An audio array and an audio device

Abstract

An audio array and audio device, belonging to the field of audio processing technology, includes: a carrier plate; multiple microphones disposed on the carrier plate; at least one speaker disposed on the carrier plate; and multiple microphones arranged around the at least one speaker. By arranging multiple microphones around the speaker, a highly integrated acoustic structure is formed on the same carrier plate, creating a fixed and predictable acoustic geometry between the microphones and the speaker. This geometry provides a structural basis for improving beamforming performance; a specifically arranged multi-microphone array can improve pickup directivity and speech intelligibility, supporting flexible division and allocation of pickup areas, thereby ensuring stable pickup quality in complex acoustic environments. Furthermore, the integrated and compact design reduces the number of devices and deployment density, and simplifies installation and acoustic calibration processes. In addition, this architecture provides a hardware foundation for achieving coordinated control of pickup and amplification, contributing to a stable and uniformly covered audio experience.

Description

Technical Field

[0001] This application relates to the field of audio processing technology, and more particularly to an audio array and audio device. Background Technology

[0002] Currently, ceiling-mounted solutions for audio and video conferencing systems are widely favored by users due to their concealed wiring and seamless installation. However, for medium to large conference room spaces, this solution typically requires a dense, distributed deployment because the optimal listening area for ceiling speakers is usually only a fixed circular area with a radius of 1.5 to 2 meters below, covering an angle of approximately 90°. This dense deployment is not only costly but also involves complex installation and commissioning processes. Especially for intelligent deployments and microphone / camera linkage functions, multiple microphone arrays and speakers are needed for device positioning and calibration. Many customers' ceiling structures are not conducive to deploying too many devices, resulting in insufficient sound pickup and amplification coverage, severely degraded sound quality, and a negative impact on user experience.

[0003] Currently, conference room audio systems typically employ a separate arrangement of microphones and speakers. This separate design means that the relative positions of the microphones and speakers are not fixed, requiring tedious acoustic calibration and delay adjustments after installation to achieve accurate beamforming and sound source localization. This is especially challenging and time-consuming in scenarios involving multiple devices working together. Furthermore, the separate layout limits the optimization and integration of the equipment's structure, making it difficult to achieve a compact and efficient acoustic design, and hindering the achievement of wide-range, uniform sound pickup and amplification coverage in limited spaces such as ceilings.

[0004] Although there have been some attempts to combine microphones and speakers in the same device, their layouts are mostly simple side-by-side or separate modules, failing to achieve true integrated optimization in acoustic structure, signal coordination, and installation calibration, thus failing to fundamentally solve the aforementioned problems.

[0005] Therefore, it is necessary to propose an acoustic structure that improves the overall audio performance and deployment convenience of the system through deep integration of microphones and speakers in physical layout and acoustic design. Summary of the Invention

[0006] An audio array and audio device are provided to solve the technical problems of poor audio performance and inconvenient deployment of current acoustic structures.

[0007] In a first aspect, an audio array is provided, comprising: Support plate; Multiple microphones are mounted on the carrier plate; At least one speaker is mounted on the support plate; The plurality of microphones are arranged around the at least one speaker.

[0008] Secondly, an audio array is provided, comprising: Support plate; Multiple microphones are mounted on the carrier plate; Multiple speakers are mounted on the support plate; The plurality of speakers are arranged around the plurality of microphones.

[0009] Thirdly, an audio device is provided, comprising a processor and an audio array as described in any of the preceding aspects, wherein the processor is electrically connected to a plurality of microphones and at least one speaker in the audio array.

[0010] In this application, the microphone array can be mounted around the speaker on the same carrier plate. On the one hand, this improves the directionality of sound pickup and speech clarity, while supporting flexible division and dynamic allocation of the pickup area. On the other hand, it enables a highly integrated integrated sound pickup and amplification device, reducing deployment density. Furthermore, this highly integrated audio array is easy to install and debug, reducing deployment costs. In addition, this audio array can provide users with an integrated control experience for sound pickup and playback.

[0011] Furthermore, this application utilizes a highly integrated acoustic structure formed by arranging multiple microphones around the perimeter of the speaker on a single mounting plate. This solution establishes a fixed and predictable acoustic geometry between the microphones and the speaker. This geometry provides a structural foundation for improving the beamforming performance of the audio array. The specifically arranged multi-microphone array enhances pickup directivity and speech intelligibility, supports flexible division and dynamic allocation of pickup areas, and thus stably ensures pickup quality in complex acoustic environments. Simultaneously, the integrated and compact design not only reduces the number of devices and deployment density but also significantly simplifies installation and acoustic calibration processes, reducing system complexity and overall deployment costs. Moreover, this integrated architecture provides the hardware foundation for coordinated control of pickup and amplification, contributing to a more stable and uniformly covered audio experience in various conference scenarios. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0014] Figure 1 Structural example of an audio array (concentric circle array) provided in an exemplary embodiment of this disclosure Figure 1 ; Figure 2 Structural examples of audio arrays (spiral arrays) provided in exemplary embodiments of this disclosure Figure 1 ; Figure 3 Structural examples of audio arrays (spiral arrays) provided in exemplary embodiments of this disclosure Figure 2 ; Figure 4 Structural examples of audio arrays (spiral arrays) provided in exemplary embodiments of this disclosure Figure 3 ; Figure 5 Structural example of an audio array (concentric circle array) provided in an exemplary embodiment of this disclosure Figure 2 ; Figure 6A Structural examples of audio arrays (spiral arrays) provided in exemplary embodiments of this disclosure Figure 4 ; Figure 6B Structural example of an audio array (concentric circle array) provided in an exemplary embodiment of this disclosure Figure 3 ; Figure 6C Structural examples of audio arrays (spiral arrays) provided in exemplary embodiments of this disclosure Figure 5 ; Figure 7 A simulation diagram of the least squares method provided as an exemplary embodiment of this disclosure; Figure 8 A simulation diagram illustrating a general beamforming algorithm provided as an exemplary embodiment of this disclosure; Figure 9 This is a structural example diagram of an apparatus provided as an exemplary embodiment of the present disclosure.

[0015] Figure label: 10. Support plate; 11. Microphone; 12. Speaker. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0017] In the embodiments of this application, "at least one" refers to one or more; "multiple" refers to two or more. In the description of this application, the terms "first," "second," "third," etc., are used only for the purpose of distinguishing descriptions and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying order.

[0018] References such as “one embodiment” or “some embodiments” described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the terms “comprising,” “including,” “having,” and variations thereof, in this specification, mean “including but not limited to,” unless otherwise specifically emphasized.

[0019] It should be noted that in the embodiments of this application, "and / or" describes the relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. In addition, the character " / ", unless otherwise specified, generally indicates that the associated objects before and after it are in an "or" relationship.

[0020] It should be noted that in the embodiments of this application, "connection" can be understood as electrical connection. The connection between two electrical components can be a direct or indirect connection between the two electrical components. For example, the connection between A and B can be a direct connection between A and B, or an indirect connection between A and B through one or more other electrical components.

[0021] In related technologies, although desktop conference phones or smart speakers integrate microphone arrays and speakers into one unit, they usually have a small number of microphones (6 to 16), limited sound pickup capabilities, and most speakers are single speakers, which cannot achieve directional sound amplification, making it difficult to meet the high-quality sound pickup and amplification needs of medium and large conference rooms.

[0022] Furthermore, even in integrated devices like desktop conference phones or smart speakers, the layout of microphone arrays and speakers typically follows a "functional partitioning" design approach—microphones and speakers are structurally placed as independent modules within the same housing, rather than being designed collaboratively as an acoustic whole. This physical separation results in inconsistent acoustic paths within the device, with the relative positions of transducers varying depending on the product form. This forces advanced audio algorithms such as echo cancellation and beamforming to rely on complex post-calibration and dynamic adaptation, increasing signal processing overhead and limiting the theoretical upper limit of audio performance. The industry has long been accustomed to compensating for physical structural deficiencies by increasing computing power and algorithm complexity, failing to fully recognize that the fundamental problem restricting system performance and deployment convenience may lie in the lack of a fixed, optimal geometric configuration between microphones and speakers.

[0023] Against this backdrop, the inventors of this application recognized that the core limitation of the prior art lies not simply in the number of pickup units or the power of the speaker, but in the failure to perform topology optimization of the microphone and speaker as a complete acoustic system from the perspective of acoustic principles. The truly critical and unexplored problem lies in how to fundamentally solidify the acoustic relationship between the microphone and speaker through a deterministic physical structure, thereby providing a stable and predictable hardware foundation for high-performance audio algorithms, while simultaneously reducing deployment density and simplifying installation and debugging.

[0024] In view of this, embodiments of this application provide an audio array designed to solidify the acoustic relationship between the microphone and the speaker, thereby providing a stable and predictable hardware foundation for high-performance audio algorithms, while simultaneously reducing deployment density and simplifying installation and debugging.

[0025] Reference Figure 1 The present disclosure provides an example of the structure of an audio array, which may include: a carrier plate 10, a plurality of microphones 11 disposed on the carrier plate, and at least one speaker 12 disposed on the carrier plate. The plurality of microphones 11 are arranged around the at least one speaker 12. The microphones 11 are used to support sound pickup functionality. The speaker 12 is used to support sound amplification functionality (or audio playback functionality).

[0026] For example, such as Figure 1 Two concentric circles of microphones 11 are arranged on the support plate 10, and the two circles of microphones 11 are arranged around the central speaker 12.

[0027] The solution provided in this application achieves superior acoustic performance by integrating multiple microphones 11 around at least one speaker 12. Specifically, this structural design allows the microphone 11 array to utilize its beamforming technology to effectively suppress acoustic interference (such as echo and howling) from the direction of the speaker 12 during sound pickup, thereby improving sound pickup clarity. Simultaneously, the centrally located speaker 12 provides a more uniform and wider sound field coverage, ensuring high-quality amplification.

[0028] Furthermore, by arranging multiple microphones 11 around at least one speaker 12 in a unified manner, a high degree of integration between the microphone array 11 and the speaker 12 can be achieved. This structure allows the audio array to be deployed as a single unit, effectively solving the problem that medium to large conference rooms cannot densely deploy multiple independent devices due to ceiling structure limitations. Moreover, by integrating sound pickup and amplification functions into a single array, the number of devices required for deployment is significantly reduced, simplifying the installation and commissioning process, while also providing a clean, aesthetically pleasing, and immersive experience.

[0029] In some embodiments, the plurality of microphones 11 are arranged in a concentric circle array.

[0030] For example, such as Figure 1 The microphone array 11 adopts a double-ring circular array. For example, the inner circle radius is 0.05m, the outer circle radius is 0.1m, and the number of microphones 11 in each circle is 16.

[0031] The solution provided in this application, through the design of large and small circles within concentric circles, ensures good constant beam performance at both low and high frequencies. The small circle helps to eliminate and suppress beam grating lobes at high frequencies, while the large circle can be used to narrow the main lobe width at low frequencies to improve the beam's anti-reverberation capability.

[0032] In some embodiments, the plurality of microphones 11 are arranged in a spiral array.

[0033] For example, refer to Figure 2-4 Multiple microphones are arranged in a spiral array.

[0034] In this method, concentric circles / spirals can achieve non-uniform but regular spatial sampling, providing different effective apertures at different radial scales. Specifically, the sampling spacing of the spiral array varies with the radius, reducing grating aliasing caused by periodic spatial repetition and improving sidelobe suppression performance across the entire frequency band. Concentric multi-turn designs offer multi-scale integration, facilitating the use of multi-frequency optimization (such as least squares / convex optimization) to achieve frequency-invariant or controlled beamwidths. Furthermore, compared to uniform circular arrays, helical or multi-turn concentric designs more easily achieve constant beamwidth and deeper sidelobe suppression across the entire operating frequency band. Through nonlinear / radial sampling of concentric circles or helices, wide-bandwidth, low grating lobe, and directionally consistent beam control can be achieved.

[0035] In some embodiments, reference is still made to Figure 1 When the plurality of microphones 11 are arranged in a concentric circle array, the at least one speaker 12 is located at the center of the concentric circle array.

[0036] For example, the central speaker 12 is a single speaker 12 with a wide coverage angle. Alternatively, multiple speakers 12 can be used together to achieve a wide coverage angle.

[0037] The diagram shows a central speaker 12 as an example, but there can be multiple central speakers 12. For instance, a ring of speakers 12 can be arranged around the center, without limitation.

[0038] Since the low-frequency extension of a speaker is negatively correlated with its size, a speaker with a larger radius has a lower low-frequency extension. For example, taking a single speaker 12 at the center as an example, considering the radius distribution of the dual-ring microphone array, the radius of the single speaker 12 can be set to 0.04m. The low-frequency extension of this size speaker 12 can reach 80Hz. Because the low-frequency extension capability of a speaker is crucial for sound quality (especially in music or movie scenarios), the low-frequency speaker of this embodiment has better low-frequency reproduction capability, ensuring good low-frequency sound quality for the audio array. Simultaneously, the maximum coverage angle of the speaker 12 in the central region can reach 160°, ensuring a wider playback coverage range.

[0039] In some embodiments, reference is still made to Figure 2-4 When the plurality of microphones 11 are arranged in a spiral array, the at least one speaker 12 is located at the geometric center of the spiral array.

[0040] In one or more embodiments of this application, at least one speaker 12 located at the geometric center of the spiral array or at the center of the concentric circle array may be referred to as the center speaker 12. Similarly, a plurality of microphones 11 located at the geometric center of the spiral array or at the center of the concentric circle array may be referred to as the center microphones 11.

[0041] On the one hand, the central location ensures a regular distribution of the propagation distance and angle from the loudspeaker to the ring microphone, simplifying the acoustic model, facilitating analytical processing with ring / radial filters, reducing estimation complexity, and improving robustness. On the other hand, for sound reinforcement, the radiation from the central loudspeaker more evenly covers the central area, enabling more stable directional amplification / pickup linkage when combined with the microphone ring. Furthermore, the central loudspeaker / loudspeaker array produces a more uniform sound field radiation, achieving a more uniform sound pressure distribution at the same loudspeaker power, reducing the probability of local over- or under-coverage.

[0042] In some embodiments, users can selectively enable directional area amplification and omnidirectional amplification playback functions.

[0043] In some embodiments, the number of the plurality of microphones 11 ranges from 32 to 128.

[0044] According to array theory, spatial sampling density is proportional to the controllable bandwidth / sidelobe level. 32–128 microphones provide sufficient degrees of freedom to achieve narrow or constant bandwidth, excellent white noise gain, and high directivity. Furthermore, a larger number of microphones can improve spatial sampling resolution and expand the effective pickup radius.

[0045] In some embodiments, the maximum coverage angle of the at least one speaker 12 ranges from 120° to 160°.

[0046] The speaker's maximum coverage angle is 120°~160°, which means that the speaker can form a wide-angle energy distribution, making up for the lack of coverage area of ​​the speaker. Combined with a microphone array, the optimal listening radius can be extended to 3~5m, reducing the equipment density requirements.

[0047] In the solution provided in this application embodiment, by setting a reasonable number of microphones and wide-coverage-angle speakers, the directional area pickup capability of the audio array can be improved. Furthermore, this design allows for flexible allocation of area size, ensuring high-quality sound pickup. It is evident that combining more microphones with wide-coverage-angle speakers allows for space reuse in both the pickup and amplification areas, reducing the total number of devices.

[0048] For example, the above Figures 1-4 The audio array structure shown can be referred to as the basic version. This application also provides an upgraded version of the audio array, which is described below.

[0049] In some embodiments, the concentric circle array structure further includes a plurality of loudspeakers 12 arranged along a predetermined concentric circle trajectory, wherein the concentric circle trajectory in which the plurality of loudspeakers 12 are located has the same geometric center as the concentric circle trajectory in which the plurality of microphones 11 are located; the concentric circle array structure includes multiple layers of concentric circles; wherein the multiple layers of concentric circles include M layers of concentric circles in which the plurality of loudspeakers 12 are arranged and N layers of concentric circles in which the plurality of microphones 11 are arranged, where M and N are both positive integers.

[0050] This structure is another type of concentric circle array. (Reference) Figure 5 The concentric circle array structure includes a plurality of microphones 11 arranged along a predetermined concentric circle trajectory, and a plurality of speakers 12 arranged along a predetermined concentric circle trajectory. The concentric circle array structure may include multiple layers of concentric circles. In this concentric circle array structure, the geometric center of the concentric circle trajectory where the plurality of speakers 12 are located is the same as the geometric center of the concentric circle trajectory where the plurality of microphones 11 are located. That is, the concentric circles where the speakers 12 are located and the concentric circles where the microphones 11 are located are arranged around the same center.

[0051] The multi-layered concentric circles include M layers of concentric circles on which the plurality of speakers 12 are arranged, and N layers of concentric circles on which the plurality of microphones 11 are arranged, where M and N are both positive integers. For example, Figure 5 In the center, microphones 11 are arranged on the first, third, fourth, sixth, seventh, ninth, and eleventh concentric circles from the inside out, totaling seven circles of microphones 11. Speakers 12 are arranged on the second, fifth, eighth, and tenth concentric circles, totaling four circles of speakers 12. The audio array includes a central speaker 12, four layers of speakers 12, and seven layers of microphones 11. That is, M is 4 and N is 7.

[0052] For example, the radii of the 7-ring microphone array 11, from smallest to largest, are 0.021m, 0.044m, 0.090m, 0.170m, 0.065m, 0.130m, and 0.255m. For example, the radii of the concentric circles of the 4-ring speaker 12 are 0.0325m, 0.0775m, 0.15m, and 0.210m, respectively. For example, the outermost concentric circle speaker 12 uses a larger speaker unit (large speaker), with a radius of approximately 0.03~0.04m, while the remaining three inner concentric circles use smaller speaker units (small speakers), with a radius of approximately 0.01~0.03m.

[0053] For example, there are 11 microphones in 7 rings, totaling 127.

[0054] Alternatively, the spiral array structure may further include a plurality of loudspeakers 12 arranged along a predetermined spiral trajectory, wherein the spiral trajectory of the plurality of loudspeakers 12 is geometrically centered on the spiral trajectory of the plurality of microphones 11; the spiral array structure includes multiple spiral segments; wherein the multiple spiral segments include an X-layer spiral segment in which the plurality of loudspeakers 12 are arranged and a Y-layer spiral segment in which the plurality of microphones 11 are arranged, wherein X and Y are both positive integers.

[0055] For example, refer to Figure 6A Along the radial direction of the spiral array, from the inside out, loudspeakers 12 are arranged on the first, third, fourth, sixth, seventh, ninth, and eleventh concentric circles, totaling seven circles of loudspeakers 12. Microphones 11 are arranged on the second, fifth, eighth, and tenth concentric circles, totaling four circles of microphones 11. The audio array includes a central loudspeaker 12, seven layers of loudspeakers 12, and four layers of microphones 11. That is, X = 7 and Y = 4.

[0056] It's important to note that the combination of multiple concentric / spiral layers is equivalent to implementing multiple aperture designs in parallel within the same array. Different aperture sizes can match audio signals of different frequencies. Furthermore, the multi-layer structure makes it possible to set different weighting coefficients for each layer across multiple frequency points (or wide bandwidths), thereby achieving amplitude / phase compensation to frequency to improve beamform. In addition, the speaker and microphone layers share a geometric center, making it easier to establish one-to-one mapping or layered transfer models, facilitating coordinated echo / feedback cancellation and directional amplification control. Moreover, the multi-layer distribution provides greater spatial freedom, enabling simultaneous optimization of low-frequency and high-frequency beam control, and achieving coordinated array control of speakers and microphones at different layers.

[0057] In some embodiments of the concentric circle array, the M concentric circles include an M1 layer and an M2 layer along the radial direction, wherein the number of loudspeakers 12 on the concentric circles of the M1 layer is less than the number of loudspeakers 12 on the concentric circles of the M2 layer. That is, from the inside to the outside along the radial direction, the number of loudspeakers 12 on the inner concentric circles is less than the number of loudspeakers 12 on the outer concentric circles.

[0058] It should be noted that the number of speakers 12 or microphones 11 increases from the inner layer to the outer layer, not strictly decreases, but rather shows an overall increasing trend from the inner layer to the outer layer. For example, in some examples, the number of speakers 12 gradually decreases from the inner layer to the outer layer. Conversely, in some layers, the number of speakers 12 is equal from the inner layer to the outer layer.

[0059] For example, refer to Figure 5 With M = 4, the number of speakers 12 contained in the four concentric circles along the radial direction from the inside out is 6, 12, 18, and 18 respectively. It can be seen that the number of speakers 12 generally increases from the inside out along the radial direction of the concentric circles.

[0060] In some embodiments of the concentric circle array, the N concentric circles include an N1th layer and an N2th layer along the radial direction, and the number of microphones 11 on the N1th layer concentric circle is less than the number of microphones 11 on the N2th layer concentric circle.

[0061] For example, still refer to Figure 5 Along the radial direction of the concentric circles from the inside out, the first ring has 12 microphones 11, and each of the remaining rings has 19 microphones 11.

[0062] Alternatively, for a helical array, in some embodiments, the X-layer helical segment includes an X1 layer and an X2 layer along the radial direction, wherein the number of loudspeakers 12 on the X1 layer helical segment is less than the number of loudspeakers 12 on the X2 layer helical segment.

[0063] For example, refer to Figure 6A With X = 7, the number of loudspeakers 12 contained in the 7 spiral segments along the radial direction from the inside to the outside is: 9, 10, 10, 10, 10, 10, 10, 10. It can be seen that the number of loudspeakers 12 generally increases from the inside to the outside along the radial direction of the spiral array.

[0064] For a helical array, in some embodiments, the Y-layer helical segment includes a Y1 layer and a Y2 layer along the radial direction, and the number of microphones 11 on the Y1 layer helical segment is less than the number of microphones 11 on the Y2 layer helical segment.

[0065] It should be noted that the number of array elements decreases radially from the inside out. Typically, low-frequency signals have longer wavelengths, requiring a larger effective aperture and denser sampling to control the main lobe width and side lobes. Increasing the number of outer array elements helps increase the number of external sampling points, which is beneficial for low-frequency directivity and reducing low-frequency grating lobes. Fewer or more compact inner array elements prevent the array from causing adverse interference due to excessive repetition in the high-frequency band; instead, it facilitates high-frequency main lobe formation and grating lobe suppression.

[0066] In some embodiments, the concentric circles containing the speaker 12 and the microphone 11 are arranged alternately.

[0067] As one possible implementation, the arrangement order can be microphone 11 in one layer, speaker 12 in one layer, microphone 11 in two layers, speaker 12 in one layer, etc., without limitation. This alternating arrangement can further optimize space utilization and achieve a high degree of integration between the microphone 11 array and the speaker 12 array.

[0068] For example, refer to Figure 5 Along the radial direction of the concentric circles from the inside out, the concentric circles in each layer are arranged in sequence as follows: microphone 11, speaker 12, microphone 11, microphone 11, speaker 12, microphone 11, microphone 11, speaker 12, microphone 11, speaker 12, microphone 11.

[0069] Alternatively, in some embodiments, the helical segment containing the speaker 12 alternates with the helical segment containing the microphone 11. For example, see reference... Figure 6A Along the radial direction of the spiral array from the inside out, the spiral segments of each layer are arranged in sequence as follows: speaker 12, microphone 11, speaker 12, speaker 12, microphone 11, speaker 12, speaker 12, microphone 11, speaker 12, microphone 11, speaker 12.

[0070] Alternating arrangement increases the spatial coupling diversity between speakers and microphones, optimizing space utilization, shortening the average distance between speakers and adjacent microphones, optimizing echo paths, and facilitating audio signal processing. Furthermore, alternating arrangement allows for finer-grained zoning control in the radial direction. For example, alternating layers can serve as the physical basis for staggered control of speaker and microphone orientation. Moreover, it avoids blind spots or localized interference caused by clustering similar components.

[0071] This application embodiment also provides an audio array, including: a carrier plate 10, a plurality of microphones 11 disposed on the carrier plate 10, and a plurality of speakers 12 disposed on the carrier plate 10. The plurality of speakers 12 are arranged around the plurality of microphones 11.

[0072] That is, in the audio array of the above embodiment, the speaker 12 is located at the center of the array. In this embodiment, the microphone 11 is located at the center of the array. For a detailed description of the relevant structures in this embodiment, please refer to the foregoing embodiments. Figure 6B , Figure 6C An example structure of this audio array is shown.

[0073] Specifically, surrounding the microphone with a loudspeaker directs the loudspeaker's main energy outwards, resulting in less energy being directly received by the microphone (related to the loudspeaker's directivity), thus reducing the risk of feedback. Furthermore, a centrally located microphone provides nearly uniform pickup sensitivity for sound waves in all horizontal directions, offering an omnidirectional pickup pattern. Moreover, when the central microphone and outer microphones combine to form a beam, the central microphone provides a direction-biased reference signal, ensuring highly consistent performance of the synthesized directional beam across a 360-degree range and avoiding beam distortion caused by microphone misalignment.

[0074] In one possible design, the outer ring speakers can create directional sound amplification. The amplification direction of the speakers can be controlled by an algorithm to avoid the central pickup direction. This method surrounds the microphone, causing the amplified beam to be emitted towards the target audience outside the microphone, thus making energy isolation and directional amplification easier between amplification and pickup.

[0075] In some embodiments, the plurality of microphones 11 are arranged in a concentric circle array according to a predetermined concentric circle trajectory, or the plurality of microphones 11 are arranged in a spiral array according to a predetermined spiral trajectory. In other words, the plurality of microphones are arranged in a concentric circle array or a spiral array.

[0076] In some embodiments, when the plurality of speakers are arranged in a concentric circle array, the plurality of microphones 11 are located at the center of the concentric circle array. Alternatively, when the plurality of speakers are arranged in a spiral array, the plurality of microphones 11 are located at the geometric center of the spiral array.

[0077] The solution provided in this application, which combines multiple turns of concentric or spiral arrays, gives the audio array greater control freedom, including control of different beamwidths and beam characteristics of different coverage areas.

[0078] Furthermore, the central position ensures that the propagation distance and angle from the microphone to the outer speaker are regularly distributed, which simplifies the acoustic model, facilitates the use of ring / radial filters for analysis, reduces estimation complexity, and improves robustness.

[0079] In some embodiments, the plurality of speakers 12 are arranged in a ring array that shares the same center as the concentric circle array of the microphones 11.

[0080] In this configuration, from the innermost ring outwards, the number of microphones 11 is L1, and the number of speakers 12 on the outermost ring is L2, with L1 being greater than L2. In other words, the number of inner layer microphones 11 is greater than the number of adjacent outer layer speakers 12.

[0081] For example, the innermost ring has 12 microphones 11, while the adjacent outer ring has 6 speakers 12, satisfying L1>L2.

[0082] Alternatively, in some embodiments, the plurality of loudspeakers are arranged in a spiral array with the same geometric center as the microphone spiral array; wherein, radially from the inside out, the number of microphones located in the inner spiral segment is L3, the number of loudspeakers located in the outer spiral segment is L4, and L3 is greater than L4.

[0083] The method provided in this application embodiment has a greater number of inner layer microphones 11 than the number of adjacent outer layer loudspeakers 12, which means that the sound field spatial sampling is denser, helping to capture sound field details (such as sound wave direction and phase changes) more precisely. Furthermore, in concentric circle or spiral arrays, spatial sampling must satisfy the spatial Nyquist criterion. A larger number and higher density of inner layer microphones can reduce spatial aliasing in the high-frequency band during beamforming or sound field reconstruction, thus improving high-frequency performance.

[0084] In addition, having one or more outer speaker layers than adjacent one or more microphone layers reduces the energy received by the microphones from the speaker layers, which helps reduce the risk of feedback.

[0085] In some embodiments, the concentric circle array structure further includes a plurality of microphones 11 arranged along a predetermined concentric circle trajectory, wherein the concentric circle trajectory in which the plurality of loudspeakers 12 are located has the same geometric center as the concentric circle trajectory in which the plurality of microphones 11 are located; the concentric circle array structure includes multiple layers of concentric circles; wherein the multiple layers of concentric circles include M layers of concentric circles in which the plurality of loudspeakers 12 are arranged and N layers of concentric circles in which the plurality of microphones 11 are arranged, where M and N are both positive integers.

[0086] It is understood that M and N in this embodiment may be different from M and N in the aforementioned embodiment (where the speaker 12 is located at the center).

[0087] Alternatively, in some embodiments, the spiral array structure further includes a plurality of microphones 11 arranged along a predetermined spiral trajectory, wherein the spiral trajectory of the plurality of loudspeakers 12 is at the same geometric center as the spiral trajectory of the plurality of microphones 11; the spiral array structure includes multiple spiral segments; wherein the multiple spiral segments include an X-layer spiral segment in which the plurality of loudspeakers 12 are arranged and a Y-layer spiral segment in which the plurality of microphones 11 are arranged, wherein X and Y are both positive integers.

[0088] It is understood that X and Y in this embodiment may be different from X and Y in the aforementioned embodiment (where the speaker 12 is located at the center).

[0089] In this method, concentric circles / spirals enable non-uniform but regular spatial sampling. Compared to uniform circular arrays, spiral or multi-turn concentric designs more easily achieve constant beamwidth and deeper sidelobe suppression across the entire operating frequency band. Through nonlinear / radial sampling of concentric circles or spirals, wide-bandwidth, low grating lobe, and directionally consistent beam control can be achieved.

[0090] In some embodiments, the concentric circles containing the speaker 12 and the microphone 11 are arranged alternately.

[0091] Alternatively, in some embodiments, the spiral segment containing the speaker 12 is arranged alternately with the spiral segment containing the microphone 11.

[0092] Specifically, the alternating arrangement increases the diversity of spatial coupling between the speaker and the microphone, optimizes space utilization, shortens the average distance between the speaker and the adjacent microphone, optimizes the echo path, and facilitates the decoding of audio signals.

[0093] refer to Figure 6B The concentric circle array structure includes: a plurality of microphones 11 arranged along a predetermined concentric circle trajectory, and a plurality of speakers 12 arranged along a predetermined concentric circle trajectory. The concentric circle array structure may include multiple layers of concentric circles. In this concentric circle array structure, the geometric center of the concentric circle trajectory where the plurality of speakers 12 are located is the same as the geometric center of the concentric circle trajectory where the plurality of microphones 11 are located. That is, the concentric circles where the speakers 12 are located and the concentric circles where the microphones 11 are located are arranged around the same center. The microphones 11 are located at the center of the concentric circle array. Specifically, microphones 11 are arranged on the first, third, fourth, sixth, seventh, ninth, and eleventh concentric circles from the inside out along the radial direction of the concentric circles, totaling 7 circles of microphones 11. Speakers 12 are arranged on the second, fifth, eighth, and tenth concentric circles, totaling 4 circles of speakers 12. The audio array includes a central microphone 11, 4 layers of speakers 12, and 7 layers of microphones 11. That is, M is 4 and N is 7.

[0094] For example, the radii of the 7-ring microphone array 11, from smallest to largest, are 0.021m, 0.044m, 0.090m, 0.170m, 0.065m, 0.130m, and 0.255m, respectively, with a microphone 11 located at the center of the array. For example, the radii of the 4 concentric rings of speaker 12 are 0.0325m, 0.0775m, 0.15m, and 0.210m, respectively.

[0095] Whether it's a microphone or a speaker, the radius distribution between the rings generally follows a rule: it should be set according to a certain multiple (not strictly) of the base ring. This design method originates from the beamwidth formula of beamforming. Under the premise of satisfying this multiple relationship, the grating lobe problem of the microphone array or speaker can be minimized. This, combined with beamforming algorithms, can achieve better sidelobe suppression and constant beamwidth. Here, the base ring can refer to the innermost first ring. The outer ring speaker size, i.e., the radius of the speaker, is larger. This design allows the outermost speaker to improve low-frequency extension, and the larger radius of the concentric circles of the outer ring speakers enhances low-frequency directivity. Furthermore, the concentric circles of the remaining speaker rings have relatively smaller radii, which is beneficial for mid-to-high frequency beamwidth. Beamforming algorithm optimization can achieve control of the mid-to-high frequency beams of the speaker array.

[0096] For example, there are 128 microphones in total, including 7 ring microphones 11 and a center microphone 11.

[0097] For example, the loudspeaker 12 on the outermost concentric circle uses a larger loudspeaker unit (large horn), with a radius of approximately 0.03~0.04m. The loudspeakers 12 on the remaining three inner concentric circles use smaller loudspeaker units (small horns), with a radius of approximately 0.01~0.03m. The larger radius of the outer ring loudspeaker circle enhances the directivity of low frequencies, while the relatively smaller radius of the concentric circles of the other rings of loudspeakers is beneficial for beamwidth in the mid-to-high frequencies.

[0098] Figure 6B , Figure 6C This is merely an example structure of the audio array. It should be understood that in concentric circle or spiral arrays, the specific arrangement of microphones or speakers in each layer can be determined based on actual conditions and is not limited. The specific number of microphones or speakers in each layer is also not specifically limited.

[0099] Furthermore, the spiral array only with Figures 2-4 , Figure 6A , Figure 6C For example, a spiral array can also be other types of spiral arrays, without restriction.

[0100] In one or more embodiments of this application, the outermost ring of the audio array is a loudspeaker 12. Thus, the outer ring loudspeakers can form directional sound amplification. The amplification direction of the loudspeakers can be controlled by an algorithm to avoid the central pickup direction. Furthermore, this design allows the outermost ring loudspeakers to improve the low-frequency depth.

[0101] For example, the loudspeaker 12 on the outermost concentric circle uses a larger loudspeaker unit (large horn), with a radius of approximately 0.03~0.04m. The loudspeakers 12 on the remaining three inner concentric circles use smaller loudspeaker units (small horns), with a radius of approximately 0.01~0.03m. The larger radius of the outer circle enhances the directivity of low frequencies, while the relatively smaller concentric circle radii of the other loudspeakers benefit the beamwidth of mid-to-high frequencies.

[0102] The above Figure 5 , Figure 6A The audio array shown can be referred to as an upgraded audio array.

[0103] For example, the basic model is smaller in size and has fewer microphones than the advanced model. The basic and upgraded audio arrays in this application each have their own technical advantages: The basic model offers a lightweight user experience. Furthermore, the design of the large and small coils in the basic model ensures good constant beam performance in both low and high frequencies. The small coil plays a crucial role in reducing and suppressing the beam lobe in high frequencies, while the large coil narrows the main lobe width in low frequencies to improve the beam's anti-reverberation capability, thereby enhancing the overall sound pickup clarity of the audio array.

[0104] The upgraded version features a combination of more rings, with the outermost speaker ring having a larger radius, thus improving the depth of low frequencies. Furthermore, the larger radius of the outer ring enhances low-frequency directivity. The smaller radii of the remaining inner rings benefit beamwidth in the mid-to-high frequencies.

[0105] For upgraded audio arrays, beamforming algorithms can be incorporated to control the mid-frequency and high-frequency beams of the speaker array. This gives the audio array greater control freedom, including control over different beamwidths and beam characteristics (such as white noise gain and directivity factor) for different coverage areas.

[0106] For example, the basic audio array of this application embodiment can achieve the following performance: Microphone array: (1) Supports 5° and 20° beamwidth, with a maximum pickup radius of 3m. (2) Full-frequency white noise gain of 10~15dB and average sidelobe suppression depth of 15~20dB. (3) Supports fixed beamwidth and selectable preset area modes (such as 4-zone or 8-zone).

[0107] Center loudspeaker: (1) Fixed in the lower area, with a center coverage range of 3m. (2) Full-range loudspeaker with a frequency response of 80Hz~16000Hz.

[0108] For example, the upgraded audio array of this application embodiment can achieve the following performance: Microphone array: (1) Supports beamwidth of 5°~40°, with a maximum pickup radius of 5m. (2) Full-frequency white noise gain of 15~21dB and average sidelobe suppression depth of 25~30dB. (3) Supports fixed beam and dynamic beam, with dynamic beam supporting automatic switching of 1000+ beams. (4) Supports free allocation of 8~16 pickup and amplification zones.

[0109] Array loudspeakers: (1) Supports 5°~40° beamwidth, with a maximum broadcast radius of 5m. (2) Full-range loudspeakers with a frequency response of 80Hz~24000Hz. (3) Supports omnidirectional and directional area playback modes.

[0110] It should be noted that in one or more embodiments of this application, the specific number of turns of the microphone or speaker, or the specific layer in which it is arranged, is not limited; the illustrations are merely examples.

[0111] The above examples primarily use planar concentric circle arrays or spiral arrays. In one or more embodiments of this application, a concentric circle array can also be understood or replaced as a concentric sphere array. A spiral array can also be understood or replaced as a three-dimensional spiral array. In a concentric sphere array, speakers and microphones can be alternately arranged on different spherical layers of the concentric spheres. Similarly, in a three-dimensional spiral array, speakers and microphones can be alternately arranged on different three-dimensional spiral segments.

[0112] In other designs of embodiments of this application, the speakers may also be arranged in other trajectories, such as rectangular array, linear array or cross array.

[0113] This application also provides an audio processing method applied to an audio array. In this method, the weight coefficients of the plurality of microphones 11 and the weight coefficients of the speaker 12 in the audio array are determined based on a first algorithm, the first algorithm including least squares method and / or convex optimization algorithm.

[0114] As one possible implementation, the array element positions can be rationally deployed according to the beam characteristics, the design requirements of the constant width beam, and the sound quality requirements of the microphone 11 or the speaker 12.

[0115] For example, the design requirement for a constant beamwidth is to support a beamwidth range of 5° to 40°. The sound quality requirements for the microphone 11 or speaker 12 are, for example, to support three-frequency equalization and a low-frequency extension depth of up to 80Hz.

[0116] Furthermore, beam optimization algorithms based on least squares and convex optimization can be combined to optimize the constant beam weight coefficients of microphone 11 and speaker 12. For example, this can enable functions such as controllable beamwidth, controllable deflection direction, and adjustment of coverage area size.

[0117] Taking a 16-element linear array with a spacing of 0.0425m as an example, the simulation uses the least squares method for optimization design, and the resulting 10° broadened constant beam pattern is as follows. Figure 7 As shown, comparison Figure 8 As shown in the general DS beamforming algorithm, it can be seen that the constant beam obtained by least squares optimization has better full-frequency consistent width response characteristics, making the three frequencies of the sound output more balanced.

[0118] Furthermore, this constant beam possesses deeper sidelobe suppression capabilities, such as... Figure 7 The side lobe direction is significantly higher than Figure 8 The suppression depth is increased by more than 10 dB. This further suppresses reflection sources from the ceiling, walls, and floor, giving the beam stronger anti-reverberation capabilities.

[0119] Furthermore, by using the least squares method for objective constraint design, weighting coefficients with different beamwidths can be designed. Here, beamwidth refers to the beam width from the beam center (0dB) down to the -3dB energy level. For example... Figure 7 The red dashed line indicates that the bandwidth reaches 10° above 2kHz.

[0120] Furthermore, the beam deflection direction can be controlled using the least squares method to cover a user-defined coverage area. For example, the beam center can be deflected to a direction other than 0°.

[0121] Furthermore, the white noise gain and pointing factor can be optimized using the least squares method.

[0122] Among them, white noise gain and pointing factor characterize two aspects of beam properties. White noise gain represents the beam’s ability to suppress omnidirectional noise, while pointing factor represents the beam’s ability to suppress directional noise. Both indicators can be used as preset targets or final evaluation targets in beam optimization algorithms.

[0123] It should be understood that the above simulation uses a linear array as an example. This least-squares method can be used for concentric circle arrays, spiral arrays, or area arrays. Furthermore, while the simulation uses the least-squares method, other beam optimization algorithms, such as convex optimization algorithms, can be used in real-world scenarios. Combining multiple beam optimization algorithms is also possible, without limitation.

[0124] This application embodiment also provides a synchronization method for the microphone array 11 and the speaker 12 in an audio array, which can use FPGA technology to realize the synchronous acquisition and playback of signals of each array element of the microphone 11 and the speaker 12.

[0125] Considering that the synchronization of the device array signals is crucial to the control and effectiveness of the beamforming algorithm, this method can achieve synchronized control between the beams of the microphone array 11 and the speaker 12. Thus, the beams of the microphones and speakers can be controlled through a sound source localization algorithm to achieve directional audio acquisition and playback.

[0126] This application also provides an intelligent adaptive filtering algorithm for audio arrays. The following description, in conjunction with a specific scenario, illustrates this: Remote calls require echo cancellation technology to suppress echoes, while on-site public address systems require feedback suppression technology to suppress feedback. Both of these key use cases involve the issue of full-duplex interference cancellation. For remote calls, the simultaneous speaking of speakers at both ends constitutes a full-duplex scenario. For on-site public address systems, full-duplex mode is maintained as long as the speaker begins speaking, with microphone 11 simultaneously capturing both the speaker's voice and the sound played from the speaker.

[0127] The highly coupled integrated microphone and speaker design makes it difficult for traditional adaptive filtering techniques to address nonlinear echo or feedback problems. Therefore, this application introduces an intelligent adaptive filtering algorithm. As an example, this algorithm can combine AI with Kalman adaptive filtering technology. This ensures the pickup and amplification quality of the audio array.

[0128] This application also provides an audio device, including a processor and an audio array as described in any one of the embodiments of this application, wherein the processor is electrically connected to a plurality of microphones 11 and speakers 12 in the audio array.

[0129] In one or more embodiments of this application, the radius distribution between concentric circle arrays or spiral arrays, whether for microphones or speakers, generally follows a rule: it is set according to a certain multiple (not strictly) of the base circle. This design method originates from the beamwidth formula of beamforming. Under the premise of satisfying this multiple relationship, the grating lobe problem of microphone arrays or speakers can be minimized as much as possible. In addition, combined with beamforming algorithms, better sidelobe suppression and constant beamwidth can be obtained. Here, the base circle can refer to the innermost first circle.

[0130] In addition to recessed installation, the microphone 11 device can also be installed by ceiling mounting (fixed to the ceiling) or suspended from the ceiling by a hanging wire. This application embodiment does not limit the specific installation method.

[0131] For example, Figure 9 A schematic diagram of the structure of an electronic device provided in an embodiment of this application is shown.

[0132] like Figure 9As shown, the electronic device 500 may include a processor 510 and an audio array 530. Optionally, the electronic device 500 may also include a memory 520.

[0133] Processor 510 may include one or more processing units, such as application processor (AP), modem processor, graphics processing unit (GPU), image signal processor (ISP), controller, video codec, digital signal processor (DSP), baseband processor, and / or neural network processing unit (NPU). These different processing units may be independent devices or integrated into one or more processors.

[0134] The processor can generate operation control signals based on the instruction opcode and timing signals to control the instruction fetching and execution.

[0135] The processor 510 may also include a memory for storing instructions and data. In some embodiments, the memory in the processor 510 is a cache memory. This memory can store instructions or data that the processor 510 has just used or that are used repeatedly. If the processor 510 needs to use the instruction or data again, it can directly retrieve it from the memory. This avoids repeated accesses, reduces the waiting time of the processor 510, and thus improves the efficiency of the system.

[0136] In some embodiments, processor 510 may include one or more interfaces. These one or more interfaces may be used to connect processor 510 to memory 520, etc.

[0137] The memory 520 can be used to store computer executable program code, which includes instructions. The memory 520 may include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function (such as image playback), etc. The data storage area may store data created during the use of the electronic device 500, etc. The processor 510 executes various functional applications and data processing of the electronic device 500 by running instructions stored in the memory 520 and / or instructions stored in memory located within the processor.

[0138] It is understood that the structures illustrated in the embodiments of this application do not constitute a specific limitation on the electronic device. In other embodiments of this application, the electronic device may include... Figure 9The diagram shows more or fewer components, or combinations of components, or separate components, or different arrangements of components. The components shown can be implemented in hardware, software, or a combination of both.

[0139] It should be understood that each step in the above method embodiments can be completed by integrated logic circuits in the processor hardware or by instructions in software form. The method steps disclosed in the embodiments of this application can be directly manifested as being executed by a hardware processor, or being executed by a combination of hardware and software modules in the processor.

[0140] It should be noted that the electronic device provided in this application embodiment belongs to the same concept as the method in the above embodiment. Any of the methods provided in the method embodiment can be run on the electronic device. For details of the specific implementation process, please refer to the method embodiment, which will not be repeated here. The embodiments, implementation methods and related technical features of this application can be combined and substituted with each other without conflict.

[0141] This application also provides a computer-readable storage medium storing a computer program that, when run on a computer, causes the computer to perform the methods described in any of the above embodiments.

[0142] In the embodiments of this application, the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM), etc.

[0143] It should be noted that, for the methods of the embodiments of this application, those skilled in the art will understand that all or part of the processes of the methods of the embodiments of this application can be implemented by a computer program controlling related hardware. This computer program can be stored in a computer-readable storage medium, such as in the memory of an electronic device, and executed by at least one processor within the electronic device. During execution, it can include the processes of the embodiments of the method. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, etc.

[0144] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0145] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Although this application has disclosed preferred embodiments as above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. An audio array, characterized in that, include: Support plate; Multiple microphones are mounted on the carrier plate; At least one speaker is mounted on the support plate; The plurality of microphones are arranged around the at least one speaker.

2. The audio array according to claim 1, characterized in that, The multiple microphones are arranged in a concentric circle array or a spiral array.

3. The audio array according to claim 1, characterized in that, When the plurality of microphones are arranged in a concentric circle array, the at least one speaker is located at the center of the concentric circle array; when the plurality of microphones are arranged in a spiral array, the at least one speaker is located at the geometric center of the spiral array.

4. The audio array according to any one of claims 1 to 3, characterized in that, The number of the plurality of microphones ranges from 32 to 128; and / or the maximum coverage angle of the at least one speaker ranges from 120° to 160°.

5. The audio array according to claim 2 or 3, characterized in that, The concentric circle array structure further includes multiple loudspeakers arranged along a predetermined concentric circle trajectory, wherein the geometric center of the concentric circle trajectory where the multiple loudspeakers are located is the same as that of the concentric circle trajectory where the multiple microphones are located; the concentric circle array structure includes multiple layers of concentric circles; wherein, the multiple layers of concentric circles include M layers of concentric circles where the multiple loudspeakers are arranged and N layers of concentric circles where the multiple microphones are arranged, where M and N are both positive integers; Alternatively, the spiral array structure may further include multiple loudspeakers arranged along a predetermined spiral trajectory, wherein the spiral trajectory of the multiple loudspeakers has the same geometric center as the spiral trajectory of the multiple microphones; the spiral array structure includes multiple spiral segments; wherein the multiple spiral segments include an X-layer spiral segment in which the multiple loudspeakers are arranged and a Y-layer spiral segment in which the multiple microphones are arranged, where X and Y are both positive integers.

6. The audio array according to claim 5, characterized in that, The M-layer concentric circles include M1 and M2 layers along the radial direction, and the number of speakers on the M1-layer concentric circles is less than the number of speakers on the M2-layer concentric circles; and / or, the N-layer concentric circles include N1 and N2 layers along the radial direction, and the number of microphones on the N1-layer concentric circles is less than the number of microphones on the N2-layer concentric circles; Alternatively, the X-layer spiral segment includes an X1 layer and an X2 layer along the radial direction, wherein the number of speakers on the X1 layer spiral segment is less than the number of speakers on the X2 layer spiral segment; and / or, the Y-layer spiral segment includes a Y1 layer and a Y2 layer along the radial direction, wherein the number of microphones on the Y1 layer spiral segment is less than the number of microphones on the Y2 layer spiral segment.

7. The audio array according to claim 5, characterized in that, The concentric circles containing the speaker and the concentric circles containing the microphone are arranged alternately; Alternatively, the spiral segment containing the speaker may be arranged alternately with the spiral segment containing the microphone.

8. An audio array, characterized in that, include: Support plate; Multiple microphones are mounted on the carrier plate; Multiple speakers are mounted on the support plate; The plurality of speakers are arranged around the plurality of microphones.

9. The audio array according to claim 8, characterized in that, The multiple microphones are arranged in a concentric circle array or a spiral array.

10. The audio array according to claim 9, characterized in that, When the multiple speakers are arranged in a concentric circle array, the multiple microphones are located at the center of the concentric circle array; when the multiple speakers are arranged in a spiral array, the multiple microphones are located at the geometric center of the spiral array.

11. The audio array according to claim 10, characterized in that, The plurality of loudspeakers are arranged in a ring array with the same center as the concentric circle array of the microphones; wherein, radially from the inside out, the number of microphones in the inner circle is L1, the number of loudspeakers in the outer circle is L2, and L1 is greater than L2. Alternatively, the plurality of loudspeakers are arranged in a spiral array with the same geometric center as the microphone spiral array; wherein, radially from the inside out, the number of microphones located in the inner spiral segment is L3, the number of loudspeakers located in the outer spiral segment is L4, and L3 is greater than L4.

12. The audio array according to claim 9 or 10, characterized in that, The concentric circle array structure further includes multiple microphones arranged along a predetermined concentric circle trajectory, wherein the concentric circle trajectory where the multiple speakers are located has the same geometric center as the concentric circle trajectory where the multiple microphones are located; the concentric circle array structure includes multiple layers of concentric circles; wherein, the multiple layers of concentric circles include M layers of concentric circles where the multiple speakers are arranged and N layers of concentric circles where the multiple microphones are arranged, where M and N are both positive integers; Alternatively, the spiral array structure may further include multiple microphones arranged along a predetermined spiral trajectory, wherein the spiral trajectory of the multiple loudspeakers has the same geometric center as the spiral trajectory of the multiple microphones; the spiral array structure includes multiple spiral segments; wherein the multiple spiral segments include an X-layer spiral segment in which the multiple loudspeakers are arranged and a Y-layer spiral segment in which the multiple microphones are arranged, where X and Y are both positive integers.

13. The audio array according to claim 12, characterized in that, The concentric circles containing the speaker and the concentric circles containing the microphone are arranged alternately; Alternatively, the spiral segment containing the speaker may be arranged alternately with the spiral segment containing the microphone.

14. The audio array according to claim 1 or 8, characterized in that, In the audio array, the weight coefficients of the plurality of microphones and the weight coefficients of the plurality of speakers are determined based on a first algorithm, which includes the least squares method and / or a convex optimization algorithm.

15. An audio device, characterized in that, The device includes a processor and an audio array as described in any one of claims 1-10, wherein the processor has electrical connections to a plurality of microphones and at least one speaker in the audio array.

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