Speaker assembly, seat and, electronic device

Abstract

The present invention relates to the technical field of acoustic-electric conversion, disclosed are a speaker assembly, a seat, and an electronic device, which can realize directional audio emission and has a simple structure. The speaker assembly comprises: a mounting body; a plurality of dipole speaker units, each of the dipole speaker units being disposed inside the mounting body and the dipole speaker units being configured to form dipole sound sources so as to realize directional sound emission; and a control unit, connected to each of the dipole speaker units and configured to control the control parameters of the dipole speaker units so as to adjust the sound field of the dipole speaker units in a preset region.

Description

Speaker components, seats and electronic devices Technical Field

[0001] This invention relates to the field of sound-to-electricity conversion technology, and in particular to a loudspeaker assembly, a seat, and an electronic device. Background Technology

[0002] With continuous technological advancements, advanced sound field control technologies such as directional sound technology and independent sound zone technology are constantly being developed in fields such as vehicles. Directional sound technology is used to enable audio content to be played in designated areas within the vehicle and to facilitate private in-vehicle calls, thereby ensuring the privacy of the conversation. Independent sound zone technology is used to enable the segmented playback of audio within the vehicle, meeting the needs of occupants in different locations to simultaneously enjoy different audio, or to ensure that occupants do not disturb each other when some occupants are enjoying audio and others need to rest or make calls. Summary of the Invention

[0003] The present invention provides a speaker assembly, a seat, and an electronic device that can achieve directional audio output and has a simple structure.

[0004] To achieve the above objectives, the present invention provides a loudspeaker assembly, comprising: a mounting body; a plurality of dipole loudspeaker units; each of the dipole loudspeaker units being disposed inside the mounting body; the dipole loudspeaker units being used to form dipole sound sources to achieve directional sound emission; and a control unit electrically connected to each of the dipole loudspeaker units for controlling the control parameters of the dipole loudspeaker units to adjust the sound field of the dipole loudspeaker units in a preset area.

[0005] According to some embodiments of the present invention, the dipole loudspeaker unit includes two independently disposed first loudspeakers, the driving signals of the two first loudspeakers being out of phase and having the same amplitude; the first loudspeaker includes a first housing and a first sound-emitting part, the first housing having a first receiving cavity, the first sound-emitting part being disposed within the first housing and dividing the first receiving cavity into a first front sound cavity and a first rear sound cavity, the first housing having a first sound-emitting hole, the first front sound cavity communicating with the outside of the first housing through the first sound-emitting hole; the first rear sound cavity being closed; the first rear sound cavities of the two first loudspeakers being disposed opposite to each other.

[0006] According to some embodiments of the present invention, the dipole loudspeaker unit includes two second loudspeakers connected in communication, the driving signals of the two second loudspeakers being out of phase and having the same amplitude; the two second loudspeakers connected in communication include a second housing and two second sound-emitting parts, a second receiving cavity is provided inside the second housing, the two second sound-emitting parts are disposed opposite to each other inside the second housing and divide the second receiving cavity into a second rear acoustic cavity and two second front acoustic cavities, the second housing is provided with a second sound-emitting hole, and the two second front acoustic cavities are respectively connected to the outside of the second housing through corresponding second sound-emitting holes; the second rear acoustic cavity is closed.

[0007] According to some embodiments of the present invention, the dipole loudspeaker unit includes a third loudspeaker; the third loudspeaker includes a third housing and a third sound-emitting part, the third housing is provided with a third receiving cavity, the third sound-emitting part is disposed in the third housing and divides the third receiving cavity into a third front sound cavity and a third rear sound cavity, the third housing is provided with a third sound-emitting hole and a fourth sound-emitting hole, the third front sound cavity communicates with the outside of the third housing through the third sound-emitting hole, and the third rear sound cavity communicates with the outside of the third housing through the fourth sound-emitting hole.

[0008] According to some embodiments of the present invention, each of the plurality of dipole loudspeaker units includes any one of two independently arranged first loudspeakers, two connected second loudspeakers, and one third loudspeaker; or, in the plurality of dipole loudspeaker units, a portion of the dipole loudspeaker units each includes two independently arranged first loudspeakers or two connected second loudspeakers, while the remaining portion of the dipole loudspeaker units each includes one third loudspeaker.

[0009] According to some embodiments of the present invention, the mounting body is a headrest or a neck pillow.

[0010] According to some embodiments of the present invention, the headrest or the neck pillow includes a straight strip-shaped body portion, and a dipole speaker unit is respectively disposed at each of the opposite ends of the straight strip-shaped body portion; or, the headrest or the neck pillow includes a curved body portion, the curved body portion including a straight strip-shaped sub-part and two curved sub-parts, the two curved sub-parts being respectively located at the two ends of the straight strip-shaped sub-part, and a dipole speaker unit is respectively disposed inside the two curved sub-parts.

[0011] According to some embodiments of the present invention, the control parameters include any one or any combination of the amplitude of the driving signal, the phase of the driving signal, the delay time of the driving signal, and the frequency of the driving signal.

[0012] The present invention also provides a seat, including a speaker assembly as described in the above embodiments; the mounting body of the speaker assembly is the headrest or neck pillow of the seat.

[0013] The present invention also provides an electronic device, including the seat as described in the above embodiments.

[0014] The present invention provides a speaker assembly, a seat, and an electronic device. The speaker assembly forms a dipole sound source through dipole speaker units, thereby achieving directional sound emission. At the same time, the control parameters of each dipole speaker unit are adjusted by a control unit, thereby further regulating the sound field of each dipole speaker unit in a preset area, thereby further improving the effect of directional sound emission and significantly enhancing the user experience. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 is a structural schematic diagram of a loudspeaker assembly provided in an embodiment of the present invention;

[0017] Figure 2 is a graph showing the directivity of a dipole sound field according to an embodiment of the present invention.

[0018] Figure 3 is a schematic diagram of the structure of a dipole loudspeaker unit provided in an embodiment of the present invention;

[0019] Figure 4 is a schematic diagram of another dipole loudspeaker unit provided in an embodiment of the present invention;

[0020] Figure 5 is a structural schematic diagram of another dipole loudspeaker unit provided in an embodiment of the present invention;

[0021] Figure 6 is a structural schematic diagram of a seat provided in an embodiment of the present invention;

[0022] Figure 7a is a top view of Figure 6, and Figure 7b is a top view of the user's head;

[0023] Figure 8 is a structural schematic diagram of another seat provided in an embodiment of the present invention;

[0024] Figure 9a is a top view of Figure 8, and Figure 9b is a top view of the user's head;

[0025] Figure 10 is a structural schematic diagram of another type of seat provided in an embodiment of the present invention;

[0026] Figure 11a is a top view of Figure 10, and Figure 11b is a top view of the user's head;

[0027] Figure 12 is a structural schematic diagram of another type of seat provided in an embodiment of the present invention;

[0028] Figure 13a is a top view of Figure 12, and Figure 13b is a top view of the user's head;

[0029] Figure 14 is a structural schematic diagram of another seat provided in an embodiment of the present invention;

[0030] Figure 15a is a top view of Figure 14, and Figure 15b is a top view of the user's head;

[0031] Figure 16 is a structural schematic diagram of another seat provided in an embodiment of the present invention;

[0032] Figure 17a is a top view of Figure 16, and Figure 17b is a top view of the user's head;

[0033] Figure 18 is a structural schematic diagram of a car provided in an embodiment of the present invention;

[0034] Figure 19 is a flowchart illustrating a control method for an electronic device according to an embodiment of the present invention;

[0035] Figure 20a is a top view of the straight body part, Figure 20b is a curved body part, and Figure 20c is a top view of the user's head.

[0036] Figure 21 is a structural schematic diagram of a seat provided in an embodiment of the present invention;

[0037] Figure 22a is a top view of the neck pillow in Figure 21, Figure 22b is another top view of the neck pillow in Figure 21, and Figure 22c is a top view of the user's head. Embodiments of the present invention

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the various embodiments of this invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this invention to facilitate a better understanding of the invention. However, the technical solutions claimed in this invention can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0039] In the description of the embodiments of this invention, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this invention, "multiple" means two or more, unless otherwise explicitly defined.

[0040] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0041] In the description of the embodiments of the present invention, technical terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, 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 the present invention.

[0042] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0043] In the accompanying drawings corresponding to the embodiments of the present invention, the thickness and area of ​​the layers are enlarged for better understanding and ease of description.

[0044] In the description of the embodiments of the present invention, when a component “includes” another component, other components are not excluded unless otherwise stated, and other components may be further included.

[0045] This invention provides a loudspeaker assembly, as shown in FIG1, including: a mounting body 1; a plurality of dipole loudspeaker units 2; each dipole loudspeaker unit is disposed inside the mounting body; the dipole loudspeaker units are used to form dipole sound sources to achieve directional sound emission; and a control unit 3, which is electrically connected to each dipole loudspeaker unit 2 and is used to control the control parameters of the dipole loudspeaker units 2 to adjust the sound field of the dipole loudspeaker units 2 in a preset area.

[0046] The specific structure of the mounting body described above is not limited and can be selected according to different application scenarios. For example, if the speaker assembly is used in a vehicle, the mounting body can be a headrest, neck pillow, or a part of the vehicle seat.

[0047] The aforementioned dipole sound source refers to two sound source points that are very close to each other, with the same vibration amplitude but opposite phase. The synthesized sound source composed of such two point sound sources is called a dipole sound source. The specific structure of the aforementioned dipole loudspeaker unit is not limited, as long as it can generate a dipole sound source.

[0048] It should be noted that two driving voltages with the same amplitude and completely opposite phase can be used to simultaneously drive the dipole loudspeaker unit, achieving far-field radiation audio cancellation in the mid-low frequency range, thereby improving the audio directivity effect in the mid-low frequency range and thus achieving directional sound emission. The sound field directivity of the dipole loudspeaker unit and a conventional loudspeaker (producing only one sound source point) at a near-field of 10cm and a far-field of 70cm were tested, and the test results are shown in Figure 2. Referring to Figure 2, red curves a and b represent the signal strength diagrams of the dipole loudspeaker unit at a near-field of 10cm and a far-field of 70cm, respectively, and black curves c and d represent the signal strength diagrams of the conventional loudspeaker at a near-field of 10cm and a far-field of 70cm, respectively. The comparison shows that the dipole loudspeaker unit significantly improves the sound field directivity in the low-frequency range of 100-1000Hz.

[0049] The structure and type of the control unit are not limited. For example, the control unit may include a control chip, which may be an MCU (Microcontroller Unit) chip, an FPGA (Field Programmable Gate Array) chip, a DSP (Digital Signal Processor) chip, or an ARM (Advanced RISC Machines) chip. Of course, it may also include other types of chips.

[0050] The control parameters of the aforementioned dipole loudspeaker unit are not limited. For example, these parameters could be the amplitude, phase, delay time, or frequency of the driving signal. The control unit can adjust the intensity of the sound signal emitted by the dipole loudspeaker unit by controlling the amplitude of the driving signal, thereby adjusting the sound field of the dipole loudspeaker unit in a preset area. These control parameters can be obtained through time-domain or frequency-domain system identification methods of the electrical / acoustic field performance of the dipole loudspeaker unit, or calculated based on the physical parameters of the dipole loudspeaker unit. Specific details can be obtained through relevant technologies, which will not be elaborated here. The characteristics of these control parameters are not limited; they can be time-varying, linear, or nonlinear. These control parameters can also be updated through sensor monitoring.

[0051] Depending on the application scenario, the adjustments here can be to enhance or weaken the sound field of the preset area as a whole, or to enhance or weaken specific frequency bands, or to customize the amplitude, phase, and signal delay; there are no specific limitations.

[0052] The aforementioned preset area can be user-defined, manufacturer-defined, or the space can be divided into user area and preset area by device adaptive perception; no restrictions are imposed here.

[0053] This invention provides a loudspeaker assembly that forms a dipole sound source through dipole loudspeaker units, thereby achieving directional sound emission. Simultaneously, a control unit adjusts the control parameters of each dipole loudspeaker unit to further regulate the sound field of each dipole loudspeaker unit in a preset area, thereby further improving the directional sound emission effect and significantly enhancing the user experience.

[0054] The following provides the structures of three dipole loudspeaker units.

[0055] The first type, as shown in Figure 3, includes two independently arranged first speakers, whose driving signals are out of phase and have the same amplitude.

[0056] The first loudspeaker includes a first housing 211 and a first sound-emitting part 212. The first housing 211 is provided with a first receiving cavity. The first sound-emitting part 212 is disposed in the first housing 211 and divides the first receiving cavity into a first front sound cavity 213 and a first rear sound cavity 214. The first housing 211 is provided with a first sound-emitting hole. The first front sound cavity 213 communicates with the outside of the first housing 211 through the first sound-emitting hole. The first rear sound cavity 214 is closed. The first rear sound cavities 214 of the two first loudspeakers are arranged opposite to each other.

[0057] The aforementioned first speaker aperture can be configured as an arc, circle, ellipse, triangle, quadrilateral, or hexagon, etc. The number of first speaker apertures can be multiple, and their arrangement is not limited. The driving method of the first loudspeaker includes electrostatic driving, piezoelectric driving, or electromagnetic driving.

[0058] The two first loudspeakers described above have identical structures. In this structure, the two first loudspeakers are set up completely independently, and the first rear acoustic cavities of the two first loudspeakers are sealed. This reduces the mutual interference between the two first loudspeakers, which is beneficial for modeling and debugging, thereby reducing the design difficulty.

[0059] The second type, as shown in Figure 4, includes two connected second speakers, whose driving signals are out of phase and have the same amplitude.

[0060] The two connected second loudspeakers include a second housing 221 and two second sound-emitting parts 222. The second housing 221 is provided with a second receiving cavity. The two second sound-emitting parts 222 are disposed opposite to each other in the second housing 221 and divide the second receiving cavity into a second rear sound cavity 224 and two second front sound cavities 223. The second housing 221 is provided with a second sound-emitting hole. The two second front sound cavities 223 are respectively connected to the outside of the second housing 221 through the corresponding second sound-emitting hole. The second rear sound cavity 224 is closed.

[0061] The aforementioned second speaker aperture can be configured as an arc, circle, ellipse, triangle, quadrilateral, or hexagon, etc. The number of second speaker apertures can be multiple, and their arrangement is not limited. The driving method of this second loudspeaker includes electrostatic driving, piezoelectric driving, or electromagnetic driving.

[0062] In this structure, the two second loudspeakers share the same second rear acoustic cavity, which allows for a larger volume and dimensions of the rear acoustic cavity. Both the first and second structures are closed-cavity loudspeaker structures.

[0063] The third type, as shown in Figure 5, includes a third loudspeaker unit. The third loudspeaker includes a third housing 231 and a third sound-emitting part 232. A third receiving cavity is provided inside the third housing 231. The third sound-emitting part 232 is provided inside the third housing 231 and divides the third receiving cavity into a third front sound cavity 233 and a third rear sound cavity 234. The third housing 231 is provided with a third sound-emitting hole and a fourth sound-emitting hole. The third front sound cavity 233 is connected to the outside of the third housing 231 through the third sound-emitting hole, and the third rear sound cavity 234 is connected to the outside of the third housing 231 through the fourth sound-emitting hole.

[0064] The aforementioned third and fourth speaker holes can be configured as curved, circular, elliptical, triangular, quadrilateral, or hexagonal shapes, etc. The number of third and fourth speaker holes can be multiple, and their arrangement is not limited. The driving method of this third speaker includes electrostatic driving, piezoelectric driving, or electromagnetic driving.

[0065] The third type of structure is an open rear cavity loudspeaker structure. In this structure, the third rear acoustic cavity is not closed, and the sound waves emitted from the third rear acoustic cavity meet and superimpose with the sound waves emitted from the third front acoustic cavity, thus forming a dipole sound source.

[0066] In one or more embodiments, each of the multiple dipole loudspeaker units includes any one of two independently arranged first loudspeakers, two connected second loudspeakers, and a third loudspeaker; that is, the multiple dipole loudspeaker units of the above loudspeaker assembly have the same type of structure.

[0067] Alternatively, in a plurality of dipole loudspeaker units, some dipole loudspeaker units each include two independently arranged first loudspeakers or two connected second loudspeakers, while the remaining dipole loudspeaker units each include one third loudspeaker. That is, the plurality of dipole loudspeaker units in the above loudspeaker assembly are a combination of different types of structures.

[0068] In one or more embodiments, the speaker assembly is applied in a seat, with the mounting body being a headrest or neck pillow. The neck pillow can be external or integrated into the headrest of the seat; there is no limitation on this. External neck pillows are made of softer material and fit closer to the user's ears, which can improve near-field loudness and allows for easier adjustment to accommodate different heights, resulting in a better fit between the dipole speaker unit and the user's ear.

[0069] The specific shape of the headrest and neck pillow is not limited here; two structures are provided below.

[0070] The first type of headrest or neck pillow, as shown in Figures 20a and 22a, includes a straight strip-shaped body (the straight strip-shaped body of the headrest in Figure 20a is marked as 410, and the straight strip-shaped body of the neck pillow in Figure 22a is marked as 420). A dipole speaker unit is respectively provided in each of the two opposite ends of the straight strip-shaped body (Figures 20a and 22a are both illustrated as examples including two dipole speaker units, each dipole speaker unit including two first speakers 21).

[0071] The second type of headrest or neck pillow, as shown in Figures 20b and 22b, includes a curved body portion, which comprises a straight sub-part and two curved sub-parts (the straight sub-part of the headrest in Figure 20b is labeled 411 and the curved sub-part is labeled 412; the straight sub-part of the neck pillow in Figure 22b is labeled 421 and the curved sub-part is labeled 422). The two curved sub-parts are located at the two ends of the straight sub-part, and a dipole speaker unit is provided inside each of the two curved sub-parts (Figures 20b and 22b are illustrated with the example of two dipole speaker units, each dipole speaker unit including two first speakers 21). Combining Figures 20b and 20c, as well as Figures 22b and 22c, the curved headrest or neck pillow can partially surround the user's head. The dipole speaker units on both sides are positioned further forward, which improves the near-field loudness and enhances the sense of sound field immersion. However, when designing, issues such as visual obstruction and impact safety need to be considered, and the length of the two curved sub-sections should not be too long.

[0072] In one or more embodiments, the control parameters include any one or any combination of the amplitude, phase, delay time, and frequency of the driving signal. By controlling these parameters, the control unit can adjust any one or any combination of the amplitude, phase, delay time, and frequency of the sound signal emitted by each dipole loudspeaker unit, thereby adjusting the sound field of a preset area.

[0073] This invention also provides a seat, including the above-mentioned speaker assembly; the mounting body of the speaker assembly is the headrest or neck pillow of the seat.

[0074] Of course, the aforementioned mounting body can also be other parts of the seat, such as the top or sides of the seat; it can be set arbitrarily according to requirements.

[0075] The structure of several types of seats is explained in detail below.

[0076] Referring to Figure 6, the seat 4 includes a headrest 41, which is provided with two dipole speaker units arranged as shown in Figure 6. Each dipole speaker unit includes two first speakers 21. Combining Figures 7a and 7b, the four first speakers have the same sound-emitting surface and are very close to the user's head 5, which has a certain effect on improving the near-field loudness.

[0077] Referring to Figure 8, the seat 4 includes a headrest 41, which is provided with two dipole speaker units arranged as shown in Figure 8. Each dipole speaker unit includes two first speakers 21, which are located on different sides of the headrest. In conjunction with Figures 9a and 9b, the four first speakers 21 are very close to the user's head 5, which has a certain effect on improving the near-field loudness.

[0078] Referring to Figure 10, the seat 4 includes a headrest 41, which is provided with two dipole speaker units arranged as shown in Figure 10. Each dipole speaker unit includes two first speakers 21, and the sound-emitting surfaces of the two first speakers 21 are opposite (the sound-emitting surfaces of the first speaker 21 located above and the first speaker 21 located below in Figure 10 are opposite). Combining Figures 11a and 11b, the four first speakers 21 are very close to the user's head 5, which has a certain effect on improving the near-field loudness.

[0079] Referring to Figure 12, the seat 4 includes a headrest 41, which is provided with two dipole speaker units arranged as shown in Figure 12. Each dipole speaker unit includes two first speakers 21, which are respectively located on different sides of the headrest 41. Combining Figures 13a and 13b, the four first speakers 21 are very close to the user's head 5, which has a certain effect on improving the near-field loudness.

[0080] Referring to Figure 14, the seat 4 includes a headrest 41, which is provided with two dipole speaker units arranged as shown in Figure 14. Each dipole speaker unit includes two first speakers 21, which are respectively located on different sides of the headrest 41. Combining Figures 15a and 15b, the four first speakers 21 are very close to the user's head 5, which has a certain effect on improving the near-field loudness.

[0081] Referring to Figure 16, the seat 4 includes a headrest 41, which is provided with two dipole speaker units arranged as shown in Figure 16. The left dipole speaker unit includes two first speakers 21, and the right dipole speaker unit includes a third speaker 23. Combining Figures 17a and 17b, the two first speakers 21 and the third speaker 23 are very close to the user's head 5, which has a certain effect on improving the near-field loudness.

[0082] The application scenarios of the above-mentioned seats are not limited. For example, they can be used in the in-vehicle scenarios of fuel-powered cars or electric cars, or in non-in-vehicle scenarios such as airplanes, trains, cinemas, and gaming devices.

[0083] This seat features a speaker assembly that enables directional sound, significantly enhancing the user experience.

[0084] This invention also provides an electronic device, including the aforementioned seat. This electronic device can be found in any device or apparatus with a seat, such as a gasoline-powered car, an electric car, an airplane, a train, a cinema, or a gaming device. This electronic device has directional sound emission capabilities, which can significantly enhance the user experience.

[0085] To illustrate the application of electronic devices in a car, referring to Figure 18, the driver's seat in a four-seat car 6 integrates the aforementioned speaker assembly (the component labeled A in Figure 18 represents a dipole speaker unit). For example, multiple dipole speaker units can be installed in the headrest 41 shown in Figure 14 or the external neck pillow 42 shown in Figure 21 (both Figures 14 and 21 illustrate examples with two dipole speaker units, each including two first speakers 21), thereby achieving directional sound from the driver's position. Of course, the aforementioned speaker assembly can also be integrated into seats in other locations, enabling simultaneous regional playback of different audio content from different positions.

[0086] This invention also provides a control method for an electronic device, the electronic device including the aforementioned seat and detection unit, wherein the detection unit and the control unit of the speaker assembly disposed on the seat are electrically connected.

[0087] Referring to Figure 19, the control method of this electronic device includes:

[0088] S1, the detection unit detects the user's sitting posture and head position information on the seat.

[0089] S2. The control unit calls the pre-set control parameters of the dipole speaker unit based on the sitting posture information and head orientation information; or, the control unit sets the control parameters of the dipole speaker unit based on the sitting posture information and head orientation information.

[0090] S3. The control unit drives the dipole loudspeaker unit to emit sound in a directional manner according to the control parameters of the dipole loudspeaker unit.

[0091] This control method can further improve the directional sound effect and enhance the user experience.

[0092] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes in form and detail can be made without departing from the spirit and scope of the present invention. Any person skilled in the art can make various alterations and modifications without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A loudspeaker assembly, comprising: Install the main unit; Multiple dipole loudspeaker units; Each of the aforementioned dipole loudspeaker units is disposed inside the mounting body; The dipole loudspeaker unit is used to form a dipole sound source to achieve directional sound emission; A control unit, electrically connected to each of the dipole loudspeaker units, is used to control the control parameters of the dipole loudspeaker units to adjust the sound field of the dipole loudspeaker units in a preset area.

2. The loudspeaker assembly according to claim 1, wherein, The dipole loudspeaker unit includes two independently configured first loudspeakers, and the driving signals of the two first loudspeakers are out of phase and have the same amplitude. The first loudspeaker includes a first housing and a first sound-emitting part. The first housing has a first receiving cavity. The first sound-emitting part is disposed in the first housing and divides the first receiving cavity into a first front sound cavity and a first rear sound cavity. The first housing has a first sound-emitting hole. The first front sound cavity communicates with the outside of the first housing through the first sound-emitting hole. The first rear sound cavity is closed. The first rear acoustic cavities of the two first speakers are arranged opposite each other.

3. The loudspeaker assembly according to claim 1, wherein, The dipole loudspeaker unit includes two second loudspeakers connected in series, with the driving signals of the two second loudspeakers being out of phase and having the same amplitude; The two second loudspeakers connected together include a second housing and two second sound-emitting parts. The second housing is provided with a second receiving cavity. The two second sound-emitting parts are arranged opposite to each other in the second housing and divide the second receiving cavity into a second rear sound cavity and two second front sound cavities. The second housing is provided with a second sound-emitting hole. The two second front sound cavities are respectively connected to the outside of the second housing through the corresponding second sound-emitting hole. The second rear sound cavity is closed.

4. The loudspeaker assembly according to claim 1, wherein, The dipole loudspeaker unit includes a third loudspeaker; The third loudspeaker includes a third housing and a third sound-emitting part. The third housing has a third receiving cavity. The third sound-emitting part is disposed in the third housing and divides the third receiving cavity into a third front sound cavity and a third rear sound cavity. The third housing has a third sound-emitting hole and a fourth sound-emitting hole. The third front sound cavity is connected to the outside of the third housing through the third sound-emitting hole, and the third rear sound cavity is connected to the outside of the third housing through the fourth sound-emitting hole.

5. The loudspeaker assembly according to claim 1, wherein, Each of the aforementioned dipole loudspeaker units includes any one of the following: two independently arranged first loudspeakers, two connected second loudspeakers, and one third loudspeaker; Alternatively, among the plurality of dipole loudspeaker units, a portion of the dipole loudspeaker units each include two independently arranged first loudspeakers or two connected second loudspeakers, while the remaining dipole loudspeaker units each include a third loudspeaker.

6. The loudspeaker assembly of claim 1, wherein, The mounting body is a headrest or neck pillow.

7. The loudspeaker assembly of claim 6, wherein, The headrest or the neck pillow includes a straight strip-shaped body portion, and a dipole speaker unit is respectively disposed at each of the two opposite ends of the straight strip-shaped body portion; Alternatively, the headrest or the neck pillow may include a curved body portion, which includes a straight sub-part and two curved sub-parts. The two curved sub-parts are located at the two ends of the straight sub-part, and a dipole speaker unit is disposed inside each of the two curved sub-parts.

8. The loudspeaker assembly of claim 1, wherein, The control parameters include any one or any combination of the following: the amplitude of the driving signal, the phase of the driving signal, the delay time of the driving signal, and the frequency of the driving signal.

9. A seat comprising a speaker assembly according to any one of claims 1-8; wherein the mounting body of the speaker assembly is a headrest or neck pillow of the seat.

10. An electronic device comprising the seat as described in claim 9.

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