Loudspeaker assembly, seat and electronic equipment

Abstract

The invention relates to the technical field of acoustic-electric conversion, and discloses a loudspeaker assembly, a seat and electronic equipment, which can realize directional sound production of audio and are simple in structure. The loudspeaker assembly comprises a mounting body; a plurality of dipole speaker units; each dipole loudspeaker unit is arranged in the mounting body; the dipole loudspeaker unit is used for forming a dipole sound source so as to realize directional sound production; and the control unit is electrically connected with the dipole loudspeaker units and is used for controlling the control parameters of the dipole loudspeaker units so as to adjust the sound field of the dipole loudspeaker units in a preset area.

Description

Technical Field

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

[0002] With the continuous improvement of technology, advanced sound field control technologies such as directional sound technology and independent sound zone technology have been continuously developed in the fields of vehicles, etc. Among them, directional sound technology is used to play audio content in a designated area in the car, as well as to make private calls in the car, so as to ensure the privacy of the call content; independent sound zone technology is used to play audio in different areas in the car to meet the needs of passengers in different positions to enjoy different audio at the same time, or when some passengers enjoy audio and other passengers need to rest or talk, they do not disturb each other. Summary of the invention

[0003] The invention provides a loudspeaker assembly, a seat and an electronic device, which can realize audio directional sound generation and have a simple structure.

[0004] To achieve the above-mentioned object, the technical solution of the present invention provides a speaker assembly, comprising: a mounting body;

[0005] A plurality of dipole speaker units; each of the dipole speaker units is arranged inside the mounting body; the dipole speaker units are used to form a dipole sound source to achieve directional sound generation;

[0006] A control unit is electrically connected to each of the dipole speaker units and is used to control control parameters of the dipole speaker units to adjust the sound field of the dipole speaker units in a preset area.

[0007] According to some embodiments of the present invention, the dipole speaker unit comprises two independently arranged first speakers, and the driving signals of the two first speakers are in opposite phases and have the same amplitude;

[0008] The first speaker includes a first shell and a first sound-emitting part. A first receiving cavity is provided in the first shell. The first sound-emitting part is provided in the first shell and divides the first receiving cavity into a first front sound cavity and a first rear sound cavity. The first shell is provided with a first sound-emitting hole. The first front sound cavity is connected to the outside of the first shell through the first sound-emitting hole. The first rear sound cavity is closed.

[0009] The first rear acoustic cavities of the two first speakers are arranged opposite to each other.

[0010] According to some embodiments of the present invention, the dipole speaker unit comprises two second speakers connected to each other, and the driving signals of the two second speakers are in opposite phases and have the same amplitude;

[0011] The two second speakers connected to each other include a second shell and two second sound-emitting parts. A second receiving cavity is arranged in the second shell. The two second sound-emitting parts are relatively arranged in the second shell and divide the second receiving cavity into a second rear sound cavity and two second front sound cavities. The second shell is provided with a second sound speaker hole. The two second front sound cavities are connected to the outside of the second shell through the corresponding second sound speaker holes respectively; the second rear sound cavity is closed.

[0012] According to some embodiments of the present invention, the dipole speaker unit comprises a third speaker;

[0013] The third speaker includes a third shell and a third sound-emitting part. A third receiving cavity is arranged in the third shell. The third sound-emitting part is arranged in the third shell and divides the third receiving cavity into a third front sound cavity and a third rear sound cavity. The third shell is provided with a third sound hole and a fourth sound hole. The third front sound cavity is connected to the outside of the third shell through the third sound hole, and the third rear sound cavity is connected to the outside of the third shell through the fourth sound hole.

[0014] According to some embodiments of the present invention, the plurality of dipole speaker units each include any one of two independently arranged first speakers, two connectedly arranged second speakers, and one third speaker;

[0015] Alternatively, among the plurality of dipole speaker units, a portion of the dipole speaker units each include two independently arranged first speakers or two connectedly arranged second speakers, and the remaining portion of the dipole speaker units each include a third speaker.

[0016] According to some embodiments of the present invention, the mounting body is a headrest or a neck rest.

[0017] According to some embodiments of the present invention, the headrest or the neckrest comprises a straight bar-shaped body portion, and one of the dipole speaker units is respectively disposed in two opposite ends of the straight bar-shaped body portion;

[0018] Alternatively, the headrest or the neck rest comprises a curved main body portion, the curved main body portion comprises a straight strip sub-portion and two curved sub-portions, the two curved sub-portions are respectively located at two ends of the straight strip sub-portion, and a dipole speaker unit is respectively arranged inside the two curved sub-portions.

[0019] According to some embodiments of the present invention, the control parameter includes 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.

[0020] The technical solution of the present invention further provides a seat, comprising a speaker assembly as in the above embodiment; the mounting body of the speaker assembly is a headrest or a neck rest of the seat.

[0021] The technical solution of the present invention further provides an electronic device, comprising the seat as in the above embodiment.

[0022] The technical solution of the present invention provides a speaker assembly, a seat and an electronic device. The speaker assembly forms a dipole sound source through a dipole speaker unit, thereby realizing directional sound. At the same time, the control parameters of each dipole speaker unit are adjusted through a control unit, thereby further adjusting the sound field of each dipole speaker unit in a preset area, thereby further improving the effect of directional sound and greatly improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0024] Figure 1 A schematic structural diagram of a speaker assembly provided by an embodiment of the present invention;

[0025] Figure 2 A curve diagram of the directivity of a dipole sound field provided by an embodiment of the present invention;

[0026] Figure 3 A schematic structural diagram of a dipole loudspeaker unit provided by an embodiment of the present invention;

[0027] Figure 4 A schematic structural diagram of another dipole loudspeaker unit provided by an embodiment of the present invention;

[0028] Figure 5 A schematic structural diagram of another dipole loudspeaker unit provided by an embodiment of the present invention;

[0029] Figure 6 A schematic diagram of the structure of a seat provided by an embodiment of the present invention;

[0030] Figure 7a for Figure 6 A top view of Figure 7b A top view of the user's head;

[0031] Figure 8 A schematic diagram of the structure of another seat provided by an embodiment of the present invention;

[0032] Figure 9a for Figure 8 A top view of Figure 9b A top view of the user's head;

[0033] Fig.10 A structural schematic diagram of another seat provided by an embodiment of the present invention;

[0034] Fig.11a for Fig.10 A top view of Fig.11b A top view of the user's head;

[0035] Fig.12 A schematic diagram of the structure of another seat provided by an embodiment of the present invention;

[0036] Fig.13a for Fig.12 A top view of Fig.13b A top view of the user's head;

[0037] Fig.14 A schematic diagram of the structure of another seat provided by an embodiment of the present invention;

[0038] Fig.15a for Fig.14 A top view of Fig.15b A top view of the user's head;

[0039] Fig.16 A schematic diagram of the structure of another seat provided by an embodiment of the present invention;

[0040] Fig.17a for Fig.16 A top view of Fig.17b A top view of the user's head;

[0041] Fig.18 A schematic diagram of the structure of a car provided by an embodiment of the present invention;

[0042] Fig.19 A schematic diagram of a flow chart of a control method of an electronic device provided by an embodiment of the present invention;

[0043] Fig.20a is a top view of the straight strip main body, Fig.20b The main body is curved. Fig.20c A top view of the user's head;

[0044] Fig.21 A schematic diagram of the structure of a seat provided by an embodiment of the present invention;

[0045] Fig.22a for Fig.21 A top view of a mid-cervical pillow. Figure 22b for Fig.21Another top view of the mid-cervical pillow. Fig.22c A top view of the user's head. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical scheme and advantages of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the embodiments of the present invention, many technical details are provided to enable readers to better understand the present invention. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present invention can be implemented.

[0047] In the description of the embodiments of the present invention, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present invention, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0048] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0049] In the description of the embodiments of the present invention, technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., which indicate orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present invention.

[0050] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0051] In the drawings corresponding to the embodiments of the present invention, the thickness and area of ​​the layers are exaggerated for better understanding and ease of description.

[0052] In the description of the embodiments of the present invention, when a certain component “includes” another component, unless otherwise stated, other components are not excluded and other components may be further included.

[0053] An embodiment of the present invention provides a speaker assembly, referring to Figure 1 As shown, including:

[0054] Install the body 1;

[0055] A plurality of dipole speaker units 2; each dipole speaker unit is arranged inside the mounting body; the dipole speaker unit is used to form a dipole sound source to achieve directional sound emission;

[0056] The control unit 3 is electrically connected to each dipole speaker unit 2 and is used to control control parameters of the dipole speaker unit 2 to adjust the sound field of the dipole speaker unit 2 in a preset area.

[0057] The specific structure of the above-mentioned mounting body 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, a neckrest or a part of the seat of the vehicle.

[0058] The dipole sound source is two sound source points that are very close to each other, and their vibration amplitudes are the same, but the phases are opposite. The composite sound source formed by these two point sound sources is the dipole sound source. The specific structure of the dipole speaker unit is not limited, as long as it can generate a dipole sound source.

[0059] It should be noted that two driving voltages with the same amplitude and completely opposite phases can be used to drive the dipole speaker unit at the same time to achieve far-field radiation audio cancellation in the mid- and low-frequency bands, thereby improving the audio directivity effect of the mid- and low-frequency bands, and further achieving directional sound. The sound field directivity of the dipole speaker unit and the conventional speaker (generating only one sound source point) was tested in the near field 10cm and the far field 70cm, respectively, and the following results were obtained: Figure 2 The test results are shown in the figure. Figure 2 As shown, the red curves a and b respectively represent the signal strength diagrams of the dipole speaker unit at 10cm near field and 70cm far field, and the black curves c and d respectively represent the signal strength diagrams of the conventional speaker at 10cm near field and 70cm far field. By comparison, it can be concluded that the dipole speaker unit has a significant improvement in the directivity of the sound field in the low-frequency range of 100-1000Hz.

[0060] The structure and type of the above-mentioned 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, other types of chips may also be included.

[0061] The control parameters of the above-mentioned dipole speaker unit are not limited. For example, the control parameters can be the amplitude of the driving signal, the phase of the driving signal, the delay time of the driving signal or the frequency of the driving signal. The control unit can adjust the intensity of the sound signal emitted by the dipole speaker unit by controlling the amplitude of the driving signal, etc., thereby adjusting the sound field of the dipole speaker unit in a preset area. The control parameters can be obtained by performing a time domain or frequency domain system identification method on the electrical / acoustic field performance of the dipole speaker unit, or can be calculated based on the physical parameters of the dipole speaker unit. Specifically, they can be obtained through relevant technologies and will not be repeated here. The characteristics of the control parameters are not limited, and they can be time-varying, linear or nonlinear. The control parameters can also be updated through monitoring by sensors.

[0062] Depending on the application scenario, the adjustment here can be the overall enhancement or weakening of the sound field in the preset area, or the enhancement or weakening of the frequency band, or it can be a customized adjustment of the amplitude, phase and signal delay, etc.; there is no specific limitation.

[0063] The above preset areas can be user-defined, manufacturer-defined, or the device adaptively perceives the space to be divided into user areas and preset areas, which is not limited here.

[0064] An embodiment of the present invention provides a speaker assembly, which forms a dipole sound source through a dipole speaker unit to achieve directional sound. At the same time, a control unit is used to adjust the control parameters of each dipole speaker unit to further adjust the sound field of each dipole speaker unit in a preset area, thereby further improving the effect of directional sound and greatly improving the user experience.

[0065] The structures of three dipole speaker units are provided below.

[0066] The first one, reference Figure 3 As shown, the dipole speaker unit 2 includes two independently arranged first speakers, and the driving signals of the two first speakers are in opposite phases and have the same amplitude.

[0067] The first speaker includes a first shell 211 and a first sound-emitting part 212. A first receiving cavity is arranged in the first shell 211. The first sound-emitting part 212 is arranged in the first shell 211 and divides the first receiving cavity into a first front sound cavity 213 and a first rear sound cavity 214. The first shell 211 is provided with a first speaker hole. The first front sound cavity 213 is connected to the outside of the first shell 211 through the first speaker hole; the first rear sound cavity 214 is closed; and the first rear sound cavities 214 of the two first speakers are arranged opposite to each other.

[0068] The first speaker hole can be configured to be arc, circular, elliptical, triangular, quadrilateral or hexagonal, etc. The number of the first speaker holes can be multiple, and the arrangement thereof is not limited. The driving mode of the first speaker includes electrostatic driving, piezoelectric driving or electromagnetic driving.

[0069] The structures of the two first speakers are completely identical. In this structure, the two first speakers are completely independently arranged, and the first rear sound cavities of the two first speakers are closed, so that the mutual interference between the two first speakers is small, which is conducive to modeling and debugging, thereby reducing the difficulty of design.

[0070] The second one, reference Figure 4 As shown, the dipole speaker unit 2 includes two second speakers which are connected to each other, and the driving signals of the two second speakers are in opposite phases and have the same amplitude.

[0071] The two second speakers connected to each other include a second shell 221 and two second sound-emitting parts 222. A second receiving cavity is arranged in the second shell 221. The two second sound-emitting parts 222 are relatively arranged in the second shell 221 and divide the second receiving cavity into a second rear sound cavity 224 and two second front sound cavities 223. The second shell 221 is provided with a second speaker hole. The two second front sound cavities 223 are connected to the outside of the second shell 221 through the corresponding second speaker holes respectively; the second rear sound cavity 224 is closed.

[0072] The second speaker hole can be configured to be arc-shaped, circular, elliptical, triangular, quadrilateral or hexagonal, etc. The number of the second speaker holes can be multiple, and the arrangement thereof is not limited. The driving mode of the second speaker includes electrostatic driving, piezoelectric driving or electromagnetic driving.

[0073] In this structure, the two second loudspeakers share the same second rear acoustic cavity, so that the volume of the rear acoustic cavity is larger and the size of the rear acoustic cavity can be set larger. Both the first structure and the second structure belong to closed-cavity loudspeaker structures.

[0074] The third type, reference Figure 5 As shown, the dipole speaker unit includes a third speaker;

[0075] The third speaker includes a third shell 231 and a third sound-emitting part 232. A third receiving cavity is arranged in the third shell 231. The third sound-emitting part 232 is arranged in the third shell 231 and divides the third receiving cavity into a third front sound cavity 233 and a third rear sound cavity 234. The third shell 231 is provided with a third sound hole and a fourth sound hole. The third front sound cavity 233 is connected to the outside of the third shell 231 through the third sound hole, and the third rear sound cavity 234 is connected to the outside of the third shell 231 through the fourth sound hole.

[0076] The third and fourth speaker holes can be arranged in arc, circle, ellipse, triangle, quadrilateral or hexagonal shapes. The number of the third and fourth speaker holes can be multiple, and the arrangement is not limited. The driving mode of the third speaker includes electrostatic driving, piezoelectric driving or electromagnetic driving.

[0077] The third structure belongs to the open rear cavity speaker structure. In this structure, the third rear cavity is not closed, and the sound waves emitted by the third rear cavity meet and overlap with the sound waves emitted by the third front cavity, thereby forming a dipole sound source.

[0078] In one or more embodiments, the multiple dipole speaker units each include any one of two independently arranged first speakers, two connectedly arranged second speakers, and one third speaker; that is, the multiple dipole speaker units of the above-mentioned speaker assembly are of the same type of structure.

[0079] Alternatively, among the plurality of dipole speaker units, a portion of the dipole speaker units respectively include two independently arranged first speakers or two connectedly arranged second speakers, and the remaining portion of the dipole speaker units respectively include a third speaker. That is, the plurality of dipole speaker units of the speaker assembly are a combination of different types of structures.

[0080] In one or more embodiments, the speaker assembly is applied to a seat, and the mounting body is a headrest or a neck pillow, and the neck pillow can be an external hanging type, or integrated on the headrest of the seat, which is not limited here. The external hanging neck pillow is made of a softer material and is closer to the user's ear, which has a certain effect on improving the near-field loudness, and can be more conveniently adjusted according to different heights of people, so that the dipole speaker unit fits better with the human ear.

[0081] The specific shapes of the headrest and neck pillow are not limited here, and two structures are provided below.

[0082] The first type of headrest or neck pillow, refer to Fig.20a and Fig.22a As shown, the headrest or neck pillow includes a straight strip-shaped body portion ( Fig.20aThe straight strip body of the headrest is marked as 410. Fig.22a The straight strip body of the neck pillow is marked as 420, and a dipole speaker unit ( Fig.20a and Fig.22a The illustration is made by taking an example that two dipole speaker units are included, and each dipole speaker unit includes two first speakers 21 ).

[0083] The second type of headrest or neck pillow, refer to Fig.20b and Figure 22b As shown, the headrest or neck pillow includes a curved main body portion, which includes a straight sub-portion and two curved sub-portions ( Fig.20b The straight sub-portion of the headrest is marked as 411, and the curved sub-portion is marked as 412. Figure 22b The straight strip sub-portion of the neck pillow is marked as 421, and the curved sub-portion is marked as 422. The two curved sub-portions are respectively located at the two ends of the straight strip sub-portion, and a dipole speaker unit is respectively arranged inside the two curved sub-portions ( Fig.20b and Figure 22b The illustration is made by taking two dipole speaker units, each of which includes two first speakers 21 as an example). Fig.20b and Fig.20c , and combined Figure 22b and Fig.22c As shown in the figure, the curved headrest or neck pillow can partially surround the user's head 5. The dipole speaker units on both sides are closer to the front, which has a certain effect on improving the near-field loudness and making the sound field more surround. Issues such as line of sight obstruction and impact safety need to be considered during the design. The length of the two curved sub-parts cannot be too long.

[0084] In one or more embodiments, 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. 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 speaker unit, thereby adjusting the sound field of the preset area.

[0085] An embodiment of the present invention further provides a seat, comprising the above-mentioned speaker assembly; the mounting body of the speaker assembly is a headrest or a neck rest of the seat.

[0086] Of course, the above-mentioned mounting body can also be other parts of the seat, such as: the top position or both sides of the seat, etc.; it can be set arbitrarily according to needs.

[0087] The structures of several types of seats are described in detail below.

[0088] refer to Figure 6As shown, the seat 4 includes a headrest 41, and the headrest 41 is provided with Figure 6 The two dipole speaker units are arranged as shown, each of which includes two first speakers 21, combined with Figure 7a and Figure 7b The sound output surfaces of the four first speakers are the same and very close to the user's head 5, which has a certain effect on improving the near-field loudness.

[0089] refer to Figure 8 As shown, the seat 4 includes a headrest 41, and the headrest 41 is provided with Figure 8 The two dipole speaker units are arranged as shown, each of which includes two first speakers 21, and the two first speakers 21 are arranged on different sides of the headrest; Figure 9a and Figure 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.

[0090] refer to Fig.10 As shown, the seat 4 includes a headrest 41, and the headrest 41 is provided with Fig.10 The two dipole speaker units are arranged as shown, each of which includes two first speakers 21, and the sound emitting surfaces of the two first speakers 21 are opposite ( Fig.10 The first speaker 21 located at the top and the first speaker 21 located at the bottom have opposite sound emitting surfaces); combined Fig.11a and Fig.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.

[0091] refer to Fig.12 As shown, the seat 4 includes a headrest 41, and the headrest 41 is provided with Fig.12 The two dipole speaker units are arranged as shown, each of which includes two first speakers 21, and the two first speakers 21 are respectively arranged on different sides of the headrest 41; Fig.13a and Fig.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.

[0092] refer to Fig.14 As shown, the seat 4 includes a headrest 41, and the headrest 41 is provided with Fig.14 The two dipole speaker units are arranged as shown, each of which includes two first speakers 21, and the two first speakers 21 are respectively arranged on different sides of the headrest 41; Fig.15a and Fig.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.

[0093] refer to Fig.16 As shown, the seat 4 includes a headrest 41, and the headrest 41 is provided with Fig.16 The two dipole speaker units are arranged as shown, the left dipole speaker unit includes two first speakers 21, and the right dipole speaker unit includes a third speaker 23; Fig.17a and Fig.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.

[0094] The application scenarios of the above-mentioned seats are not limited. For example, they can be used in vehicle-mounted scenarios of fuel vehicles or electric vehicles, or can also be used in non-vehicle scenarios such as airplanes, trains, theaters, and game equipment.

[0095] The seat is equipped with a speaker component to achieve directional sound, greatly improving the user experience.

[0096] The embodiment of the present invention further provides an electronic device, including the above-mentioned seat. The electronic device can be in any device or apparatus with a seat, such as a fuel vehicle, an electric vehicle, an airplane, a train, a cinema, a gaming device, etc. The electronic device has a directional sound emission function, which can greatly improve the user experience.

[0097] For a specific application of electronic equipment in automobiles, refer to Fig.18 As shown, the main driver's seat in the four-seat car 6 is integrated with the above-mentioned speaker assembly ( Fig.18 The component marked as A in the figure represents a dipole speaker unit), for example, it can be Fig.14 The headrest 41 shown or Fig.21 The external neck pillow 42 shown in the figure is provided with a plurality of dipole speaker units ( Fig.14 and Fig.21 The two dipole speaker units are used as an example, and each dipole speaker unit includes two first speakers 21, so as to realize directional sound emission at the main driving position. Of course, seats at other positions can also be integrated with the above speaker assembly, so as to realize regional playback of different audio content at different positions at the same time.

[0098] An embodiment of the present invention further provides a method for controlling an electronic device. The electronic device includes the above-mentioned seat and a detection unit. The detection unit is electrically connected to a control unit of a speaker assembly arranged on the seat.

[0099] refer to Fig.19 As shown, the control method of the electronic device includes:

[0100] S1. A detection unit detects sitting posture information and head position information of a user on a seat.

[0101] S2. The control unit calls the preset control parameters of the dipole speaker unit according to the sitting posture information and the head orientation information; or the control unit sets the control parameters of the dipole speaker unit according to the sitting posture information and the head orientation information.

[0102] S3. The control unit drives the dipole speaker unit to directional sound according to the control parameters of the dipole speaker unit.

[0103] This control method can further enhance the directional sound effect and improve the user experience.

[0104] It can be understood by those skilled in the art that the above-mentioned embodiments are specific examples for realizing the present invention, and in practical applications, various changes can be made to them in form and details without departing from the spirit and scope of the present invention. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so the protection scope of the present invention shall be subject to the scope defined in the claims.

Claims

1. A speaker assembly, characterized in that: include: Install the body; Multiple dipole speaker units; Each of the dipole speaker units is arranged inside the mounting body; The dipole speaker unit is used to form a dipole sound source to achieve directional sound generation; A control unit is electrically connected to each of the dipole speaker units and is used to control control parameters of the dipole speaker units to adjust the sound field of the dipole speaker units in a preset area.

2. The loudspeaker assembly according to claim 1, characterized in that The dipole speaker unit comprises two first speakers which are independently arranged, and the driving signals of the two first speakers are in opposite phases and have the same amplitude; The first speaker includes a first shell and a first sound-emitting part. A first receiving cavity is provided in the first shell. The first sound-emitting part is provided in the first shell and divides the first receiving cavity into a first front sound cavity and a first rear sound cavity. The first shell is provided with a first sound-emitting hole. The first front sound cavity is connected to the outside of the first shell 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 to each other.

3. The loudspeaker assembly according to claim 1, characterized in that The dipole speaker unit comprises two second speakers connected to each other, and the driving signals of the two second speakers are in opposite phases and have the same amplitude; The two second speakers connected to each other include a second shell and two second sound-emitting parts. A second receiving cavity is arranged in the second shell. The two second sound-emitting parts are relatively arranged in the second shell and divide the second receiving cavity into a second rear sound cavity and two second front sound cavities. The second shell is provided with a second sound speaker hole. The two second front sound cavities are connected to the outside of the second shell through the corresponding second sound speaker holes respectively; the second rear sound cavity is closed.

4. The loudspeaker assembly according to claim 1, characterized in that The dipole speaker unit includes a third speaker; The third speaker includes a third shell and a third sound-emitting part. A third receiving cavity is arranged in the third shell. The third sound-emitting part is arranged in the third shell and divides the third receiving cavity into a third front sound cavity and a third rear sound cavity. The third shell is provided with a third sound hole and a fourth sound hole. The third front sound cavity is connected to the outside of the third shell through the third sound hole, and the third rear sound cavity is connected to the outside of the third shell through the fourth sound hole.

5. The loudspeaker assembly according to claim 1, characterized in that The plurality of dipole speaker units each include any one of two independently arranged first speakers, two connectedly arranged second speakers, and one third speaker; Alternatively, among the plurality of dipole speaker units, a portion of the dipole speaker units each include two independently arranged first speakers or two connectedly arranged second speakers, and the remaining portion of the dipole speaker units each include a third speaker.

6. The loudspeaker assembly according to claim 1, characterized in that The mounting body is a headrest or a neckrest.

7. The loudspeaker assembly according to claim 6, characterized in that The headrest or the neckrest comprises a straight bar-shaped body portion, and one of the dipole speaker units is respectively arranged at two opposite ends of the straight bar-shaped body portion; Alternatively, the headrest or the neck rest comprises a curved main body portion, the curved main body portion comprises a straight strip sub-portion and two curved sub-portions, the two curved sub-portions are respectively located at two ends of the straight strip sub-portion, and a dipole speaker unit is respectively arranged inside the two curved sub-portions.

8. The loudspeaker assembly according to claim 1, characterized in that The control parameter includes 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.

9. A seat, characterized in that: It comprises the speaker assembly according to any one of claims 1 to 8; the mounting body of the speaker assembly is the headrest or neck pillow of the seat.

10. An electronic device, characterized in that: The invention comprises the seat described in claim 9.

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