CN114325586B - Vehicle-mounted multimedia sound positioning system - Google Patents
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Abstract
A vehicle-mounted multimedia sound positioning system comprises a central computing control unit and at least 3 multimedia area units; the multimedia zone unit comprises at least one microphone; the multimedia area unit is electrically connected with the central computing control unit; the central computing control unit comprises a sound signal processing module and a sound positioning module; the sound positioning module is in electrical signal connection with the sound signal processing module; the sound signal processing module receives microphone sound information of more than three multimedia area units, the sound localization module calculates sound delay between a sound source and each microphone, calculates the distance between the sound source and each microphone according to the sound delay, and calculates the space position of the sound source according to the distance between each microphone; the sound signal emitted from the spatial position of the sound source is subjected to an enhancement or attenuation process according to the spatial position of the sound source.
Description
Technical Field
The application belongs to the technical field of vehicle-mounted electronic systems, and particularly relates to a vehicle-mounted multimedia sound positioning system.
Background
In prior art car video telephony systems, sound may come from different locations within the car.
The accuracy of sound source positioning determines the experience of subsequent applications; if the sound source localization is accurate, the target sound source can be well strengthened or weakened; if the sound source localization is inaccurate, a poor user experience is brought about.
Although the microphone array can well locate the sound position, the traditional microphone array is a fixed device, has larger volume and specific processing circuit, as shown in fig. 8,8 MICs form a circle array, the larger the diameter of the circle is, the higher the locating precision is, but the larger the diameter is, the less well the installation position is found in the vehicle interior space.
Disclosure of Invention
In the application, a sound signal processing module in the central computing control unit is adopted to receive sound information from a plurality of microphones, an independent microphone array device is not required to be specially installed, and signals collected by the microphones are concentrated to the central computing control unit by synchronizing the system clocks of the microphone collecting modules, so that sound positioning in a vehicle is better realized. By locating the sound source position, it is possible to filter noise or enhance target speech, or control playback of stereo applications for a particular sound producing position.
The technical scheme for solving the technical problems is that the vehicle-mounted multimedia sound positioning system comprises at least 3 multimedia area units and a central computing control unit; the multimedia zone unit comprises at least one microphone; the multimedia area unit is electrically connected with the central computing control unit; the central computing control unit comprises a sound signal processing module and a sound positioning module; the sound positioning module is in electrical signal connection with the sound signal processing module; the sound signal processing module receives microphone sound information of more than three multimedia area units, the sound localization module calculates sound delay between a sound source and each microphone, calculates the distance between the sound source and each microphone according to the sound delay of the sound information of each microphone, and calculates the space position of the sound source according to the distance between each microphone; the sound signal emitted from the spatial position of the sound source is subjected to an enhancement or attenuation process according to the spatial position of the sound source.
The microphone is connected with the sound signal processing module through an audio signal line.
The vehicle-mounted multimedia sound positioning system further comprises a sound unit, and the central computing control unit and the sound unit are in electric signal connection; the central computing control unit controls the sound units to play audio data, controls the size, time delay and play content of the sound played by each sound unit according to the spatial position of the sound source, and controls the size and stereo effect of the played sound at the spatial position of the sound source.
The multimedia zone unit comprises a sound unit C.
The multimedia area unit comprises a display and a camera; the central computing control unit comprises a video signal module and a camera signal processing module; the display of each multimedia area unit is electrically connected with the video signal module, and the video signal module controls the playing content of the display of each multimedia area unit; the display of each multimedia area unit is electrically connected with a camera signal processing module, and the camera signal processing module receives and processes the image data shot by each camera.
The multimedia regional units comprise regional network modules, the central computing control unit comprises a central network module, and the regional network modules in the multimedia regional units are connected with the central computing control unit through network cables.
The central computing control unit comprises a network time synchronization module, the multimedia area unit comprises a time synchronization module, and the time synchronization module and the network time synchronization module synchronize time information of the central computing control unit and the multimedia area unit. The central computing control unit comprises a central clock synchronization module, the multimedia area unit comprises a clock synchronization module, the central clock synchronization module and the clock synchronization module synchronize clock information, the clock information is used for computing sound delay, and the clock synchronization module is connected with the central clock synchronization module through a clock synchronization signal line.
The microphone sound information of the multimedia area unit received by the sound signal processing module is digital voice coding information, and the digital voice coding information comprises clock information.
The central computing control unit comprises a working mode 1, the working mode 1 locks the set multimedia area unit according to an input instruction, the sound signals sent out by the corresponding spatial positions of the set multimedia area unit are enhanced, the sounds of other areas are weakened, and the central computing control unit drives the sound unit to enhance the sound signals corresponding to the corresponding spatial positions of the set multimedia area unit.
The central computing control unit comprises a working mode 2, and the central computing control unit recognizes voice information sent out by each space position in the vehicle, so that the voice information is enhanced, and non-voice information is reduced; the central computing control unit sends the enhanced voice information through the central network module, receives the voice call information input from the outside through the central network module, and drives the sound unit to play the enhanced voice call information.
The application has the beneficial effects that the same sound signal processing module in the central computing control unit is utilized to receive the microphone sound information of a plurality of multimedia area units, namely, the same sound signal acquisition and processing system is adopted for all the sound signals from different positions, so that the background noise of the sound signal acquisition and processing system is kept consistent for all the input sound signals, thereby facilitating the subsequent sound signal processing. The problem that different system noise floors exist due to the fact that independent sound signal acquisition and processing systems are adopted at different positions is avoided; these noise floors may affect subsequent processing of the voice signal, especially when the distance between different positions of the acquired voice signal is small and the features of the voice signal at different positions are to be distinguished, these noise floors may affect the accuracy of the subsequent processing of the signal, so that the features of the different voice signals cannot be accurately identified, and thus, accurate sound source localization cannot be performed. By using the technical scheme of the application, the sound source localization can be accurately performed due to the consistent noise floor of each sound signal.
The second beneficial effect of the technical scheme is that the microphone is connected with the sound signal processing module through the audio signal line, so that the sound signal entering the sound signal processing module is ensured to be the original sound signal to the maximum extent, and the noise floor introduced in the signal transmission process is further reduced.
The third beneficial effect of the technical scheme is that the central computing control unit controls the size, time delay and playing content of the playing sound of each sound unit according to the space position of the sound source, and controls the size and stereo effect of the playing sound at the space position of the sound source. These played sounds are also part of the sound source signal and may also become part of the noise floor, and when the output sound can be controlled, the representative system has the capability of controlling the spatial position noise floor of the sound source, thereby also reducing the noise floor of the system and reducing the difficulty of subsequent signal processing.
The application has the beneficial effects that the multimedia area unit comprises the sound unit C, so that the multimedia area unit has sound playing capability, the output capability of sound signals is further enriched, and the vehicle-mounted multimedia sound positioning system also has the capability of playing sound at multiple points.
The technical scheme of the application has the beneficial effects that the multimedia area unit comprises a display and a camera, so that the multimedia area unit has the display and shooting capabilities, and the vehicle-mounted multimedia sound positioning system also has the capabilities of playing videos and acquiring images at multiple points.
The technical scheme of the application has the advantages that the regional network modules in the multimedia regional units and the central network modules of the central computing control unit have the capability of connecting networks, and the network modules in the multimedia regional units and the central network modules of the central computing control unit are connected through network cables to form reliable wired network connection in the vehicle.
The application has the beneficial effects that the time synchronization module and the network time synchronization module synchronize the time information of the central computation control unit and the multimedia area unit, and the time synchronization between the time synchronization module and the network time synchronization module ensures that the vehicle-mounted multimedia sound positioning system has the time synchronization information when the sound is positioned, so that the subsequent voice signal processing can be more conveniently carried out.
The technical scheme has the beneficial effects that the central clock synchronization module and the clock synchronization module synchronize clock information, the clock information is used for calculating sound delay, and the clock synchronization module is connected with the central clock synchronization module through a clock synchronization signal line. The clock information is connected through the clock synchronization signal line, so that the synchronization accuracy between the central computing control unit and the multimedia area units can be improved to the level of the maximum resolution of the clock signal, the synchronization accuracy of microphone sound information acquired by each multimedia area unit is further improved, and the sound source positioning accuracy of the vehicle-mounted multimedia sound positioning system can be further improved.
The sound signal processing module receives the sound information of the microphone of the multimedia area unit, the sound information is digital voice coding information, the digital voice coding information contains clock information, the clock information is provided for subsequent voice signal processing, and sound source positioning is conveniently and accurately carried out.
The application has the beneficial effects that the set multimedia area unit can be locked according to the input instruction, the sound signal sent by the space position corresponding to the set multimedia area unit is enhanced, the sound of other areas is weakened, and the central computing control unit drives the sound unit to enhance the sound signal corresponding to the space position corresponding to the set multimedia area unit. The signal processing mode can intelligently select and amplify the information of the sound source at the designated position according to the needs in the vehicle-mounted audio call or the video call, and can conveniently select the target sound source in the vehicle-mounted voice call of multiple people.
The technical scheme has the advantages that voice information sent out by each space position in the vehicle can be identified, the voice information is enhanced, and non-voice information is reduced; the central computing control unit sends the enhanced voice information through the central network module, receives the voice call information input from the outside through the central network module, and drives the sound unit to play the enhanced voice call information.
Drawings
FIG. 1 is a schematic diagram of a particular embodiment of an in-vehicle multimedia sound localization system;
FIG. 2 is one of the system frame diagrams of the in-vehicle multimedia sound localization system;
FIG. 3 is a second schematic diagram of a system frame of the in-vehicle multimedia sound localization system;
FIG. 4 is a third schematic diagram of a system frame of the in-vehicle multimedia sound localization system;
FIG. 5 is a fourth schematic diagram of a system frame of an in-vehicle multimedia sound localization system;
FIG. 6 is a fifth schematic diagram of a system framework of the in-vehicle multimedia sound localization system;
FIG. 7 is a sixth schematic diagram of a system framework of an in-vehicle multimedia sound localization system;
fig. 8 is a schematic diagram of a microphone array for sound localization in the prior art.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings. The following description of the preferred embodiments of the present application is not intended to limit the present application. The description of the preferred embodiments of the present application is merely illustrative of the general principles of the application. The first and second, and the numbers containing the english letters ABC in the present application are for distinguishing the expressions and do not represent a time or space sequence relationship.
In an embodiment of an in-vehicle multimedia sound localization system as shown in fig. 2 to 4, it includes a central computing control unit and 4 multimedia zone units; the multimedia area unit 1, the multimedia area unit 2, the multimedia area unit 3 and the multimedia area unit 4 are respectively. In practical applications, the number of multimedia area units may be more than 3.
In an embodiment of an on-vehicle multimedia sound localization system as shown in fig. 2 to 4, each multimedia zone unit includes a microphone, a display, and a camera; the multimedia area unit is electrically connected with the central computing control unit; the central computing control unit comprises a sound signal processing module and a sound positioning module; the sound positioning module is in electrical signal connection with the sound signal processing module; the sound signal processing module receives microphone sound information of more than three multimedia area units, the sound localization module calculates sound delay between a sound source and each microphone, calculates the distance between the sound source and each microphone according to the sound delay of the sound information of each microphone, and calculates the space position of the sound source according to the distance between each microphone; the sound signal emitted from the spatial position of the sound source is subjected to an enhancement or attenuation process according to the spatial position of the sound source. The central computing control unit comprises a video signal module and a camera signal processing module; the display of each multimedia area unit is electrically connected with the video signal module, and the video signal module controls the playing content of the display of each multimedia area unit; the display of each multimedia area unit is electrically connected with a camera signal processing module, and the camera signal processing module receives and processes the image data shot by each camera. The multimedia area unit comprises a display and a camera, so that the multimedia area unit has the display and camera shooting capabilities, and the vehicle-mounted multimedia sound positioning system also has the capabilities of playing videos and acquiring images in a multi-point mode.
In an embodiment of the vehicle-mounted multimedia sound positioning system shown in fig. 1, 4 multimedia zone units are also included, and the positions of the 4 multimedia zone units respectively correspond to the positions of the four seats. Reference numeral 0111 in fig. 1 is a display and/or camera in the 1 st multimedia area unit, and reference numeral 0112 in fig. 1 is a microphone in the 1 st multimedia area unit. Reference numeral 0122 in fig. 1 is a display and/or camera in the 2 nd multimedia zone unit, and reference numeral 0121 in fig. 1 is a microphone in the 2 nd multimedia zone unit. Reference numeral 0132 in fig. 1 is a display and/or camera in the 3 rd multimedia zone unit and reference numeral 0131 in fig. 1 is a microphone in the 3 rd multimedia zone unit. Reference numeral 0142 in fig. 1 is a display and/or camera in the 4 th multimedia zone unit and reference numeral 0121 in fig. 1 is a microphone in the 4 th multimedia zone unit.
In an embodiment of an on-vehicle multimedia sound localization system as shown in fig. 1, the 1 st multimedia zone unit, the 2 nd multimedia zone unit, the 3 rd multimedia zone unit and the 4 th multimedia zone unit form a multimedia zone unit array, and a plurality of microphones also form a microphone array.
The sound signal processing module in the central computing control unit receives microphone sound information of the four multimedia area units, the sound localization module computes sound delay between a sound source and the four microphones, and the distances between the four microphones can be known or set according to the sound delay of the sound information of the four microphones; according to the distances among the four microphones, the spatial position information of the sound source can be calculated; and performing enhancement or attenuation processing on the sound signal emitted from the spatial position of the sound source according to the spatial position information of the sound source. The spatial location information of the sound source may be a location of the relative multimedia area unit. When the sound source position is positioned clearly, the sound collection and playing of the multimedia area unit can be conveniently controlled. Such as amplifying or attenuating the target sound signal in a manner weighted by the sound signals acquired by the microphones.
In the embodiment of a vehicle-mounted multimedia sound positioning system shown in fig. 2 to 4, the same sound signal processing module in the central computing control unit is utilized to receive microphone sound information of a plurality of multimedia area units, that is, the same sound signal collecting and processing system is adopted for all sound signals from different positions, so that the noise floor of the sound signal collecting and processing system is kept consistent for all input sound signals, thereby facilitating subsequent sound signal processing. The problem that different system noise floors exist due to the fact that independent sound signal acquisition and processing systems are adopted at different positions is avoided; these noise floors may affect subsequent processing of the voice signal, especially when the distance between different positions of the acquired voice signal is small and the features of the voice signal at different positions are to be distinguished, these noise floors may affect the accuracy of the subsequent processing of the signal, so that the features of the different voice signals cannot be accurately identified, and thus, accurate sound source localization cannot be performed. By using the technical scheme of the application, the sound source localization can be accurately performed due to the consistent noise floor of each sound signal.
In some embodiments of the in-vehicle multimedia sound localization system, not shown in the drawings, the microphone is connected to the sound signal processing module through an audio signal line. The microphone is connected with the sound signal processing module through an audio signal wire, so that the sound signal entering the sound signal processing module is ensured to be an original sound signal to the greatest extent, and noise floor introduced in the signal transmission process is further reduced.
In an embodiment of the vehicle-mounted multimedia sound positioning system as shown in fig. 3, the vehicle-mounted multimedia sound positioning system further includes two sound units, namely a sound unit a and a sound unit B, and the central computing control unit and the sound unit are electrically connected; the central computing control unit controls the sound units to play audio data, controls the size, time delay and play content of the sound played by each sound unit according to the spatial position of the sound source, and controls the size and stereo effect of the played sound at the spatial position of the sound source.
In an embodiment of the vehicle-mounted multimedia sound localization system shown in fig. 1, the system comprises two sound units a, which are respectively 0151 and 0153; comprising two sound units B, numbered 0152 and 0154, respectively. Of course, there may be more sound units a and sound units B in number and positions.
The central computing control unit controls the size, time delay and playing content of the playing sound of each sound unit according to the spatial position of the sound source, and controls the size and stereo effect of the playing sound at the spatial position of the sound source. These played sounds are also part of the sound source signal and may also become part of the noise floor, and when the output sound can be controlled, the representative system has the capability of controlling the spatial position noise floor of the sound source, thereby also reducing the noise floor of the system and reducing the difficulty of subsequent signal processing.
In an embodiment of a vehicle-mounted multimedia sound positioning system as shown in fig. 4 to 5, the multimedia area units include an area network module, the central computing control unit includes a central network module, and the area network modules in the multimedia area units are connected with the central computing control unit through network cables. The regional network modules in the multimedia regional units and the central network modules of the central computing control unit enable each multimedia regional unit and the central computing control unit to have the capability of connecting networks, and the regional network modules in the multimedia regional units and the central network modules of the central computing control unit are connected through network cables to form reliable wired network connection in the vehicle.
In an embodiment of the vehicle-mounted multimedia sound positioning system as shown in fig. 5, the central computing control unit includes a network time synchronization module, and the multimedia area unit includes a time synchronization module, and the time synchronization module and the network time synchronization module synchronize time information of the central computing control unit and the multimedia area unit. The time synchronization module and the network time synchronization module synchronize the time information of the central computation control unit and the multimedia area unit, and the time synchronization between the time synchronization module and the network time synchronization module enables the vehicle-mounted multimedia sound positioning system to have the time synchronization information when the sound is positioned, so that the subsequent voice signal processing can be more conveniently carried out.
In an embodiment of an on-vehicle multimedia sound positioning system as shown in fig. 5, the microphone sound information of the multimedia area unit received by the sound signal processing module is digital voice coding information, where the digital voice coding information includes clock information. The microphone sound information of the multimedia area unit received by the sound signal processing module is digital voice coding information, and clock information is contained in the digital voice coding information to provide clock information for subsequent voice signal processing, so that sound source positioning is conveniently and accurately carried out.
In an embodiment of a vehicle-mounted multimedia sound positioning system as shown in fig. 6, a central computing control unit includes a central clock synchronization module, the multimedia area unit includes a clock synchronization module, the central clock synchronization module and the clock synchronization module synchronize clock information, the clock information is used for computing sound delay, and the clock synchronization module and the central clock synchronization module are connected through a clock synchronization signal line. The central clock synchronization module and the clock synchronization module synchronize clock information, the clock information is used for calculating sound delay, and the clock synchronization module is connected with the central clock synchronization module through a clock synchronization signal line. The clock information is connected through the clock synchronization signal line, so that the synchronization accuracy between the central computing control unit and the multimedia area units can be improved to the level of the maximum resolution of the clock signal, the synchronization accuracy of microphone sound information acquired by each multimedia area unit is further improved, and the sound source positioning accuracy of the vehicle-mounted multimedia sound positioning system can be further improved.
In an embodiment of an in-vehicle multimedia sound localization system as shown in fig. 7, the multimedia zone unit comprises an audio unit C. The multimedia area unit comprises a sound unit C, so that the multimedia area unit has sound playing capability, the output capability of sound signals is further enriched, and the vehicle-mounted multimedia sound positioning system also has the capability of playing sound at multiple points.
In some embodiments of the vehicle-mounted multimedia sound positioning system, which are not shown in the drawings, the central computing control unit includes a working mode 1, the working mode 1 locks the set multimedia area unit according to the input instruction, performs enhancement processing on the sound signal sent by the spatial position corresponding to the set multimedia area unit, performs attenuation processing on the sound of other areas, and drives the sound unit to enhance the sound signal corresponding to the spatial position corresponding to the set multimedia area unit. The central computing control unit drives the sound unit to strengthen the sound signal corresponding to the space position corresponding to the set multimedia area unit. The signal processing mode can intelligently select and amplify the information of the sound source at the designated position according to the needs in the vehicle-mounted audio call or the video call, and can conveniently select the target sound source in the vehicle-mounted voice call of multiple people.
In some embodiments of the vehicle-mounted multimedia sound positioning system not shown in the drawings, the central computing control unit comprises a working mode 2, and the central computing control unit recognizes voice information sent by each spatial position in the vehicle, enhances the voice information and reduces non-voice information; the central computing control unit sends the enhanced voice information through the central network module, receives the voice call information input from the outside through the central network module, and drives the sound unit to play the enhanced voice call information. The voice information sent by each space position in the vehicle can be identified, the voice information is enhanced, and the non-voice information is reduced; the central computing control unit sends the enhanced voice information through the central network module, receives the voice call information input from the outside through the central network module, and drives the sound unit to play the enhanced voice call information.
The vehicle-mounted multimedia sound positioning system comprises a central computing control unit and at least 3 multimedia area units; the multimedia zone unit comprises at least one microphone; the multimedia area unit is electrically connected with the central computing control unit; the central computing control unit comprises a sound signal processing module and a sound positioning module; the sound positioning module is in electrical signal connection with the sound signal processing module; the sound signal processing module receives microphone sound information of more than three multimedia area units, the sound localization module calculates sound delay between a sound source and each microphone, calculates the distance between the sound source and each microphone according to the sound delay, and calculates the space position of the sound source according to the distance between each microphone; the sound signal emitted from the spatial position of the sound source is subjected to an enhancement or attenuation process according to the spatial position of the sound source.
While the invention has been illustrated and described in terms of a preferred embodiment and several alternatives, the invention is not limited by the specific description in this specification. Other alternative or equivalent components may also be used in the practice of the present invention.
Claims (6)
1. A vehicle-mounted multimedia sound localization system, comprising: at least 3 multimedia area units, a central computing control unit;
the multimedia area unit comprises at least one microphone, an area network module, a clock synchronization module and a time synchronization module; the multimedia area unit is electrically connected with the central computing control unit;
The central computing control unit comprises a sound signal processing module, a sound positioning module, a central network module, a central clock synchronization module and a network time synchronization module; the sound positioning module is in electrical signal connection with the sound signal processing module;
The sound signal processing module receives microphone sound information of more than three multimedia area units, the sound localization module calculates sound delay between a sound source and each microphone, calculates the distance between the sound source and each microphone according to the sound delay of the sound information of each microphone, and calculates the space position of the sound source according to the distance between each microphone;
the sound signal emitted from the spatial position of the sound source is subjected to an enhancement or a subtraction process according to the spatial position of the sound source, wherein,
The regional network modules in the multimedia regional units are connected with the central computing control unit through network cables; the central clock synchronization module and the clock synchronization module synchronize clock information, the clock information is used for calculating sound delay, and the clock synchronization module and the central clock synchronization module are connected through a clock synchronization signal line; the time synchronization module and the network time synchronization module synchronize the time information of the central computing control unit and the multimedia area unit;
the central computing control unit comprises a working mode 1, wherein the working mode 1 locks the set multimedia area unit according to an input instruction, performs enhancement processing on sound signals sent out by the corresponding spatial position of the set multimedia area unit, performs weakening processing on sound of other areas, and drives the sound unit to enhance the sound signals corresponding to the corresponding spatial position of the set multimedia area unit;
the central computing control unit also comprises a working mode 2, and the central computing control unit recognizes voice information sent by each space position in the vehicle, so that the voice information is enhanced, and non-voice information is reduced; the central computing control unit sends the enhanced voice information through the central network module, receives the voice call information input from the outside through the central network module, and drives the sound unit to play the enhanced voice call information.
2. The vehicle-mounted multimedia sound localization system of claim 1, wherein the microphone is coupled to the sound signal processing module via an audio signal line.
3. The vehicle-mounted multimedia sound positioning system according to claim 1, further comprising an acoustic unit, a central computing control unit and an acoustic unit in electrical signal connection; the central computing control unit controls the sound units to play audio data, controls the size, time delay and play content of the sound played by each sound unit according to the spatial position of the sound source, and controls the size and stereo effect of the played sound at the spatial position of the sound source.
4. The in-vehicle multimedia sound localization system of claim 3, wherein the multimedia zone unit comprises an audio unit C.
5. The vehicle-mounted multimedia sound localization system of claim 1, wherein the multimedia zone unit comprises a display, a camera; the central computing control unit comprises a video signal module and a camera signal processing module; the display of each multimedia area unit is electrically connected with the video signal module, and the video signal module controls the playing content of the display of each multimedia area unit; the display of each multimedia area unit is electrically connected with a camera signal processing module, and the camera signal processing module receives and processes the image data shot by each camera.
6. The system of claim 1, wherein the microphone sound information of the multimedia zone unit received by the sound signal processing module is digital speech coding information, and the digital speech coding information includes clock information.
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| CN109545219A (en) * | 2019-01-09 | 2019-03-29 | 北京新能源汽车股份有限公司 | Vehicle-mounted voice interaction method, system, equipment and computer readable storage medium |
| CN109788382A (en) * | 2019-01-25 | 2019-05-21 | 深圳大学 | A kind of distribution microphone array pickup system and method |
| CN112216295A (en) * | 2019-06-25 | 2021-01-12 | 大众问问(北京)信息科技有限公司 | Sound source positioning method, device and equipment |
| CN111768444A (en) * | 2020-04-30 | 2020-10-13 | 苏州思必驰信息科技有限公司 | Sound source based information processing method and device and computer readable medium |
| CN113064118A (en) * | 2021-03-19 | 2021-07-02 | 维沃移动通信有限公司 | Sound source positioning method and device |
| CN113514801A (en) * | 2021-04-28 | 2021-10-19 | 成都启英泰伦科技有限公司 | Microphone array sound source positioning method and sound source identification method based on deep learning |
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