WO2021203474A1 - Mini-type speaker array, vehicle interior sound field control method and apparatus, and storage apparatus - Google Patents

Mini-type speaker array, vehicle interior sound field control method and apparatus, and storage apparatus Download PDF

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Publication number
WO2021203474A1
WO2021203474A1 PCT/CN2020/085843 CN2020085843W WO2021203474A1 WO 2021203474 A1 WO2021203474 A1 WO 2021203474A1 CN 2020085843 W CN2020085843 W CN 2020085843W WO 2021203474 A1 WO2021203474 A1 WO 2021203474A1
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signal
channel signal
micro
user
adjustment strategy
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PCT/CN2020/085843
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French (fr)
Chinese (zh)
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孙舒远
黄兴志
尹昊
黄翔
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瑞声声学科技(深圳)有限公司
瑞声科技(沭阳)有限公司
瑞声精密电子沭阳有限公司
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Publication of WO2021203474A1 publication Critical patent/WO2021203474A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • H04S7/302—Electronic adaptation of stereophonic sound system to listener position or orientation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic

Definitions

  • This application relates to the automotive field, and in particular to a micro speaker array, a method and device for controlling the sound field in a car, and a storage device.
  • the acoustic solution of the traditional car audio system is mainly based on the speaker configuration of the left channel, the right channel, the center channel, and the bass channel.
  • this acoustic scheme is difficult to create a very innovative user experience, especially in terms of the user’s perception of the sound source width of the sound field.
  • the width of the sound perceived by the user in the car is the physical width between the speakers. Arrangement pitch or width.
  • the purpose of this application is to provide a miniature speaker array, an in-car sound field control method and device, and a storage device, which can broaden the playback sound field of the in-car speakers, increase the user’s perception of the sound source width of the car’s sound, and improve the user’s experience in the car. Hearing experience.
  • a technical solution adopted in this application is to provide an in-vehicle sound field control method based on a micro speaker array, including:
  • the first audio signal includes the first audio signal A left channel signal and a first right channel signal
  • the second audio signal includes a second left channel signal and a second right channel signal
  • the first cancellation signal and the first left channel signal are output to the micro speaker located on the left side of the user, and the second cancellation signal and the second right channel signal are output to the micro speaker located on the right side of the user.
  • the step of separately performing signal cancellation processing on the first right channel signal and the second left channel signal includes:
  • a first adjustment strategy for the first right channel signal and a second adjustment strategy for the second left channel signal are preset, and both the first adjustment strategy and the second adjustment strategy include phase adjustment and delay adjustment And one or more of amplitude adjustment;
  • the correlation coefficient of the first adjustment strategy, the correlation coefficient of the second adjustment strategy, and the arrangement spacing between each of the micro speakers are determined according to the sound signal.
  • the step of determining the correlation coefficient of the first adjustment strategy, the correlation coefficient of the second adjustment strategy, and the arrangement spacing between each of the micro speakers according to the sound signal includes:
  • the correlation coefficient of the first adjustment strategy and the correlation coefficient of each of the micro speakers are obtained according to the first adjustment strategy, the second adjustment strategy, the first intensity difference, and the first time difference.
  • the spacing between the layouts are obtained according to the first adjustment strategy, the second adjustment strategy, the first intensity difference, and the first time difference.
  • the step of determining the correlation coefficient of the first adjustment strategy, the correlation coefficient of the second adjustment strategy, and the arrangement spacing between each of the micro speakers according to the sound signal further includes:
  • the correlation coefficient of the second adjustment strategy is obtained according to the first adjustment strategy, the second adjustment strategy, the second intensity difference, and the second time difference.
  • the step of obtaining a first cancellation signal corresponding to the first right channel signal and a second cancellation signal corresponding to the second left channel signal according to the signal cancellation processing result includes:
  • the step of performing human voice compensation processing on the center channel signal and outputting the processed center channel signal to a micro speaker located directly in front of the user includes:
  • the gain of the center channel signal is determined according to the auditory feedback information.
  • the method further includes:
  • the processed center channel signal is output to a micro speaker located directly in front of the user.
  • a vehicle-mounted micro speaker array including: a plurality of micro speakers installed on the center console of the vehicle, and the arrangement spacing between the micro speakers Obtained according to the method for controlling the in-vehicle sound field based on the micro speaker array.
  • the in-vehicle sound field control device includes a processor and a memory coupled to the processor, wherein, The memory stores program instructions for implementing the above-mentioned micro speaker array-based in-vehicle sound field control method; the processor is used to execute the program instructions stored in the memory to control the in-vehicle sound field.
  • another technical solution adopted in this application is to provide a storage device that stores program files capable of realizing the above-mentioned in-vehicle sound field control method based on the micro speaker array.
  • the beneficial effects of this application are: taking advantage of the thin thickness and small size of the vehicle-mounted micro-speaker, a micro-speaker array is formed in a limited space in the car, and the audio signal is canceled.
  • Balance to avoid the imbalance of the left and right channels; on the other hand, the sound of the center channel is located directly in front of the user's position, on the one hand, it increases the stability of the sound image of the playback sound field; on the other hand, it greatly broadens
  • the sound field of the whole vehicle sound reproduction makes the width of the user's perceived sound source wider.
  • FIG. 1 is a schematic flowchart of a method for controlling an in-vehicle sound field based on a micro speaker array according to a first embodiment of the application;
  • FIG. 2 is a schematic diagram of the arrangement of a micro speaker array according to an embodiment of the application.
  • FIG. 3 is a schematic flowchart of a method for controlling a sound field in a vehicle based on a micro speaker array according to a second embodiment of the application;
  • FIG. 4 is a schematic diagram of a user receiving an audio signal from a micro speaker array according to an embodiment of the application
  • FIG. 5 is a schematic flowchart of a method for controlling an in-vehicle sound field based on a micro speaker array according to a third embodiment of an embodiment of the application;
  • FIG. 6 is a schematic diagram of a user's hearing experience according to an embodiment of the application.
  • FIG. 7 is a schematic structural diagram of an in-vehicle sound field control device based on a micro speaker array according to an embodiment of the application;
  • FIG. 8 is a schematic structural diagram of a storage device according to an embodiment of the application.
  • FIG. 1 is a schematic flowchart of a method for controlling a sound field in a vehicle based on a micro speaker array according to a first embodiment of the present application. It should be noted that if there is substantially the same result, the method of the present application is not limited to the sequence of the process shown in FIG. 1.
  • the micro speaker array of the present application is arranged directly above the center console.
  • the micro speaker array includes a plurality of micro speakers.
  • the in-vehicle sound field control method based on the micro speaker array includes the control of the arrangement pitch of the micro speaker array and the control of the micro speaker array. Control of the audio signal of a miniature speaker. As shown in Figure 1, the method includes steps:
  • Step S101 Acquire a first audio signal from one or more micro speakers on the left side of the user, and at the same time acquire a second audio signal from one or more micro speakers on the right side of the user, the first audio signal includes the first left The channel signal and the first right channel signal, and the second audio signal includes the second left channel signal and the second right channel signal.
  • the number and types of micro speakers are not specifically limited.
  • the multiple micro speakers are arranged symmetrically on the central axis, and the spacing between the micro speakers can be personalized and optimized according to different users’ listening experience, thereby enhancing the interior of the car.
  • the micro speaker array includes six micro speakers as an example. Please refer to Figure 2.
  • the six micro speakers are numbered #1, #2, #3, #4, #5, #6 from left to right. .
  • the audio signal output by each micro speaker includes the left channel signal and the right channel signal.
  • the arrangement distance between the #1 micro speaker and the #3 micro speaker is 1, the #4 micro speaker and #6
  • the arrangement distance between No. 3 micro speakers is also l; the arrangement distance between No. 3 mini speakers and No.
  • the speaker on the user's left is #1 micro speaker
  • the speaker on the user's right includes #3 micro speaker, #4 micro speaker, #5 micro speaker, and #6 Micro speakers;
  • the speakers on the user's left include #1 micro speakers, #2 micro speakers, #3 micro speakers, and #4 micro speakers.
  • the speaker on the user's right is #6 No. Micro speakers.
  • Step S102 Perform signal cancellation processing on the first right channel signal and the second left channel signal respectively.
  • step S102 signal cancellation processing is performed on the first right channel signal, so that the first right channel signal emitted by one or more micro speakers located on the left side of the user can cancel the second right channel signal transmitted from other micro speakers to the left ear.
  • Right channel signal At this time, the user’s left ear only hears the first left channel signal; the second left channel signal is processed to cancel the signal, so that the second left channel signal is emitted by one or more micro speakers on the user’s right side.
  • the second left channel signal can cancel the first left channel signal from other micro speakers to the right ear. At this time, the user's right ear only hears the second right channel signal.
  • the signal cancellation processing can be for a full frequency domain signal or a sub-band signal.
  • the signal cancellation processing method includes but is not limited to phase adjustment, delay adjustment, and amplitude adjustment.
  • step S102 includes the following steps:
  • Step S301 Preset a first adjustment strategy for the first right channel signal and a second adjustment strategy for the second left channel signal. Both the first adjustment strategy and the second adjustment strategy include phase adjustment, delay adjustment, and amplitude adjustment. kind or more
  • step S301 the audio signals of the #1 to #6 miniature speakers are respectively expressed as follows:
  • L and R respectively represent the left channel signal and the right channel signal in the original audio signal;
  • A represents the amplitude of the signal;
  • ⁇ represents the start time of the signal;
  • ⁇ 1 and ⁇ 2 indicate the delay from the original audio signal;
  • ⁇ , ⁇ 1 , ⁇ 2 , ⁇ 1 , and ⁇ 2 indicate correlation coefficients.
  • Step S302 Determine the sound signal received by the two ears of the user according to the first adjustment strategy, the second adjustment strategy, and the acoustic transfer function of each micro-speaker;
  • step S302 when the #2 micro-speaker and the #5 micro-speaker are not working, referring to Fig. 4, the sound signal L Ear received by the left ear of the user in the main driving position is:
  • L Ear S(1)*H 1 (l, d)+S(3)*H 3 (l, d)+S(4)*H 5 (l, d); where * means convolution operation.
  • the sound signal R Ear received by the user's right ear at the main driving position is:
  • R Ear S(1)*H 2 (l, d)+S(3)*H 4 (l, d)+S(4)*H 6 (l, d). in,
  • the #6 micro-speaker Since the #6 micro-speaker is far from the main driving position and contributes little to the hearing perception of the main driving position, the sound signal of the #6 micro-speaker is ignored in the above calculation.
  • l is the arrangement spacing between #1 micro speakers and #3 micro speakers
  • d is the arrangement spacing between #3 micro speakers and #4 micro speakers
  • the acoustic transfer function is based on the spacing between the micro speakers.
  • H 1 (l, d) is the acoustic transfer function of the audio signal of the user's left ear receiving #1 micro speaker
  • H 2 (l, d) is the user's right ear receiving #1 micro speaker
  • the acoustic transfer function of the audio signal H 3 (l, d) is the acoustic transfer function of the user’s left ear receiving the audio signal of the #3 mini speaker
  • H 4 (l, d) is the user’s right ear receiving #3
  • H 5 (l, d) is the acoustic transfer function of the user’s left ear receiving the audio signal of the #4 micro speaker
  • H 6 (l, d) is the user’s right ear receiving#
  • the sound signal L Ear received by the left ear of the user in the co-pilot position is:
  • the sound signal R Ear received by the user's right ear at the front passenger position is:
  • R Ear S(6)*H 7 (l, d)+S(4)*H 9 (l, d)+S(3)*H 11 (l, d). in,
  • H 8 (l, d) is the user’s
  • the left ear receives the acoustic transfer function of the audio signal of the #6 micro speaker
  • H 7 (l, d) is the acoustic transfer function of the user’s right ear receiving the audio signal of the #6 micro speaker
  • H 10 (l, d) is The acoustic transfer function of the audio signal of the user’s left ear receiving the #4 mini speaker
  • H 9 (l, d) is the acoustic transfer function of the user’s right ear receiving the audio signal of the #4 mini speaker
  • H 12 (l, d ) Is the acoustic transfer function of the user's left ear receiving the
  • Step S303 Determine the correlation coefficient of the first adjustment strategy, the correlation coefficient of the second adjustment strategy, and the arrangement spacing between the micro speakers according to the sound signal.
  • step S303 the sound signals of the two ears of the user at the main driving position are respectively obtained, and the first intensity difference and the first time difference of the sound signals between the two ears are calculated; based on the optimal solution method, according to the first adjustment strategy, The second adjustment strategy, the first intensity difference, and the first time difference obtain the correlation coefficient of the first adjustment strategy and the arrangement spacing between each micro-speaker.
  • the first intensity difference and the first time difference of the sound signals between the ears are calculated according to the following formula:
  • ⁇ IID 1 is the first intensity difference
  • ⁇ ITD 1 is the first time difference
  • the second intensity difference and the second time difference of the sound signals between the ears are calculated according to the following formula:
  • ⁇ IID 2 is the second intensity difference
  • ⁇ ITD 2 is the second time difference
  • Step S103 Obtain a first cancellation signal corresponding to the first right channel signal and a second cancellation signal corresponding to the second left channel signal according to the signal cancellation processing result.
  • a first cancellation signal corresponding to the first right channel signal is obtained according to the correlation coefficient of the first adjustment strategy.
  • Channel signal so that the user’s left ear can only hear the first left channel signal; according to the correlation coefficient of the second adjustment strategy, the second cancellation signal corresponding to the second left channel signal is obtained.
  • the first left channel signal from one or more micro speakers on the left makes the user's right ear only hear the second right channel signal.
  • Step S104 Output the first cancellation signal and the first left channel signal to the micro speaker on the left side of the user, and simultaneously output the second cancellation signal and the second right channel signal to the micro speaker on the right side of the user.
  • step S104 when ⁇ , ⁇ 1 , ⁇ 1 , l, d, ⁇ 2 , and ⁇ 2 are all determined, #1 ⁇ #6 micro speakers are arranged according to the calculated arrangement pitch to form a micro speaker array , And respectively feed the audio signals calculated by the above theory to the #1 ⁇ #6 micro speakers.
  • Step S105 Obtain the center channel signal from the micro speaker located directly in front of the user.
  • the #2 micro speaker and the #5 micro speaker output a center channel signal, and the center channel signal includes a left channel signal and a right channel signal.
  • Step S106 Perform human voice compensation processing on the center channel signal and output the processed center channel signal to the micro speaker located directly in front of the user.
  • step S106 refer to FIG. 5, which also includes:
  • Step S501 Acquire the user's auditory feedback information on the center channel signal in real time
  • Step S502 Determine the gain of the center channel signal according to the auditory feedback information.
  • the micro-speaker adjusted numbers # 2 and # 5 as the gain of the micro speaker of the center channel reaches a balance with other miniature loudspeaker sense of hearing to determine the gain ⁇ numbers # 1, No. 2 and the miniature loudspeaker miniature loudspeaker # 5
  • the gain ⁇ 2 First obtain the first center channel signal from the micro speaker directly in front of the main driving position and the second center channel signal from the micro speaker directly in front of the co-pilot position; then obtain the user's first center channel signal in real time And the auditory feedback information of the second center channel signal; finally, according to the auditory feedback information, the gain adjustment of the first center channel signal and the second center channel signal are performed to obtain the gain ⁇ 1 of the first center channel signal and the second center channel signal.
  • the gain of the center channel signal ⁇ 2 .
  • step S502 it further includes:
  • Step S503 Acquire the user's auditory feedback information on the center channel signal in real time
  • Step S504 Perform timbre compensation processing on the center channel signal according to the auditory feedback information
  • Step S505 Output the processed center channel signal to the micro speaker located directly in front of the user.
  • the in-car sound field control method based on the micro speaker array of the first embodiment of the present application transmits the right channel signal to one or more micro speakers located on the left side of the user and the one or more micro speakers located on the right side of the user.
  • the left channel signal undergoes signal cancellation processing to increase the balance of the left and right channels in the sound reproduction and avoid the imbalance of the left and right channels.
  • the center channel signal sent by the micro-speaker is located directly in front of the user’s position. On the one hand, it increases the stability of the sound image of the playback sound field. On the other hand, it greatly expands the sound field of the vehicle sound playback, making the user The perceived sound source width becomes wider, and the auditory sound width is much larger than the visual and physical micro-speaker pitch width.
  • Fig. 2 is a schematic diagram of the arrangement of a vehicle-mounted micro speaker array according to an embodiment of the present application.
  • the micro speaker array includes a plurality of micro speakers installed on the center console of the vehicle. Taking advantage of the thin thickness and small size of the vehicle-mounted micro-speaker, the micro-speaker array is arranged in the limited space in the car. The number and type of micro speakers are not specifically limited. Multiple micro speakers are arranged symmetrically on the central axis. The spacing between the micro speakers can be personalized and optimized according to different users’ listening experience, thereby enhancing the listening experience of each user in the car. Sense of experience.
  • the micro speakers used in this embodiment are preferably moving coil speakers with a size of 30 mm x 60 mm x 12 mm, and the arrangement distance between the micro speakers is obtained according to the above-mentioned in-vehicle sound field control method based on the micro speaker array.
  • micro-speaker array including six micro-speakers as an example for description. Please refer to Figure 2.
  • the six micro-speakers are numbered #1, #2, #3, #4, #5, #6 from left to right.
  • the audio signal output by each micro speaker includes the left channel and the right channel.
  • the spacing between the #1 micro speaker and the #3 micro speaker is l, the #4 micro speaker and the #6 micro speaker are arranged at a distance of 1.
  • the spacing between the speakers is also l; the spacing between the #3 micro speakers and the #4 micro speakers is d; the #2 micro speakers are located directly in front of the main driving position, and the #5 micro speakers are located Directly in front of the co-pilot's position.
  • the audio signals of #1 ⁇ #6 micro speakers are expressed as follows:
  • L and R respectively represent the left channel signal and the right channel signal in the original audio signal;
  • A represents the amplitude of the signal;
  • ⁇ represents the start time of the signal;
  • ⁇ 1 and ⁇ 2 indicate the delay from the original audio signal;
  • ⁇ , ⁇ 1 , ⁇ 2 , ⁇ 1 , and ⁇ 2 indicate correlation coefficients.
  • FIG. 7 is a schematic structural diagram of an in-vehicle sound field control device based on a micro speaker array according to an embodiment of the application.
  • the in-vehicle sound field control device 70 includes a processor 71 and a memory 72 coupled to the processor 71.
  • the memory 72 stores program instructions for implementing the method for controlling the in-vehicle sound field based on the micro-speaker array of any of the above embodiments.
  • the processor 71 is configured to execute program instructions stored in the memory 72 to control the sound field in the vehicle.
  • the processor 71 may also be referred to as a CPU (Central Processing Unit, central processing unit).
  • the processor 71 may be an integrated circuit chip with signal processing capabilities.
  • the processor 71 may also be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component .
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • FIG. 8 is a schematic structural diagram of a storage device according to an embodiment of the application.
  • the storage device in this embodiment of the present application stores a program file 81 that can implement all the above methods.
  • the program file 81 can be stored in the above storage device in the form of a software product, and includes a number of instructions to enable a computer device (which can It is a personal computer, a server, or a network device, etc.) or a processor (processor) that executes all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage devices include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disks or optical disks and other media that can store program codes.
  • terminal devices such as computers, servers, mobile phones, and tablets.
  • the disclosed system, device, and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or integrated. To another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.

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Abstract

Provided in the present application are a mini-type speaker array, a vehicle interior sound field control method and apparatus, and a storage apparatus. The vehicle interior sound field control method comprises: obtaining a first audio signal and a second audio signal; respectively performing signal cancellation processing on a first right sound channel signal in the first audio signal and a second left sound channel signal in the second audio signal; obtaining a first cancel signal and a second cancel signal according to a signal cancellation processing result; outputting the first cancel signal and a first left sound channel signal to a mini-type speaker located at the left side of a user, and simultaneously outputting the second cancel signal and a second right sound channel signal to a mini-type speaker located at the right side of the user. Additionally, a mini-type speaker used for playback of a central sound channel is arranged in front of the user, and whole sound field panning position adjustment is performed. By means of the present method, the playback sound field for vehicle interior speakers can be widened and apparent source width increased, and also stable, centered, clear, high fidelity central panning is provided, improving listening experience.

Description

微型扬声器阵列、车内声场控制方法及装置、存储装置Micro speaker array, in-car sound field control method and device, storage device 【技术领域】【Technical Field】
本申请涉及汽车领域，特别是涉及一种微型扬声器阵列、车内声场控制方法及装置、存储装置。This application relates to the automotive field, and in particular to a micro speaker array, a method and device for controlling the sound field in a car, and a storage device.
【背景技术】【Background technique】
如今，汽车电子技术迅猛发展，优秀的车载影音体验可以显著提升整车的市场竞争力。用户对于车载音响体验的需求已经不再满足于普通的环绕声体验，而传统的车载音响***的声学方案，主要是按照左声道、右声道、中央声道、低音声道的扬声器配置进行声音重放的，这种声学方案很难营造出非常创新的用户体验，尤其是在用户对于声场的感知声源宽度方面，基本上车内用户感知到的声音的宽度就是物理上扬声器之间的排布间距或宽度。Nowadays, with the rapid development of automotive electronics technology, an excellent in-vehicle audio-visual experience can significantly enhance the market competitiveness of the vehicle. The user's demand for car audio experience is no longer satisfied with the ordinary surround sound experience, and the acoustic solution of the traditional car audio system is mainly based on the speaker configuration of the left channel, the right channel, the center channel, and the bass channel. For sound reproduction, this acoustic scheme is difficult to create a very innovative user experience, especially in terms of the user’s perception of the sound source width of the sound field. Basically, the width of the sound perceived by the user in the car is the physical width between the speakers. Arrangement pitch or width.
传统的车载扬声器尺寸偏大，难以在整车有限的空间内形成有效的扬声器阵列，导致重放声场声像不稳定，容易发生左右声失衡，用户的感知 声源宽度不宽，从而影响用户的听感体验。The size of traditional car speakers is too large, and it is difficult to form an effective speaker array in the limited space of the vehicle, resulting in unstable sound image of the playback sound field, prone to left and right sound imbalance, and the user's perceived sound source width is not wide, which affects the user's Hearing experience.
因此，有必要提供一种微型扬声器阵列、车内声场控制方法及装置、存储装置。Therefore, it is necessary to provide a micro speaker array, an in-vehicle sound field control method and device, and a storage device.
【发明内容】[Summary of the invention]
本申请的目的在于提供一种微型扬声器阵列、车内声场控制方法及装置、存储装置，能够拓宽车内扬声器的重放声场，增加用户对于车内声音的感知声源宽度，提升车内用户的听感体验。The purpose of this application is to provide a miniature speaker array, an in-car sound field control method and device, and a storage device, which can broaden the playback sound field of the in-car speakers, increase the user’s perception of the sound source width of the car’s sound, and improve the user’s experience in the car. Hearing experience.
为解决上述技术问题，本申请采用的一个技术方案是：提供一种基于微型扬声器阵列的车内声场控制方法，包括：In order to solve the above technical problems, a technical solution adopted in this application is to provide an in-vehicle sound field control method based on a micro speaker array, including:
获取位于用户左侧的一个或多个微型扬声器发出的第一音频信号，同时获取位于所述用户右侧的一个或多个微型扬声器发出的第二音频信号，所述第一音频信号包括第一左声道信号和第一右声道信号，所述第二音频信号包括第二左声道信号和第二右声道信号；Acquire the first audio signal emitted by one or more micro speakers located on the left side of the user, and at the same time obtain the second audio signal emitted by one or more micro speakers located on the right side of the user, the first audio signal includes the first audio signal A left channel signal and a first right channel signal, the second audio signal includes a second left channel signal and a second right channel signal;
分别对所述第一右声道信号和所述第二左声道信号进行信号抵消处理；Performing signal cancellation processing on the first right channel signal and the second left channel signal respectively;
根据信号抵消处理结果获得与所述第一右声道信号对应的第一抵消信号和与所述第二左声道信号对应的第二抵消信号；Obtaining a first cancellation signal corresponding to the first right channel signal and a second cancellation signal corresponding to the second left channel signal according to a signal cancellation processing result;
输出所述第一抵消信号和所述第一左声道信号给位于所述用户左侧的微型扬声器，同时输出所述第二抵消信号和所述第二右声道信号给位于所述用户右侧的微型扬声器；The first cancellation signal and the first left channel signal are output to the micro speaker located on the left side of the user, and the second cancellation signal and the second right channel signal are output to the micro speaker located on the right side of the user. Micro speakers on the side;
获取位于所述用户的正前方的微型扬声器发出的中央声道信号；Acquiring a center channel signal from a micro speaker located directly in front of the user;
对所述中央声道信号进行补偿人声音色处理并输出处理后的所述中央声道信号给位于所述用户的正前方的微型扬声器。Compensating human voice color processing on the center channel signal and outputting the processed center channel signal to a micro speaker located directly in front of the user.
作为一种改进，所述分别对所述第一右声道信号和所述第二左声道信号进行信号抵消处理的步骤包括：As an improvement, the step of separately performing signal cancellation processing on the first right channel signal and the second left channel signal includes:
预设所述第一右声道信号的第一调整策略和所述第二左声道信号的第二调整策略，所述第一调整策略和所述第二调整策略均包括相位调整、延迟调整和幅度调整中的一种或多种；A first adjustment strategy for the first right channel signal and a second adjustment strategy for the second left channel signal are preset, and both the first adjustment strategy and the second adjustment strategy include phase adjustment and delay adjustment And one or more of amplitude adjustment;
根据所述第一调整策略、所述第二调整策略以及各个所述微型扬声器的声学传递函数确定所述用户的双耳接收到的声音信号；Determine, according to the first adjustment strategy, the second adjustment strategy, and the acoustic transfer function of each of the micro speakers, the sound signal received by the two ears of the user;
根据所述声音信号确定所述第一调整策略的相关系数、所述第二调整策略的相关系数以及各个所述微型扬声器之间的排布间距。The correlation coefficient of the first adjustment strategy, the correlation coefficient of the second adjustment strategy, and the arrangement spacing between each of the micro speakers are determined according to the sound signal.
作为一种改进，所述根据所述声音信号确定所述第一调整策略的相关 系数、所述第二调整策略的相关系数以及各个所述微型扬声器之间的排布间距的步骤包括：As an improvement, the step of determining the correlation coefficient of the first adjustment strategy, the correlation coefficient of the second adjustment strategy, and the arrangement spacing between each of the micro speakers according to the sound signal includes:
分别获取主驾驶位置上用户的双耳的声音信号，并计算双耳之间的声音信号的第一强度差和第一时间差；Acquire the sound signals of the two ears of the user at the main driving position respectively, and calculate the first intensity difference and the first time difference of the sound signals between the two ears;
基于最优解方法，根据所述第一调整策略、所述第二调整策略、所述第一强度差和所述第一时间差获得所述第一调整策略的相关系数以及各个所述微型扬声器之间的排布间距。Based on the optimal solution method, the correlation coefficient of the first adjustment strategy and the correlation coefficient of each of the micro speakers are obtained according to the first adjustment strategy, the second adjustment strategy, the first intensity difference, and the first time difference. The spacing between the layouts.
作为一种改进，所述根据所述声音信号确定所述第一调整策略的相关系数、所述第二调整策略的相关系数以及各个所述微型扬声器之间的排布间距的步骤还包括：As an improvement, the step of determining the correlation coefficient of the first adjustment strategy, the correlation coefficient of the second adjustment strategy, and the arrangement spacing between each of the micro speakers according to the sound signal further includes:
分别获取副驾驶位置上用户的双耳接收到的声音信号，并计算双耳之间的声音信号的第二强度差和第二时间差；Acquire the sound signals received by the ears of the user at the co-pilot position respectively, and calculate the second intensity difference and the second time difference of the sound signals between the ears;
基于所述最优解方法，根据所述第一调整策略、所述第二调整策略、所述第二强度差和所述第二时间差获得所述第二调整策略的相关系数。Based on the optimal solution method, the correlation coefficient of the second adjustment strategy is obtained according to the first adjustment strategy, the second adjustment strategy, the second intensity difference, and the second time difference.
作为一种改进，所述根据信号抵消处理结果获得与所述第一右声道信号对应的第一抵消信号和与所述第二左声道信号对应的第二抵消信号的步 骤包括：As an improvement, the step of obtaining a first cancellation signal corresponding to the first right channel signal and a second cancellation signal corresponding to the second left channel signal according to the signal cancellation processing result includes:
根据所述第一调整策略的相关系数获得与所述第一右声道信号对应的第一抵消信号；Obtaining a first cancellation signal corresponding to the first right channel signal according to the correlation coefficient of the first adjustment strategy;
根据所述第二调整策略的相关系数获得与所述第二左声道信号对应的第二抵消信号。Obtain a second cancellation signal corresponding to the second left channel signal according to the correlation coefficient of the second adjustment strategy.
作为一种改进，所述对所述中央声道信号进行补偿人声音色处理并输出处理后的所述中央声道信号给位于所述用户的正前方的微型扬声器的步骤包括：As an improvement, the step of performing human voice compensation processing on the center channel signal and outputting the processed center channel signal to a micro speaker located directly in front of the user includes:
实时获取所述用户对所述中央声道信号的听觉反馈信息；Acquiring the user's auditory feedback information on the center channel signal in real time;
根据所述听觉反馈信息确定所述中央声道信号的增益。The gain of the center channel signal is determined according to the auditory feedback information.
作为一种改进，在所述根据所述听觉反馈信息确定所述中央声道信号的增益的步骤之后，还包括：As an improvement, after the step of determining the gain of the center channel signal according to the auditory feedback information, the method further includes:
实时获取所述用户对所述中央声道信号的听觉反馈信息；Acquiring the user's auditory feedback information on the center channel signal in real time;
根据所述听觉反馈信息对所述中央声道信号进行音色补偿处理；Performing timbre compensation processing on the center channel signal according to the auditory feedback information;
输出处理后的所述中央声道信号给位于所述用户的正前方的微型扬声器。The processed center channel signal is output to a micro speaker located directly in front of the user.
为解决上述技术问题，本申请采用的另一个技术方案是：提供一种车载微型扬声器阵列，包括：安装在车辆的中控台上的多个微型扬声器，所述微型扬声器之间的排布间距根据所述的基于微型扬声器阵列的车内声场控制方法获得。In order to solve the above technical problems, another technical solution adopted by this application is to provide a vehicle-mounted micro speaker array, including: a plurality of micro speakers installed on the center console of the vehicle, and the arrangement spacing between the micro speakers Obtained according to the method for controlling the in-vehicle sound field based on the micro speaker array.
为解决上述技术问题，本申请采用的再一个技术方案是：提供一种基于微型扬声器阵列的车内声场控制装置，该车内声场控制装置包括处理器、与处理器耦接的存储器，其中，存储器存储有用于实现上述所述的基于微型扬声器阵列的车内声场控制方法的程序指令；处理器用于执行存储器存储的程序指令以控制车内声场。In order to solve the above technical problems, another technical solution adopted in this application is to provide an in-vehicle sound field control device based on a micro speaker array. The in-vehicle sound field control device includes a processor and a memory coupled to the processor, wherein, The memory stores program instructions for implementing the above-mentioned micro speaker array-based in-vehicle sound field control method; the processor is used to execute the program instructions stored in the memory to control the in-vehicle sound field.
为解决上述技术问题，本申请采用的再一个技术方案是：提供一种存储装置，存储有能够实现上述基于微型扬声器阵列的车内声场控制方法的程序文件。In order to solve the above technical problem, another technical solution adopted in this application is to provide a storage device that stores program files capable of realizing the above-mentioned in-vehicle sound field control method based on the micro speaker array.
本申请的有益效果是：利用车载微型扬声器厚度薄、尺寸小的特点，在车内有限的空间内形成微型扬声器阵列，通过对音频信号进行抵消处理，一方面增加了声音重放左右声道的平衡性，避免了左右声道的失衡；另一方面，中央声道的声音居于用户位置的正前方，一方面增加了重放声场声 像的稳定性；还有一方面，极大的拓宽了整车声音重放的声场，使得用户的感知声源宽度变宽广。The beneficial effects of this application are: taking advantage of the thin thickness and small size of the vehicle-mounted micro-speaker, a micro-speaker array is formed in a limited space in the car, and the audio signal is canceled. Balance, to avoid the imbalance of the left and right channels; on the other hand, the sound of the center channel is located directly in front of the user's position, on the one hand, it increases the stability of the sound image of the playback sound field; on the other hand, it greatly broadens The sound field of the whole vehicle sound reproduction makes the width of the user's perceived sound source wider.
【附图说明】【Explanation of the drawings】
图1为本申请第一实施例的基于微型扬声器阵列的车内声场控制方法的流程示意图；FIG. 1 is a schematic flowchart of a method for controlling an in-vehicle sound field based on a micro speaker array according to a first embodiment of the application;
图2为本申请实施例的微型扬声器阵列的排布示意图；2 is a schematic diagram of the arrangement of a micro speaker array according to an embodiment of the application;
图3为本申请第二实施例的基于微型扬声器阵列的车内声场控制方法的流程示意图；3 is a schematic flowchart of a method for controlling a sound field in a vehicle based on a micro speaker array according to a second embodiment of the application;
图4为本申请实施例的用户接收微型扬声器阵列发出的音频信号的示意图；4 is a schematic diagram of a user receiving an audio signal from a micro speaker array according to an embodiment of the application;
图5为本申请实施例的第三实施例的基于微型扬声器阵列的车内声场控制方法的流程示意图；FIG. 5 is a schematic flowchart of a method for controlling an in-vehicle sound field based on a micro speaker array according to a third embodiment of an embodiment of the application; FIG.
图6为本申请实施例的用户的听感体验示意图；FIG. 6 is a schematic diagram of a user's hearing experience according to an embodiment of the application;
图7为本申请实施例的基于微型扬声器阵列的车内声场控制装置的结构示意图；FIG. 7 is a schematic structural diagram of an in-vehicle sound field control device based on a micro speaker array according to an embodiment of the application;
图8为本申请实施例的存储装置的结构示意图。FIG. 8 is a schematic structural diagram of a storage device according to an embodiment of the application.
【具体实施方式】【Detailed ways】
下面结合附图和实施方式对本申请作进一步说明。The application will be further described below in conjunction with the drawings and implementations.
图1是本申请第一实施例的基于微型扬声器阵列的车内声场控制方法的流程示意图。需注意的是，若有实质上相同的结果，本申请的方法并不以图1所示的流程顺序为限。本申请的微型扬声器阵列设置在中控台的正上方，微型扬声器阵列包括多个微型扬声器，基于微型扬声器阵列的车内声场控制方法包括对微型扬声器阵列的排布间距的控制和对聩给每个微型扬声器的音频信号的控制。如图1所示，该方法包括步骤：FIG. 1 is a schematic flowchart of a method for controlling a sound field in a vehicle based on a micro speaker array according to a first embodiment of the present application. It should be noted that if there is substantially the same result, the method of the present application is not limited to the sequence of the process shown in FIG. 1. The micro speaker array of the present application is arranged directly above the center console. The micro speaker array includes a plurality of micro speakers. The in-vehicle sound field control method based on the micro speaker array includes the control of the arrangement pitch of the micro speaker array and the control of the micro speaker array. Control of the audio signal of a miniature speaker. As shown in Figure 1, the method includes steps:
步骤S101：获取位于用户左侧的一个或多个微型扬声器发出的第一音频信号，同时获取位于用户右侧的一个或多个微型扬声器发出的第二音频信号，第一音频信号包括第一左声道信号和第一右声道信号，第二音频信号包括第二左声道信号和第二右声道信号。Step S101: Acquire a first audio signal from one or more micro speakers on the left side of the user, and at the same time acquire a second audio signal from one or more micro speakers on the right side of the user, the first audio signal includes the first left The channel signal and the first right channel signal, and the second audio signal includes the second left channel signal and the second right channel signal.
在步骤S101中，微型扬声器的个数和类型不作具体限定，多个微型扬声器呈中心轴对称设置，微型扬声器之间排布间距能够根据不同的用户听感体验进行个性化优化，从而提升车内每个用户的听感体验。本实施例以微型扬声器阵列包括六个微型扬声器为例进行说明，请参见图2，六个微型扬声器由左至右依次标号为#1、#2、#3、#4、#5、#6。每个微型扬声器 输出的音频信号均包括左声道信号和右声道信号，其中，#1号微型扬声器和#3号微型扬声器之间的排布间距为l，#4号微型扬声器和#6号微型扬声器之间的排布间距也为l；#3号微型扬声器和#4号微型扬声器之间的排布间距为d；#2号微型扬声器位于主驾驶位置的正前方，#5号微型扬声器位于副驾驶位置的正前方。因此，对于主驾驶位置而言，位于用户左侧的扬声器为#1号微型扬声器，位于用户右侧的扬声器包括#3号微型扬声器、#4号微型扬声器、#5号微型扬声器以及#6号微型扬声器；对于副驾驶位置而言，位于用户左侧的扬声器包括#1号微型扬声器、#2号微型扬声器、#3号微型扬声器以及#4号微型扬声器，位于用户右侧的扬声器为#6号微型扬声器。In step S101, the number and types of micro speakers are not specifically limited. The multiple micro speakers are arranged symmetrically on the central axis, and the spacing between the micro speakers can be personalized and optimized according to different users’ listening experience, thereby enhancing the interior of the car. The listening experience of each user. In this embodiment, the micro speaker array includes six micro speakers as an example. Please refer to Figure 2. The six micro speakers are numbered #1, #2, #3, #4, #5, #6 from left to right. . The audio signal output by each micro speaker includes the left channel signal and the right channel signal. Among them, the arrangement distance between the #1 micro speaker and the #3 micro speaker is 1, the #4 micro speaker and #6 The arrangement distance between No. 3 micro speakers is also l; the arrangement distance between No. 3 mini speakers and No. 4 micro speakers is d; No. 2 mini speakers are located directly in front of the main driving position, and #5 mini speakers are located in front of the main driving position. The speaker is located directly in front of the co-pilot position. Therefore, for the main driving position, the speaker on the user's left is #1 micro speaker, and the speaker on the user's right includes #3 micro speaker, #4 micro speaker, #5 micro speaker, and #6 Micro speakers; for the passenger position, the speakers on the user's left include #1 micro speakers, #2 micro speakers, #3 micro speakers, and #4 micro speakers. The speaker on the user's right is #6 No. Micro speakers.
步骤S102：分别对第一右声道信号和第二左声道信号进行信号抵消处理。Step S102: Perform signal cancellation processing on the first right channel signal and the second left channel signal respectively.
在步骤S102中，对第一右声道信号进行信号抵消处理，以使位于用户左侧的一个或多个微型扬声器发出的第一右声道信号可以抵消其他微型扬声器传入左耳的第二右声道信号，此时，用户的左耳只听到第一左声道信号；对第二左声道信号进行信号抵消处理，以使位于用户右侧的一个或多个微型扬声器发出的第二左声道信号可以抵消其他微型扬声器传入右耳的 第一左声道信号，此时，用户的右耳只听到第二右声道信号。信号抵消处理可以针对全频域的信号也可以是分频段的信号，信号抵消处理的方式包括但不限于相位调整、延迟调整以及幅度调整。In step S102, signal cancellation processing is performed on the first right channel signal, so that the first right channel signal emitted by one or more micro speakers located on the left side of the user can cancel the second right channel signal transmitted from other micro speakers to the left ear. Right channel signal. At this time, the user’s left ear only hears the first left channel signal; the second left channel signal is processed to cancel the signal, so that the second left channel signal is emitted by one or more micro speakers on the user’s right side. The second left channel signal can cancel the first left channel signal from other micro speakers to the right ear. At this time, the user's right ear only hears the second right channel signal. The signal cancellation processing can be for a full frequency domain signal or a sub-band signal. The signal cancellation processing method includes but is not limited to phase adjustment, delay adjustment, and amplitude adjustment.
请参见图3，步骤S102包括以下步骤：Referring to Fig. 3, step S102 includes the following steps:
步骤S301：预设第一右声道信号的第一调整策略和第二左声道信号的第二调整策略，第一调整策略和第二调整策略均包括相位调整、延迟调整和幅度调整的一种或多种；Step S301: Preset a first adjustment strategy for the first right channel signal and a second adjustment strategy for the second left channel signal. Both the first adjustment strategy and the second adjustment strategy include phase adjustment, delay adjustment, and amplitude adjustment. Kind or more
在步骤S301中，#1～#6号微型扬声器的音频信号分别按照如下方式表示：In step S301, the audio signals of the #1 to #6 miniature speakers are respectively expressed as follows:
#1：
Figure PCTCN2020085843-appb-000001
#1:
Figure PCTCN2020085843-appb-000001
#2：
Figure PCTCN2020085843-appb-000002
#2:
Figure PCTCN2020085843-appb-000002
#3：
Figure PCTCN2020085843-appb-000003
#3:
Figure PCTCN2020085843-appb-000003
#4：
Figure PCTCN2020085843-appb-000004
#4:
Figure PCTCN2020085843-appb-000004
#5：
Figure PCTCN2020085843-appb-000005
#5:
Figure PCTCN2020085843-appb-000005
#6：
Figure PCTCN2020085843-appb-000006
#6:
Figure PCTCN2020085843-appb-000006
其中，L、R分别表示原始音频信号中左声道信号和右声道的信号；A表示信号的幅度；τ表示信号的起始时间；
Figure PCTCN2020085843-appb-000007
表示信号的起始相位；Δτ 1与Δτ 2表 示与原始音频信号之间的延迟；α、β 1、β 2、γ 1、γ 2表示相关系数。 Among them, L and R respectively represent the left channel signal and the right channel signal in the original audio signal; A represents the amplitude of the signal; τ represents the start time of the signal;
Figure PCTCN2020085843-appb-000007
Indicates the initial phase of the signal; Δτ 1 and Δτ 2 indicate the delay from the original audio signal; α, β 1 , β 2 , γ 1 , and γ 2 indicate correlation coefficients.
步骤S302：根据第一调整策略、第二调整策略以及各个微型扬声器的声学传递函数确定用户的双耳接收到的声音信号；Step S302: Determine the sound signal received by the two ears of the user according to the first adjustment strategy, the second adjustment strategy, and the acoustic transfer function of each micro-speaker;
在步骤S302中，在#2号微型扬声器和#5号微型扬声器不工作的情况下，请参见图4，位于主驾驶位置的用户左耳接收到的声音信号L Ear为： In step S302, when the #2 micro-speaker and the #5 micro-speaker are not working, referring to Fig. 4, the sound signal L Ear received by the left ear of the user in the main driving position is:
L Ear＝S(1)*H 1(l，d)+S(3)*H 3(l，d)+S(4)*H 5(l，d)；其中，*表示卷积运算。 L Ear = S(1)*H 1 (l, d)+S(3)*H 3 (l, d)+S(4)*H 5 (l, d); where * means convolution operation.
位于主驾驶位置的用户右耳接收到的声音信号R Ear为： The sound signal R Ear received by the user's right ear at the main driving position is:
R Ear＝S(1)*H 2(l，d)+S(3)*H 4(l，d)+S(4)*H 6(l，d)。其中， R Ear = S(1)*H 2 (l, d)+S(3)*H 4 (l, d)+S(4)*H 6 (l, d). in,
由于#6号微型扬声器距离主驾驶位置较远，对主驾驶位置的听感贡献较小，因此，在上述计算中忽略接收#6号微型扬声器的声音信号。l为#1号微型扬声器和#3号微型扬声器之间的排布间距，d为#3号微型扬声器和#4号微型扬声器之间的排布间距，声学传递函数根据所述微型扬声器之间的排布间距确定，H 1(l，d)为用户的左耳接收#1号微型扬声器的音频信号的声学传递函数，H 2(l，d)为用户的右耳接收#1号微型扬声器的音频信号的声学传递函数，H 3(l，d)为用户的左耳接收#3号微型扬声器的音频信号的声学传递函数，H 4(l，d)为用户的右耳接收#3号微型扬声器的音频信号的声学传 递函数，H 5(l，d)为用户的左耳接收#4号微型扬声器的音频信号的声学传递函数，H 6(l，d)为用户的右耳接收#4号微型扬声器的音频信号的声学传递函数。 Since the #6 micro-speaker is far from the main driving position and contributes little to the hearing perception of the main driving position, the sound signal of the #6 micro-speaker is ignored in the above calculation. l is the arrangement spacing between #1 micro speakers and #3 micro speakers, d is the arrangement spacing between #3 micro speakers and #4 micro speakers, and the acoustic transfer function is based on the spacing between the micro speakers. H 1 (l, d) is the acoustic transfer function of the audio signal of the user's left ear receiving #1 micro speaker, H 2 (l, d) is the user's right ear receiving #1 micro speaker The acoustic transfer function of the audio signal, H 3 (l, d) is the acoustic transfer function of the user’s left ear receiving the audio signal of the #3 mini speaker, H 4 (l, d) is the user’s right ear receiving #3 The acoustic transfer function of the audio signal of the micro speaker, H 5 (l, d) is the acoustic transfer function of the user’s left ear receiving the audio signal of the #4 micro speaker, H 6 (l, d) is the user’s right ear receiving# The acoustic transfer function of the audio signal of the No. 4 micro speaker.
在#2号微型扬声器和#5号微型扬声器不工作的情况下，请参见图4，位于副驾驶位置的用户左耳接收到的声音信号L Ear为： When the #2 micro speaker and #5 micro speaker do not work, please refer to Figure 4, the sound signal L Ear received by the left ear of the user in the co-pilot position is:
L Ear＝S(6)*H 8(l，d)+S(4)*H 10(l，d)+S(3)*H 12(l，d)；其中， L Ear =S(6)*H 8 (l,d)+S(4)*H 10 (l,d)+S(3)*H 12 (l,d); where,
位于副驾驶位置的用户右耳接收到的声音信号R Ear为： The sound signal R Ear received by the user's right ear at the front passenger position is:
R Ear＝S(6)*H 7(l，d)+S(4)*H 9(l，d)+S(3)*H 11(l，d)。其中， R Ear = S(6)*H 7 (l, d)+S(4)*H 9 (l, d)+S(3)*H 11 (l, d). in,
由于#1号微型扬声器距离副驾驶位置较远，对副驾驶位置的听感贡献较小，因此，在上述计算中忽略接收#1号微型扬声器的声音信号。l为#1号微型扬声器和#3号微型扬声器之间的排布间距，d为#3号微型扬声器和#4号微型扬声器之间的排布间距，H 8(l，d)为用户的左耳接收#6号微型扬声器的音频信号的声学传递函数，H 7(l，d)为用户的右耳接收#6号微型扬声器的音频信号的声学传递函数，H 10(l，d)为用户的左耳接收#4号微型扬声器的音频信号的声学传递函数，H 9(l，d)为用户的右耳接收#4号微型扬声器的音频信号的声学传递函数，H 12(l，d)为用户的左耳接收#3号微型扬声器的音频信号的声学传递函数，H 11(l，d)为用户的右耳接收#3号微型扬声器 的音频信号的声学传递函数。 Since the #1 micro-speaker is far away from the co-pilot position and contributes little to the hearing perception of the co-pilot position, the sound signal of the #1 micro-speaker is ignored in the above calculation. l is the spacing between the #1 micro speakers and the #3 micro speakers, d is the spacing between the #3 micro speakers and the #4 micro speakers, H 8 (l, d) is the user’s The left ear receives the acoustic transfer function of the audio signal of the #6 micro speaker, H 7 (l, d) is the acoustic transfer function of the user’s right ear receiving the audio signal of the #6 micro speaker, H 10 (l, d) is The acoustic transfer function of the audio signal of the user’s left ear receiving the #4 mini speaker, H 9 (l, d) is the acoustic transfer function of the user’s right ear receiving the audio signal of the #4 mini speaker, H 12 (l, d ) Is the acoustic transfer function of the user's left ear receiving the audio signal of the #3 micro-speaker, and H 11 (l, d) is the acoustic transfer function of the user's right ear receiving the audio signal of the #3 micro-speaker.
步骤S303：根据声音信号确定第一调整策略的相关系数、第二调整策略的相关系数以及各个微型扬声器之间的排布间距。Step S303: Determine the correlation coefficient of the first adjustment strategy, the correlation coefficient of the second adjustment strategy, and the arrangement spacing between the micro speakers according to the sound signal.
在步骤S303中，分别获取主驾驶位置上用户的双耳的声音信号，并计算双耳之间的声音信号的第一强度差和第一时间差；基于最优解方法，根据第一调整策略、第二调整策略、第一强度差和第一时间差获得第一调整策略的相关系数以及各个微型扬声器之间的排布间距。In step S303, the sound signals of the two ears of the user at the main driving position are respectively obtained, and the first intensity difference and the first time difference of the sound signals between the two ears are calculated; based on the optimal solution method, according to the first adjustment strategy, The second adjustment strategy, the first intensity difference, and the first time difference obtain the correlation coefficient of the first adjustment strategy and the arrangement spacing between each micro-speaker.
具体地，对主驾驶位置上的用户，双耳之间的声音信号的第一强度差和第一时间差按照如下公式进行计算：Specifically, for the user at the main driving position, the first intensity difference and the first time difference of the sound signals between the ears are calculated according to the following formula:
Δ Ear＝|L Ear-R Ear|＝(ΔIID 1，ΔITD 1) Δ Ear =|L Ear -R Ear |=(ΔIID 1 ,ΔITD 1 )
Figure PCTCN2020085843-appb-000008
Figure PCTCN2020085843-appb-000008
Figure PCTCN2020085843-appb-000009
Figure PCTCN2020085843-appb-000009
min{ΔIID 1} min{ΔIID 1 }
min{ΔITD 1} min{ΔITD 1 }
其中，ΔIID 1为第一强度差，ΔITD 1为第一时间差。通过以主驾驶位置的用户为优化对象，能够确定α、β 1、Δτ 1、l、d。 Among them, ΔIID 1 is the first intensity difference, and ΔITD 1 is the first time difference. By targeting the user at the main driving position as the optimization target, α, β 1 , Δτ 1 , l, d can be determined.
分别获取副驾驶位置上用户的双耳接收到的声音信号，并计算双耳之间的声音信号的第二强度差和第二时间差；基于最优解方法，根据第一调 整策略、第二调整策略第二强度差和第二时间差获得第二调整策略的相关系数。Obtain the sound signals received by the user's ears at the co-pilot position, and calculate the second intensity difference and the second time difference of the sound signals between the ears; based on the optimal solution method, according to the first adjustment strategy and the second adjustment The second intensity difference of the strategy and the second time difference obtain the correlation coefficient of the second adjustment strategy.
具体地，对副驾驶位置上的用户，双耳之间的声音信号的第二强度差和第二时间差按照如下公式进行计算：Specifically, for the user at the co-pilot position, the second intensity difference and the second time difference of the sound signals between the ears are calculated according to the following formula:
Δ Ear＝|L Ear-R Ear|＝(ΔIID 2，ΔITD 2) Δ Ear =|L Ear -R Ear |=(ΔIID 2 ,ΔITD 2 )
Figure PCTCN2020085843-appb-000010
Figure PCTCN2020085843-appb-000010
Figure PCTCN2020085843-appb-000011
Figure PCTCN2020085843-appb-000011
min{ΔIID 2} min{ΔIID 2 }
min{ΔITD 2} min{ΔITD 2 }
其中，ΔIID 2为第二强度差，ΔITD 2为第二时间差。通过以副驾驶位置的用户为优化对象，能够确定β 2、Δτ 2。 Among them, ΔIID 2 is the second intensity difference, and ΔITD 2 is the second time difference. By optimizing the user at the position of the co-pilot, β 2 and Δτ 2 can be determined.
步骤S103：根据信号抵消处理结果获得与第一右声道信号对应的第一抵消信号和与第二左声道信号对应的第二抵消信号。Step S103: Obtain a first cancellation signal corresponding to the first right channel signal and a second cancellation signal corresponding to the second left channel signal according to the signal cancellation processing result.
在步骤S103中，根据第一调整策略的相关系数获得与第一右声道信号对应的第一抵消信号，第一抵消信号能够抵消位于用户右侧的一个或多个微型扬声器发出的第二右声道信号，使用户的左耳只听到第一左声道信号；根据第二调整策略的相关系数获得与第二左声道信号对应的第二抵消信号，第二抵消信号能够抵消位于用户左侧的一个或多个微型扬声器发出的第一 左声道信号，使用户的右耳只听到第二右声道信号。In step S103, a first cancellation signal corresponding to the first right channel signal is obtained according to the correlation coefficient of the first adjustment strategy. Channel signal, so that the user’s left ear can only hear the first left channel signal; according to the correlation coefficient of the second adjustment strategy, the second cancellation signal corresponding to the second left channel signal is obtained. The first left channel signal from one or more micro speakers on the left makes the user's right ear only hear the second right channel signal.
步骤S104：输出第一抵消信号和第一左声道信号给位于用户左侧的微型扬声器，同时输出第二抵消信号和第二右声道信号给位于用户右侧的微型扬声器。Step S104: Output the first cancellation signal and the first left channel signal to the micro speaker on the left side of the user, and simultaneously output the second cancellation signal and the second right channel signal to the micro speaker on the right side of the user.
在步骤S104中，当α、β 1、Δτ 1、l、d、β 2、Δτ 2均确定后，按照计算出来的排布间距排布#1～#6号微型扬声器，以形成微型扬声器阵列，并分别聩给#1～#6号微型扬声器上述理论计算的音频信号。 In step S104, when α, β 1 , Δτ 1 , l, d, β 2 , and Δτ 2 are all determined, #1～#6 micro speakers are arranged according to the calculated arrangement pitch to form a micro speaker array , And respectively feed the audio signals calculated by the above theory to the #1～#6 micro speakers.
步骤S105：获取位于用户的正前方的微型扬声器发出的中央声道信号。Step S105: Obtain the center channel signal from the micro speaker located directly in front of the user.
本实施例中，#2号微型扬声器、#5号微型扬声器输出中央声道信号，中央声道信号包括左声道信号和右声道信号。In this embodiment, the #2 micro speaker and the #5 micro speaker output a center channel signal, and the center channel signal includes a left channel signal and a right channel signal.
步骤S106：对中央声道信号进行补偿人声音色处理并输出处理后的中央声道信号给位于用户的正前方的微型扬声器。Step S106: Perform human voice compensation processing on the center channel signal and output the processed center channel signal to the micro speaker located directly in front of the user.
在步骤S106中，请参见图5，还包括：In step S106, refer to FIG. 5, which also includes:
步骤S501：实时获取用户对中央声道信号的听觉反馈信息；Step S501: Acquire the user's auditory feedback information on the center channel signal in real time;
步骤S502：根据听觉反馈信息确定中央声道信号的增益。Step S502: Determine the gain of the center channel signal according to the auditory feedback information.
具体地，调节#2号微型扬声器和#号微型扬声器5作为中央声道的增益，达到与其他微型扬声器平衡的听感为止，以确定#2号微型扬声器的增益γ 1 和#5号微型扬声器的增益γ 2。首先分别获取位于主驾驶位置正前方的微型扬声器发出的第一中央声道信号和位于副驾驶位置正前方的微型扬声器发出的第二中央声道信号；然后实时获取用户对第一中央声道信号和第二中央声道信号的听觉反馈信息；最后根据听觉反馈信息分别对第一中央声道信号和第二中央声道信号进行增益调整，获得第一中央声道信号的增益γ 1和第二中央声道信号的增益γ 2。 Specifically, the micro-speaker adjusted numbers # 2 and # 5 as the gain of the micro speaker of the center channel, reaches a balance with other miniature loudspeaker sense of hearing to determine the gain γ numbers # 1, No. 2 and the miniature loudspeaker miniature loudspeaker # 5 The gain γ 2 . First obtain the first center channel signal from the micro speaker directly in front of the main driving position and the second center channel signal from the micro speaker directly in front of the co-pilot position; then obtain the user's first center channel signal in real time And the auditory feedback information of the second center channel signal; finally, according to the auditory feedback information, the gain adjustment of the first center channel signal and the second center channel signal are performed to obtain the gain γ 1 of the first center channel signal and the second center channel signal. The gain of the center channel signal γ 2 .
在步骤S502之后，还包括：After step S502, it further includes:
步骤S503：实时获取用户对中央声道信号的听觉反馈信息；Step S503: Acquire the user's auditory feedback information on the center channel signal in real time;
步骤S504：根据听觉反馈信息对中央声道信号进行音色补偿处理；Step S504: Perform timbre compensation processing on the center channel signal according to the auditory feedback information;
步骤S505：输出处理后的中央声道信号给位于用户的正前方的微型扬声器。Step S505: Output the processed center channel signal to the micro speaker located directly in front of the user.
具体地，在确定了#2号微型扬声器的增益γ 1和#5号微型扬声器的增益γ 2后，再通过均衡处理，调节人声音色至理想听感(如图6所示)。#2号微型扬声器的增益γ 1和#5号微型扬声器的增益γ 2的具体值确定和音色补偿的均衡调节，可根据实际整车情况和用户(或调试员)的主观感受做不同的设定。 Specifically, after determining the gain γ No. 2 micro speaker # 1 # 5 and No. miniature loudspeaker gain γ 2, through the equalization process, regulation of human sense of hearing the sound to the desired color (Figure 6). # Gain γ No. 2 and No. 1 of the micro speaker # 5 miniature loudspeaker gain γ specific value of 2 is determined and tone compensation equalizer adjustment can be done with different settings based on the actual vehicle conditions and the user (or setter) subjective feelings Certainly.
本申请第一实施例的基于微型扬声器阵列的车内声场控制方法通过对 位于用户左侧的一个或多个微型扬声器发出的右声道信号和位于用户右侧的一个或多个微型扬声器发出的左声道信号进行信号抵消处理，以增加声音重放左右声道的平衡性，避免了左右声道的失衡。通过微型扬声器发出的中央声道信号居于用户位置的正前方的，一方面增加了重放声场声像的稳定性，另一方面，极大的拓宽了整车声音重放的声场，使得用户的感知声源宽度变宽广，听觉上的声音宽度远大于视觉物理上的微型扬声器间距宽度。The in-car sound field control method based on the micro speaker array of the first embodiment of the present application transmits the right channel signal to one or more micro speakers located on the left side of the user and the one or more micro speakers located on the right side of the user. The left channel signal undergoes signal cancellation processing to increase the balance of the left and right channels in the sound reproduction and avoid the imbalance of the left and right channels. The center channel signal sent by the micro-speaker is located directly in front of the user’s position. On the one hand, it increases the stability of the sound image of the playback sound field. On the other hand, it greatly expands the sound field of the vehicle sound playback, making the user The perceived sound source width becomes wider, and the auditory sound width is much larger than the visual and physical micro-speaker pitch width.
图2是本申请实施例的车载微型扬声器阵列的排布示意图。微型扬声器阵列包括安装在车辆的中控台上的多个微型扬声器。利用车载微型扬声器厚度薄、尺寸小的特点，在车内有限的空间内，布置形成微型扬声器阵列。微型扬声器的个数和类型不作具体限定，多个微型扬声器呈中心轴对称设置，微型扬声器之间排布间距能够根据不同的用户听感体验进行个性化优化，从而提升车内每个用户的听感体验。本实施例中所采用的微型扬声器优选为尺寸为30mm x 60mm x 12mm的动圈式扬声器，微型扬声器之间的排布距离根据上述的基于微型扬声器阵列的车内声场控制方法获得。Fig. 2 is a schematic diagram of the arrangement of a vehicle-mounted micro speaker array according to an embodiment of the present application. The micro speaker array includes a plurality of micro speakers installed on the center console of the vehicle. Taking advantage of the thin thickness and small size of the vehicle-mounted micro-speaker, the micro-speaker array is arranged in the limited space in the car. The number and type of micro speakers are not specifically limited. Multiple micro speakers are arranged symmetrically on the central axis. The spacing between the micro speakers can be personalized and optimized according to different users’ listening experience, thereby enhancing the listening experience of each user in the car. Sense of experience. The micro speakers used in this embodiment are preferably moving coil speakers with a size of 30 mm x 60 mm x 12 mm, and the arrangement distance between the micro speakers is obtained according to the above-mentioned in-vehicle sound field control method based on the micro speaker array.
以微型扬声器阵列包括六个微型扬声器为例进行说明，请参见图2，六个微型扬声器由左至右依次标号为#1、#2、#3、#4、#5、#6。每个微型扬 声器输出的音频信号均包括左声道和右声道，其中，#1号微型扬声器和#3号微型扬声器之间的排布间距为l，#4号微型扬声器和#6号微型扬声器之间的排布间距也为l；#3号微型扬声器和#4号微型扬声器之间的排布间距为d；#2号微型扬声器位于主驾驶位置的正前方，#5号微型扬声器位于副驾驶位置的正前方。Take the micro-speaker array including six micro-speakers as an example for description. Please refer to Figure 2. The six micro-speakers are numbered #1, #2, #3, #4, #5, #6 from left to right. The audio signal output by each micro speaker includes the left channel and the right channel. The spacing between the #1 micro speaker and the #3 micro speaker is l, the #4 micro speaker and the #6 micro speaker are arranged at a distance of 1. The spacing between the speakers is also l; the spacing between the #3 micro speakers and the #4 micro speakers is d; the #2 micro speakers are located directly in front of the main driving position, and the #5 micro speakers are located Directly in front of the co-pilot's position.
#1～#6微型扬声器的音频信号分别按照如下方式表示：The audio signals of #1～#6 micro speakers are expressed as follows:
#1：
Figure PCTCN2020085843-appb-000012
#1:
Figure PCTCN2020085843-appb-000012
#2：
Figure PCTCN2020085843-appb-000013
#2:
Figure PCTCN2020085843-appb-000013
#3：
Figure PCTCN2020085843-appb-000014
#3:
Figure PCTCN2020085843-appb-000014
#4：
Figure PCTCN2020085843-appb-000015
#4:
Figure PCTCN2020085843-appb-000015
#5：
Figure PCTCN2020085843-appb-000016
#5:
Figure PCTCN2020085843-appb-000016
#6：
Figure PCTCN2020085843-appb-000017
#6:
Figure PCTCN2020085843-appb-000017
其中，L、R分别表示原始音频信号中左声道信号和右声道的信号；A表示信号的幅度；τ表示信号的起始时间；
Figure PCTCN2020085843-appb-000018
表示信号的起始相位；Δτ 1与Δτ 2表示与原始音频信号之间的延迟；α、β 1、β 2、γ 1、γ 2表示相关系数。 Among them, L and R respectively represent the left channel signal and the right channel signal in the original audio signal; A represents the amplitude of the signal; τ represents the start time of the signal;
Figure PCTCN2020085843-appb-000018
Indicates the initial phase of the signal; Δτ 1 and Δτ 2 indicate the delay from the original audio signal; α, β 1 , β 2 , γ 1 , and γ 2 indicate correlation coefficients.
请参阅图7，图7为本申请实施例的基于微型扬声器阵列的车内声场控制装置的结构示意图。如图7所示，该车内声场控制装置70包括处理器 71及和处理器71耦接的存储器72。Please refer to FIG. 7. FIG. 7 is a schematic structural diagram of an in-vehicle sound field control device based on a micro speaker array according to an embodiment of the application. As shown in FIG. 7, the in-vehicle sound field control device 70 includes a processor 71 and a memory 72 coupled to the processor 71.
存储器72存储有用于实现上述任一实施例的基于微型扬声器阵列的车内声场控制方法的程序指令。The memory 72 stores program instructions for implementing the method for controlling the in-vehicle sound field based on the micro-speaker array of any of the above embodiments.
处理器71用于执行存储器72存储的程序指令以控制车内声场。The processor 71 is configured to execute program instructions stored in the memory 72 to control the sound field in the vehicle.
其中，处理器71还可以称为CPU(Central Processing Unit，中央处理单元)。处理器71可能是一种集成电路芯片，具有信号的处理能力。处理器71还可以是通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现成可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。The processor 71 may also be referred to as a CPU (Central Processing Unit, central processing unit). The processor 71 may be an integrated circuit chip with signal processing capabilities. The processor 71 may also be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component . The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
参阅图8，图8为本申请实施例的存储装置的结构示意图。本申请实施例的存储装置存储有能够实现上述所有方法的程序文件81，其中，该程序文件81可以以软件产品的形式存储在上述存储装置中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本申请各个实施方式所述方法的全部或部分步骤。而前述的存储装置包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者 光盘等各种可以存储程序代码的介质，或者是计算机、服务器、手机、平板等终端设备。Refer to FIG. 8, which is a schematic structural diagram of a storage device according to an embodiment of the application. The storage device in this embodiment of the present application stores a program file 81 that can implement all the above methods. The program file 81 can be stored in the above storage device in the form of a software product, and includes a number of instructions to enable a computer device (which can It is a personal computer, a server, or a network device, etc.) or a processor (processor) that executes all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage devices include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disks or optical disks and other media that can store program codes. , Or terminal devices such as computers, servers, mobile phones, and tablets.
在本申请所提供的几个实施例中，应该理解到，所揭露的***，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个***，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method can be implemented in other ways. For example, the device embodiments described above are merely illustrative, for example, the division of units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or integrated. To another system, or some features can be ignored, or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。In addition, the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
以上所述的仅是本申请的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本申请创造构思的前提下，还可以做出改进，但这些均属于本申请的保护范围。The above are only the implementation manners of this application. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the creative concept of this application, but these all belong to this application. The scope of protection.

Claims (10)

  1. 一种基于微型扬声器阵列的车内声场控制方法，所述微型扬声器阵列包括多个微型扬声器，其特征在于，包括：An in-vehicle sound field control method based on a micro speaker array. The micro speaker array includes a plurality of micro speakers, and is characterized in that it includes:
    获取位于用户左侧的一个或多个微型扬声器发出的第一音频信号，同时获取位于所述用户右侧的一个或多个微型扬声器发出的第二音频信号，所述第一音频信号包括第一左声道信号和第一右声道信号，所述第二音频信号包括第二左声道信号和第二右声道信号；Acquire the first audio signal emitted by one or more micro speakers located on the left side of the user, and at the same time obtain the second audio signal emitted by one or more micro speakers located on the right side of the user, the first audio signal includes the first audio signal A left channel signal and a first right channel signal, the second audio signal includes a second left channel signal and a second right channel signal;
    分别对所述第一右声道信号和所述第二左声道信号进行信号抵消处理；Performing signal cancellation processing on the first right channel signal and the second left channel signal respectively;
    根据信号抵消处理结果获得与所述第一右声道信号对应的第一抵消信号和与所述第二左声道信号对应的第二抵消信号；Obtaining a first cancellation signal corresponding to the first right channel signal and a second cancellation signal corresponding to the second left channel signal according to a signal cancellation processing result;
    输出所述第一抵消信号和所述第一左声道信号给位于所述用户左侧的微型扬声器，同时输出所述第二抵消信号和所述第二右声道信号给位于所述用户右侧的微型扬声器；The first cancellation signal and the first left channel signal are output to the micro speaker located on the left side of the user, and the second cancellation signal and the second right channel signal are output to the micro speaker located on the right side of the user. Micro speakers on the side;
    获取位于所述用户的正前方的微型扬声器发出的中央声道信号；Acquiring a center channel signal from a micro speaker located directly in front of the user;
    对所述中央声道信号进行补偿人声音色处理并输出处理后的所述中央声道信号给位于所述用户的正前方的微型扬声器。Compensating human voice color processing on the center channel signal and outputting the processed center channel signal to a micro speaker located directly in front of the user.
  2. 根据权利要求1所述的方法，其特征在于，所述分别对所述第一右声道信号和所述第二左声道信号进行信号抵消处理的步骤包括：The method according to claim 1, wherein the step of performing signal cancellation processing on the first right channel signal and the second left channel signal respectively comprises:
    预设所述第一右声道信号的第一调整策略和所述第二左声道信号的第二调整策略，所述第一调整策略和所述第二调整策略均包括相位调整、延迟调整和幅度调整中的一种或多种；A first adjustment strategy for the first right channel signal and a second adjustment strategy for the second left channel signal are preset, and both the first adjustment strategy and the second adjustment strategy include phase adjustment and delay adjustment And one or more of amplitude adjustment;
    根据所述第一调整策略、所述第二调整策略以及各个所述微型扬声器的声学传递函数确定所述用户的双耳接收到的声音信号；Determine, according to the first adjustment strategy, the second adjustment strategy, and the acoustic transfer function of each of the micro speakers, the sound signal received by the two ears of the user;
    根据所述声音信号确定所述第一调整策略的相关系数、所述第二调整策略的相关系数以及各个所述微型扬声器之间的排布间距。The correlation coefficient of the first adjustment strategy, the correlation coefficient of the second adjustment strategy, and the arrangement spacing between each of the micro speakers are determined according to the sound signal.
  3. 根据权利要求2所述的方法，其特征在于，所述根据所述声音信号确定所述第一调整策略的相关系数、所述第二调整策略的相关系数以及各个所述微型扬声器之间的排布间距的步骤包括：The method according to claim 2, wherein said determining the correlation coefficient of the first adjustment strategy, the correlation coefficient of the second adjustment strategy, and the row between each of the micro speakers according to the sound signal The steps of cloth spacing include:
    分别获取主驾驶位置上用户的双耳的声音信号，并计算双耳之间的声音信号的第一强度差和第一时间差；Acquire the sound signals of the two ears of the user at the main driving position respectively, and calculate the first intensity difference and the first time difference of the sound signals between the two ears;
    基于最优解方法，根据所述第一调整策略、所述第二调整策略、所述第一强度差和所述第一时间差获得所述第一调整策略的相关系数以及各个 所述微型扬声器之间的排布间距。Based on the optimal solution method, the correlation coefficient of the first adjustment strategy and the correlation coefficient of each of the micro speakers are obtained according to the first adjustment strategy, the second adjustment strategy, the first intensity difference, and the first time difference. The spacing between the layouts.
  4. 根据权利要求3所述的方法，其特征在于，所述根据所述声音信号确定所述第一调整策略的相关系数、所述第二调整策略的相关系数以及各个所述微型扬声器之间的排布间距的步骤还包括：The method according to claim 3, wherein said determining the correlation coefficient of the first adjustment strategy, the correlation coefficient of the second adjustment strategy, and the row between each of the micro speakers according to the sound signal The steps of cloth spacing also include:
    分别获取副驾驶位置上用户的双耳接收到的声音信号，并计算双耳之间的声音信号的第二强度差和第二时间差；Acquire the sound signals received by the ears of the user at the co-pilot position respectively, and calculate the second intensity difference and the second time difference of the sound signals between the ears;
    基于所述最优解方法，根据所述第一调整策略、所述第二调整策略、所述第二强度差和所述第二时间差获得所述第二调整策略的相关系数。Based on the optimal solution method, the correlation coefficient of the second adjustment strategy is obtained according to the first adjustment strategy, the second adjustment strategy, the second intensity difference, and the second time difference.
  5. 根据权利要求4所述的方法，其特征在于，所述根据信号抵消处理结果获得与所述第一右声道信号对应的第一抵消信号和与所述第二左声道信号对应的第二抵消信号的步骤包括：The method according to claim 4, wherein the first cancellation signal corresponding to the first right channel signal and the second cancellation signal corresponding to the second left channel signal are obtained according to the signal cancellation processing result. The steps to cancel the signal include:
    根据所述第一调整策略的相关系数获得与所述第一右声道信号对应的第一抵消信号；Obtaining a first cancellation signal corresponding to the first right channel signal according to the correlation coefficient of the first adjustment strategy;
    根据所述第二调整策略的相关系数获得与所述第二左声道信号对应的第二抵消信号。Obtain a second cancellation signal corresponding to the second left channel signal according to the correlation coefficient of the second adjustment strategy.
  6. 根据权利要求1所述的方法，其特征在于，所述对所述中央声道信 号进行补偿人声音色处理并输出处理后的所述中央声道信号给位于所述用户的正前方的微型扬声器的步骤包括：The method according to claim 1, wherein the processing of compensating the human voice color on the center channel signal and outputting the processed center channel signal to a micro speaker located directly in front of the user The steps include:
    实时获取所述用户对所述中央声道信号的听觉反馈信息；Acquiring the user's auditory feedback information on the center channel signal in real time;
    根据所述听觉反馈信息确定所述中央声道信号的增益。The gain of the center channel signal is determined according to the auditory feedback information.
  7. 根据权利要求6所述的方法，其特征在于，在所述根据所述听觉反馈信息确定所述中央声道信号的增益的步骤之后，还包括：The method according to claim 6, wherein after the step of determining the gain of the center channel signal according to the auditory feedback information, the method further comprises:
    实时获取所述用户对所述中央声道信号的听觉反馈信息；Acquiring the user's auditory feedback information on the center channel signal in real time;
    根据所述听觉反馈信息对所述中央声道信号进行音色补偿处理；Performing timbre compensation processing on the center channel signal according to the auditory feedback information;
    输出处理后的所述中央声道信号给位于所述用户的正前方的微型扬声器。The processed center channel signal is output to a micro speaker located directly in front of the user.
  8. 一种车载微型扬声器阵列，其特征在于，包括安装在车辆的中控台上的多个微型扬声器，所述微型扬声器之间的排布间距根据权利要求1至7任意一项所述的基于微型扬声器阵列的车内声场控制方法获得。A vehicle-mounted micro-speaker array, characterized in that it comprises a plurality of micro-speakers installed on the center console of the vehicle, and the arrangement distance between the micro-speakers is based on the micro-speaker according to any one of claims 1 to 7. The in-car sound field control method of the speaker array is obtained.
  9. 一种基于微型扬声器阵列的车内声场控制装置，其特征在于，包括处理器、与所述处理器耦接的存储器，其中，An in-vehicle sound field control device based on a micro speaker array, which is characterized by comprising a processor and a memory coupled to the processor, wherein:
    所述存储器存储有用于实现如权利要求1-7中任一项所述的基于微型 扬声器阵列的车内声场控制方法的程序指令；The memory stores program instructions for implementing the method for controlling the in-vehicle sound field based on the micro speaker array according to any one of claims 1-7;
    所述处理器用于执行所述存储器存储的所述程序指令以控制车内声场。The processor is configured to execute the program instructions stored in the memory to control the in-vehicle sound field.
  10. 一种存储装置，其特征在于，存储有能够实现如权利要求1-7中任一项所述的基于微型扬声器阵列的车内声场控制方法的程序文件。A storage device, characterized in that it stores a program file capable of realizing the method for controlling the in-vehicle sound field based on the micro speaker array according to any one of claims 1-7.
PCT/CN2020/085843 2020-04-09 2020-04-21 Mini-type speaker array, vehicle interior sound field control method and apparatus, and storage apparatus WO2021203474A1 (en)

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113099373B (en) * 2021-03-29 2022-09-23 腾讯音乐娱乐科技（深圳）有限公司 Sound field width expansion method, device, terminal and storage medium

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090136048A1 (en) * 2007-11-27 2009-05-28 Jae-Hyoun Yoo Apparatus and method for reproducing surround wave field using wave field synthesis
CN107040849A (en) * 2017-04-27 2017-08-11 广州天逸电子有限公司 A kind of method and device for improving three-dimensional phonoreception
CN107251577A (en) * 2015-01-20 2017-10-13 弗劳恩霍夫应用研究促进协会 The loudspeaker arrangement reproduced for three dimensional sound in automobile
CN110267174A (en) * 2019-06-29 2019-09-20 瑞声科技（南京）有限公司 A kind of independent sound field system of car and control system based on Microspeaker

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7561706B2 (en) * 2004-05-04 2009-07-14 Bose Corporation Reproducing center channel information in a vehicle multichannel audio system
US7991176B2 (en) * 2004-11-29 2011-08-02 Nokia Corporation Stereo widening network for two loudspeakers
JP4887420B2 (en) * 2006-03-13 2012-02-29 ドルビー ラボラトリーズ ライセンシング コーポレイション Rendering center channel audio
JP2009530915A (en) * 2006-03-15 2009-08-27 ドルビー・ラボラトリーズ・ライセンシング・コーポレーション 3D sound image
CN101401454A (en) * 2006-03-15 2009-04-01 杜比实验室特许公司 Stereophonic sound imaging
JP4946305B2 (en) * 2006-09-22 2012-06-06 ソニー株式会社 Sound reproduction system, sound reproduction apparatus, and sound reproduction method
CN102883239B (en) * 2012-09-24 2014-09-03 惠州华阳通用电子有限公司 Sound field reappearing method in vehicle
US20150382129A1 (en) * 2014-06-30 2015-12-31 Microsoft Corporation Driving parametric speakers as a function of tracked user location
CN107645689B (en) * 2016-07-22 2021-01-26 展讯通信（上海）有限公司 Method and device for eliminating sound crosstalk and voice coding and decoding chip
CN109121044B (en) * 2017-06-26 2021-04-23 北京小米移动软件有限公司 Earphone crosstalk processing method and device
CN107645699A (en) * 2017-08-25 2018-01-30 西安电子科技大学 A kind of 3D audios intensifier and its method
CN109104686B (en) * 2017-09-30 2019-12-20 惠州市德赛西威汽车电子股份有限公司 Stereo expanding method for automobile sound equipment
CN110719563B (en) * 2018-07-13 2021-04-13 海信视像科技股份有限公司 Method for adjusting stereo sound image and circuit for acquiring stereo sound image

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090136048A1 (en) * 2007-11-27 2009-05-28 Jae-Hyoun Yoo Apparatus and method for reproducing surround wave field using wave field synthesis
CN107251577A (en) * 2015-01-20 2017-10-13 弗劳恩霍夫应用研究促进协会 The loudspeaker arrangement reproduced for three dimensional sound in automobile
CN107040849A (en) * 2017-04-27 2017-08-11 广州天逸电子有限公司 A kind of method and device for improving three-dimensional phonoreception
CN110267174A (en) * 2019-06-29 2019-09-20 瑞声科技（南京）有限公司 A kind of independent sound field system of car and control system based on Microspeaker

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