user in real time or irregularly, or can obtain the distance between the device and the user collected by the distance detection device, thereby obtaining the distance between the device and the user accordingly.

[0044] Step S202: determining the volume of the vibration sound according to the distance.

[0045] It is understandable that when the user is close to the vibration sound-generating device, the volume of the vibration sound-generating device can be reduced to avoid the volume being too loud and affecting the user; when the user is far away from the vibration sound-generating device, the volume of the vibration sound-generating device can be increased to avoid the volume being too low and the user being unable to obtain audio information normally. For the vibration sound-generating device, the volume of the vibration sound can be adjusted by controlling the output power of the sound-generating device. For example, when the output power of the sound-generating device is reduced, the volume of the vibration sound-generating device will be reduced, and when the output power of the sound-generating device is increased, the volume of the vibration sound-generating device will be increased.

[0046] In one embodiment, determining the volume of the vibration sound according to the distance includes:

[0047] Querying a correspondence between a preset scene mode and a distance according to the distance, and acquiring a scene mode corresponding to the distance;

[0048] The volume of the vibration sound is determined according to the scene mode corresponding to the distance.

[0049] It can be understood that different scene modes can be pre-set for different distances from the user to facilitate the adjustment of the volume of the vibration sound. For example, the scene mode corresponding to the distance less than the preset distance threshold can be set as the first scene mode, and the scene mode corresponding to the distance equal to or greater than the preset distance threshold can be set as the second scene mode. At the same time, different volume control strategies can be pre-set for different scene modes of vibration. For example, when representing a scene mode with a close distance from the user, the volume of the vibration sound can be controlled to a fixed volume value; and when representing a scene mode with a long distance from the user, the volume of the vibration sound can be controlled to another fixed volume value, wherein the other fixed volume value can be greater than the fixed volume value. In a specific embodiment, the volume of the vibration sound is determined according to the scene mode corresponding to the distance, including at least one of the following: when the scene mode is switched from the first scene mode to the second scene mode, the volume of the vibration sound is reduced; when the scene mode is switched from the second scene mode to the first scene mode, the volume of the vibration sound is increased; wherein the distance corresponding to the first scene mode is less than the distance corresponding to the second scene mode. It can be understood that when the user gradually approaches the vibration sound-generating device, the distance between the vibration sound-generating device and the user is getting closer and closer. If the scene mode is switched from the second scene mode to the first scene mode, the volume of the vibration sound can be reduced; and when the user gradually moves away from the vibration sound-generating device, the distance between the vibration sound-generating device and the user is getting farther and farther. If the scene mode is switched from the first scene mode to the second scene mode, the volume of the vibration sound can be increased. It should be noted that the reduction or increase of the volume of the vibration sound can be to reduce the volume of the vibration sound by a volume threshold or increase a volume threshold accordingly, or it can be to gradually reduce or increase the volume of the vibration sound in a linear proportional relationship. Here, the reduction of the volume of the vibration sound may include: reducing the output power of the sound-generating device; and / or, the increase of the volume of the vibration sound may include: increasing the output power of the sound-generating device.

[0050] In summary, in the vibration sound generation method provided in the above embodiment, the volume of the vibration sound generation is determined according to the distance between the vibration sound generation device and the user, so that the volume of the vibration sound generation can be accurately controlled, thereby improving the user experience.

[0051] Based on the same inventive concept as the above-mentioned embodiment, this embodiment describes the technical solution of the above-mentioned embodiment in detail through specific examples. In this embodiment, the sound-generating device is a sound generator, the distance detection device is a distance sensor, there is only one sound-generating device and opening, and the rear shell cover is a screen. Please refer to Figure 2, a sound generator 12 is used to sound the cavity of the front shell cover plate 101 through the opening 13 of the partition plate 11, wherein the cavity of the front shell cover plate 101 and the partition plate 11 are approximately sealed, and a small amount of leakage can be allowed at a relatively long distance from the sound generator 12. When the sound generator 12 is working, its diaphragm will vibrate back and forth, causing the air in the cavity formed by the front shell cover plate 101 and the partition plate 11 to compress or stretch, thereby driving the front shell cover plate 101 to vibrate and transmit the sound to the space outside the cavity. The phase of the front shell cover plate 101 is directly related to the movement direction of the diaphragm of the sound generator 12. In this way, the sound of the sound generator 12 can reach the outside of the mobile phone through the front shell cover plate 101, realizing the screen sound function. The materials of the front shell cover plate 101 and the rear shell cover plate 102 include but are not limited to plastic, glass, metal, etc.

[0052] The following is a detailed description of the above process in combination with the specific process. Figure 4 , which is a specific flow chart of the vibration sound generation method provided by an embodiment of the present invention, comprises the following steps:

[0053] Step S301: Start;

[0054] Step S302: working in standby mode;

[0055] Step S303: scene determination;

[0056] Step S304: Start answering mode;

[0057] Step S305: Turn on the speaker mode.

[0058] Specifically, after the vibration sound-generating device is started, the distance sensor 14 works in the standby mode and performs scene judgment. When the distance sensor 14 senses that the human body is approaching a certain distance, it enters the answering mode and calls the corresponding audio parameters. At the same time, the sound generator 12 transmits the sound into the cavity composed of the front shell cover plate 101 and the partition plate 11, and transmits the sound to the outside world through the screen sound. Then, when the human body is a certain distance away from the vibration sound-generating device, such as more than 1 cm, the distance sensor 14 senses the corresponding change, enters the speaker mode according to the scene judgment, and calls the corresponding audio parameters to increase the output power of the sound generator 12, so that the transmitted sound enters the cavity composed of the front shell cover plate 101 and the partition plate 11 correspondingly larger, the screen sound becomes louder, and the sound perceived by the human body also becomes louder. When the human body approaches the vibration sound-generating device again, it returns to the answering mode according to the scene judgment; or when the human body moves away from the device again and leaves the detection range of the ranging sensor 14, it returns to the answering mode according to the corresponding scene judgment, thereby completing the control between the ranging sensor and the screen sound volume adjustment.

[0059] In summary, there is no special requirement for the flatness of the front shell middle frame in the embodiment of the present invention, and the existing requirement of 0.3mm can be fully met. The components used are ordinary acoustic materials, and there is no risk of introducing new materials and suppliers, and the cost is low. In addition, the magnet rigid drive in the prior art is changed to gas flexible drive, which effectively avoids the noise problem, reduces the requirements for the flatness and rigidity of the shell, and greatly reduces the cost.

[0060] Based on the same inventive concept as the above-mentioned embodiment, this embodiment further provides a computer storage medium, in which a computer program is stored. The computer storage medium may be a ferromagnetic random access memory (FRAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a flash memory, a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM) or the like; it may also be various devices including one or any combination of the above-mentioned memories, such as a mobile phone, a computer, a tablet device, a personal digital assistant, etc. When the computer program stored in the computer storage medium is executed by the processor, the above-mentioned vibration sound generation method is implemented. For the specific steps implemented when the computer program is executed by the processor, please refer to Figure 3 The description of the illustrated embodiment will not be repeated here.

[0061] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] In this document, the terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than those listed and may also include additional elements not expressly listed.

[0063] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A vibration sound-generating device, characterized in that: It includes a shell, a partition and at least one sound-emitting device, the partition is connected to the shell, there is a gap at the connection between the partition and the shell, and a sound cavity is formed between the partition and the shell, each of the sound-emitting devices covers an opening and is arranged on a side of the partition away from the sound cavity; wherein the sound-emitting device vibrates after receiving an audio signal, causing the air in the sound cavity to be compressed or stretched through the opening, so that the shell vibrates and emits sound outward.

2. The vibration sound-generating device according to claim 1, characterized in that: The vibration sound-generating device also includes a distance detection device, which is connected to the sound-generating device and is used to detect the distance between the device and the user and control the output power of the sound-generating device according to the distance.

3. The vibration sound-generating device according to claim 2, characterized in that: The distance detection device is specifically used for at least one of the following: When the distance is less than a preset distance threshold, reducing the output power of the sound-generating device; When the distance is greater than a preset distance threshold, the output power of the sound generating device is increased.

4. The vibration sound-generating device according to claim 1, characterized in that: The shell comprises a front shell cover plate and a rear shell cover plate connected to the front shell cover plate, the partition plate is connected to the front shell cover plate and / or the rear shell cover plate, and the sound cavity is formed between the partition plate and the front shell cover plate.

5. The vibration sound-generating device according to claim 2, characterized in that: The vibration sound-generating device further comprises a printed circuit board; wherein the distance detection device is arranged on the printed circuit board.

6. The vibration sound-generating device according to claim 2, characterized in that: The distance detection device is a laser distance sensor, an infrared distance sensor, or an ultrasonic distance sensor.

7. A vibration sound-generating method, applied to a vibration sound-generating device comprising a shell, a partition and at least one sound-generating device, wherein the partition is connected to the shell, a gap exists at the connection between the partition and the shell, and a sound cavity is formed between the partition and the shell, and each of the sound-generating devices covers an opening and is arranged on a side of the partition away from the sound cavity; characterized in that: The method comprises: Get the distance to the user; The volume of the vibration sound is determined according to the distance.

8. The vibration sound generation method according to claim 7, characterized in that: The step of determining the volume of the vibration sound according to the distance includes: Querying a correspondence between a preset scene mode and a distance according to the distance, and acquiring a scene mode corresponding to the distance; The volume of the vibration sound is determined according to the scene mode corresponding to the distance.

9. The vibration sound generation method according to claim 8, characterized in that: The determining the volume of the vibration sound according to the scene mode corresponding to the distance includes at least one of the following: When the scene mode is switched from the first scene mode to the second scene mode, the volume of the vibration sound is reduced; When the scene mode is switched from the second scene mode to the first scene mode, the volume of the vibration sound is increased; The distance corresponding to the first scene mode is smaller than the distance corresponding to the second scene mode.

10. The vibration sound generation method according to claim 9, characterized in that: The reducing the volume of the vibration sound comprises: reducing the output power of the sound-generating device; and / or, Increasing the volume of the vibration sound comprises: increasing the output power of the sound-generating device.

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