Cabin sound zoning control method and system, electronic device, and storage medium

Abstract

The present application provides a cabin sound zoning control method and system, an electronic device, and a storage medium. A current sound signal of a preset area is acquired, an initial reverse sound wave for the preset area is generated on the basis of the current sound signal, and the initial reverse sound wave is emitted towards the preset area. Subsequently, residual noise of the preset area is acquired, the initial reverse sound wave is adjusted on the basis of the residual noise to obtain a target reverse sound wave for the preset area, and the target reverse sound wave is emitted towards the preset area. When a passenger is in a cabin, the preset area comprises a passenger area and a driver area, and the passenger area and the driver area respectively have corresponding target reverse sound waves. When no passenger is in the cabin, the preset area is the driver area. Thereby, different noise reduction processing for different areas is enabled, improving a noise reduction effect and user experience.

Description

Cabin sound partition control method and system, electronic device and storage medium

[0001] The present application claims priority to the Chinese patent application No. 202410720916.8, filed on June 5, 2024, and entitled "Cabin sound partition control method and system, electronic device and storage medium", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of vehicles, in particular to a cabin sound partition control method and system, electronic device and storage medium. BACKGROUND

[0003] With the rapid development of automobile technology, the comfort and user experience in the car are increasingly valued. During driving and riding in a car, noise is a common problem, including noise from the engine, wheels and the ground, as well as sounds from the in-car entertainment system, navigation prompts, etc.

[0004] Noise can interfere with the driver's concentration and the passenger's riding experience. SUMMARY

[0005] The present application provides a cabin sound partition control method and system, electronic device and storage medium to reduce noise in partitions and improve user experience.

[0006] In a first aspect, the present application provides a cabin sound partition control method, comprising:

[0007] Obtaining a current sound signal of a preset area, generating an initial reverse sound wave of the preset area according to the current sound signal, and emitting the initial reverse sound wave to the preset area;

[0008] Obtaining a residual noise of the preset area, adjusting the initial reverse sound wave based on the residual noise, and obtaining a target reverse sound wave of the preset area;

[0009] Emitting the target reverse sound wave to the preset area;

[0010] When there is a passenger in the cabin, the preset area is a passenger area and a driver area, and the passenger area and the driver area have corresponding target reverse sound waves respectively; when there is no passenger in the cabin, the preset area is a driver area.

[0011] Optionally, the generating an initial reverse sound wave of the preset area according to the current sound signal, and emitting the initial reverse sound wave to the preset area, specifically comprises:

[0012] The adaptive filter generates an initial reverse sound wave of the preset area according to the current sound signal, and the initial reverse sound wave is emitted by a loudspeaker corresponding to the preset area.

[0013] The residual noise of the preset area is obtained, the initial reverse sound wave is adjusted based on the residual noise, and a target reverse sound wave of the preset area is obtained, and specifically includes:

[0014] The microphone corresponding to the preset area is controlled to obtain the residual noise of the preset area, and the residual noise is input into the filter, so that the adaptive filter adjusts the weight coefficient of the adaptive filter based on the residual noise, until the mean square value of the residual noise is minimized, and the corresponding target reverse sound wave is output.

[0015] Optionally, the current sound signal of the preset area is obtained, and the initial reverse sound wave of the preset area is generated according to the current sound signal, and specifically includes:

[0016] Detecting whether there is a passenger in the cabin;

[0017] If yes, the current sound signal of the passenger area and the current sound signal of the driver area are obtained, the first initial reverse sound wave of the passenger area is generated according to the current sound signal of the passenger area, and the second initial reverse sound wave of the driver area is generated according to the current sound signal of the driver area;

[0018] The loudspeaker corresponding to the passenger area is controlled to emit the first initial reverse sound wave, and the loudspeaker corresponding to the driver area is controlled to emit the second initial reverse sound wave;

[0019] If no, the current sound signal of the driver area is obtained, and the third initial reverse sound wave is generated according to the current sound signal of the driver area.

[0020] Optionally, the first initial reverse sound wave of the passenger area is generated according to the current sound signal of the passenger area, and specifically includes:

[0021] Judging whether the passenger is tired or falls asleep;

[0022] If yes, the navigation sound, the entertainment sound and the road noise sound of the passenger area are obtained, and the first initial reverse sound wave is generated according to the navigation sound, the entertainment sound and the road noise sound of the passenger area;

[0023] If no, the navigation sound and the road noise sound of the passenger area are obtained, and the first initial reverse sound wave is generated according to the navigation sound and the road noise sound of the passenger area;

[0024] The second initial reverse sound wave is generated according to the current sound signal of the driver area, and specifically includes:

[0025] determining whether the passenger plays an entertainment sound;

[0026] if yes, acquiring an entertainment sound and a road noise sound of the driver area in response to a first operation of the driver, generating a second initial counter sound wave according to the entertainment sound and the road noise sound of the driver area, or acquiring a road noise sound of the driver area in response to a second operation of the driver, and generating a second initial counter sound wave according to the road noise sound of the driver area;

[0027] if no, acquiring a road noise sound of the driver area, and generating a second initial counter sound wave according to the road noise sound of the driver area.

[0028] Optionally, before the acquiring of the current sound signal of the preset area, the method further comprises:

[0029] detecting whether the driver is in a fatigue state;

[0030] if no, acquiring a current sound signal of a preset area; and if yes, generating a fatigue reminder.

[0031] Optionally, before the emitting of the target counter sound wave to the preset area, the method further comprises:

[0032] acquiring a compensation signal corresponding to the preset area;

[0033] the emitting of the target counter sound wave to the preset area specifically comprises:

[0034] compensating the target counter sound wave by using the compensation signal to obtain a compensated counter sound wave;

[0035] emitting the compensated counter sound wave to the preset area.

[0036] Optionally, the acquiring method of the compensation signal comprises:

[0037] in response to a first operation of a user, performing secondary channel compensation calibration to acquire the compensation signal corresponding to the preset area;

[0038] or, in response to a second operation of the user, acquiring the compensation signal corresponding to the preset area in the last calibration.

[0039] Optionally, the performing of the secondary channel compensation calibration specifically comprises:

[0040] controlling a loudspeaker corresponding to the preset area to emit a test signal of a preset volume;

[0041] controlling a microphone corresponding to the preset area to acquire the test signal;

[0042] According to the test signal emitted by the loudspeaker corresponding to the preset area and the test signal acquired by the microphone corresponding to the preset area, a secondary path transfer function is calculated to obtain amplitude attenuation and phase shift information between the loudspeaker corresponding to the preset area and the microphone corresponding to the preset area.

[0043] According to the amplitude attenuation and phase shift information, a compensation signal corresponding to the preset area is determined.

[0044] In a second aspect, the application provides a cockpit sound partition control system, the system comprising:

[0045] A signal acquisition module is configured to acquire a current sound signal of a preset area.

[0046] A signal processing module is configured to generate an initial reverse sound wave of the preset area according to the current sound signal and emit the initial reverse sound wave to the preset area.

[0047] A feedback adjustment module is configured to acquire residual noise of the preset area, adjust the initial reverse sound wave based on the residual noise, and obtain a target reverse sound wave of the preset area.

[0048] A signal output module is configured to emit the target reverse sound wave to the preset area.

[0049] When there is a passenger in the cockpit, the preset area is a passenger area and a driver area, and the passenger area and the driver area have corresponding target reverse sound waves, respectively; when there is no passenger in the cockpit, the preset area is a driver area.

[0050] Optionally, the signal acquisition module comprises one or more of an acquisition sub-module, an acceleration sensor, a pressure sensor, a passenger monitoring system module, and a driver fatigue detection system module.

[0051] The acquisition sub-module is configured to acquire navigation sound and entertainment sound of a preset area.

[0052] The acceleration sensor is configured to acquire road noise of a preset area.

[0053] The pressure sensor is configured to detect whether there is a passenger on a seat.

[0054] The passenger monitoring system module is configured to detect whether a passenger is tired or asleep.

[0055] The driver fatigue detection system module is configured to detect whether a driver is in a tired state.

[0056] Optionally, the signal processing module comprises a processing sub-module, a loudspeaker of the preset area, and a microphone of the preset area.

[0057] The processing submodule is configured to generate an initial reverse sound wave of the preset area according to the current sound signal of the preset area;

[0058] The loudspeaker of the preset area is configured to emit the initial reverse sound wave and the target reverse sound wave.

[0059] The microphone of the preset area is configured to acquire residual noise of the preset area.

[0060] In a third aspect, the present application provides an electronic device, comprising a memory and a processor.

[0061] The memory is configured to store instructions, and the processor is configured to invoke the instructions in the memory to execute the method in the first aspect and any possible design of the first aspect.

[0062] In a fourth aspect, the present application provides a computer-readable storage medium, which stores computer instructions, and when at least one processor of an electronic device executes the computer instructions, the electronic device executes the method in the first aspect and any possible design of the first aspect.

[0063] In a fifth aspect, the present application provides a computer program product, which comprises computer instructions, and when at least one processor of an electronic device executes the computer instructions, the electronic device executes the method in the first aspect and any possible design of the first aspect.

[0064] The cockpit sound partition control method, system, electronic device and storage medium provided by the present application can obtain a current sound signal of a preset area, generate an initial reverse sound wave of the preset area according to the current sound signal, and emit the initial reverse sound wave to the preset area. Then, residual noise of the preset area is acquired, the initial reverse sound wave is adjusted based on the residual noise, a target reverse sound wave of the preset area is obtained, and the target reverse sound wave is emitted to the preset area. When there is a passenger in the cockpit, the preset area is a passenger area and a driver area, and the passenger area and the driver area have corresponding target reverse sound waves respectively. When there is no passenger in the cockpit, the preset area is the driver area. Therefore, different noise reduction processing can be performed on different areas, and the noise reduction effect and user experience are improved. BRIEF DESCRIPTION OF DRAWINGS

[0065] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0066] FIG. 1 is a flowchart of a cockpit sound zoning control method according to an embodiment of the present application;

[0067] FIG. 2 is a flowchart of a cockpit sound zoning control method according to another embodiment of the present application;

[0068] FIG. 3 is a flowchart of a cockpit sound zoning control method according to yet another embodiment of the present application;

[0069] FIG. 4 is a flowchart of a cockpit sound zoning control method according to still another embodiment of the present application;

[0070] FIG. 5 is a structural schematic diagram of a cockpit sound zoning control system according to an embodiment of the present application;

[0071] FIG. 6 is a hardware structural schematic diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0072] To make the objectives, technical solutions, and advantages of the present application clearer, the technical solutions of the present application will be described below in conjunction with the accompanying drawings in the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0073] With the rapid development of automobile technology, the comfort and user experience in the car are increasingly valued. During driving and riding in a car, noise is a common problem, including noise from the engine, wheels, and ground, as well as sounds from the in-car entertainment system, navigation prompts, etc. Noise can interfere with the driver's concentration and the passenger's riding experience.

[0074] In some embodiments, sound zoning control can be achieved through directional speaker technology to provide different sound environments for different areas in the car. Directional speaker technology designs the structure of the speaker physically so that sound can be propagated in a narrow beam, thereby limiting the sound output to a specific area and reducing the mutual interference between the driver and the passengers.

[0075] However, directional speaker technology has some problems:

[0076] (1) Cost problem: the design and manufacturing cost of directional speakers is high;

[0077] (2) Installation complexity: the installation of directional speakers requires precise positioning and angle modulation, increasing the difficulty and time cost of installation;

[0078] (3) Control effect on external noise is limited: directional speakers mainly aim at the directional propagation of in-vehicle sound, and the control effect on external environmental noise such as road noise is limited;

[0079] (4) System compatibility and expansibility: directional speakers may be difficult to integrate with other systems in the vehicle, such as entertainment systems, navigation systems, etc., limiting the functional expansion of the cabin sound management system.

[0080] Therefore, how to effectively control noise and improve in-vehicle comfort and user experience is a more important problem.

[0081] To solve the above problems, the present application provides a cabin sound partition control method. When there are passengers in the cabin, initial reverse sound waves of the passenger area are generated according to the current sound signals of the passenger area, and the initial reverse sound waves are emitted to the passenger area. At the same time, initial reverse sound waves of the driver area are generated according to the current sound signals of the driver area. When there are no passengers in the cabin, initial reverse sound waves of the driver area are generated according to the current sound signals of the driver area. Then, the initial reverse sound waves can be adjusted to generate target reverse sound waves of each area, and the corresponding target reverse sound waves are emitted to each area, so that different noise reduction processing can be performed for different areas to improve the noise reduction effect and user experience.

[0082] And the cabin sound control method of the present application does not need to install directional speakers, reduces the cost and installation complexity, improves the system compatibility and expansibility, and can perform corresponding processing based on different noise to improve the control effect.

[0083] The technical solutions of the present application will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0084] FIG. 1 shows a flowchart of a cabin sound partition control method according to an embodiment of the present application. As shown in FIG. 1, taking an electronic device as the execution subject, the method of the present embodiment can include the following steps:

[0085] S101, obtaining the current sound signal of the preset area, generating the initial reverse sound wave of the preset area according to the current sound signal, and emitting the initial reverse sound wave to the preset area.

[0086] When there are passengers in the cabin, the preset area is the passenger area and the driver area, and when there are no passengers in the cabin, the preset area is the driver area. For example, when there are passengers in the cabin, the current sound signal of the passenger area and the current sound signal of the driver area are obtained. When there are no passengers in the cabin, the current sound signal of the driver area can be obtained.

[0087] It should be noted that there are multiple passengers in the cabin, and the current sound signals of different passenger areas can be obtained, for example, when there is a passenger in the co-driver area, the current sound signal of the co-driver area can be obtained; when there is a passenger in the left rear area, the current sound signal of the left rear area can be obtained; when there is a passenger in the middle rear area, the current sound signal of the middle rear area can be obtained; and when there is a passenger in the right rear area, the current sound signal of the right rear area can be obtained.

[0088] In practical applications, the current sound signal can include road noise, entertainment sound, navigation sound, etc., and the entertainment sound can include video sound, audio sound, etc.

[0089] The road noise can be obtained by an acceleration sensor installed on the chassis of the vehicle. In order to obtain road noise in different areas, multiple acceleration sensors can be provided, for example, acceleration sensors can be provided at both ends of the front axle and both ends of the rear axle, so as to obtain road noise in the driver area, road noise in the co-driver area, road noise in the left rear area, and road noise in the right rear area. For road noise in the middle rear area, the road noise in the left rear area and the road noise in the right rear area can be obtained, for example, the average of the road noise in the left rear area and the road noise in the right rear area is taken as the road noise in the middle rear area.

[0090] The entertainment sound and the navigation sound can be obtained by the vehicle entertainment system. When the cabin includes multiple speakers and each area has a unique corresponding speaker, the vehicle entertainment system can provide the same entertainment sound and navigation sound for each area, or different entertainment sound and navigation sound for each area. When multiple areas in the cabin correspond to one speaker, the entertainment sound and the navigation sound of the corresponding area can be determined according to the position of the speaker, for example, the entertainment sound and the navigation sound of each area can be determined according to the distance between the speaker and the center of each area. The closer the area is to the speaker, the louder the entertainment sound and the navigation sound, and the farther the area is from the speaker, the quieter the entertainment sound and the navigation sound.

[0091] In this step, after obtaining the current sound signal of the preset area, the initial reverse sound wave of the preset area is generated according to the current sound signal.

[0092] Specifically, the initial reverse sound wave of the passenger area can be generated according to the current sound signal of the passenger area, and the initial reverse sound wave of the driver area can be generated according to the current sound signal of the driver area.

[0093] For example, when the current sound signal of the passenger area includes navigation sound, entertainment sound and road noise sound, the initial reverse sound wave of the passenger area can be generated according to the navigation sound, the entertainment sound and the road noise sound of the passenger area; when the current sound signal of the passenger area includes navigation sound and road noise sound, the initial reverse sound wave of the passenger area can be generated according to the navigation sound and the road noise sound of the passenger area; when the current sound signal of the passenger area includes entertainment sound and road noise sound, the initial reverse sound wave of the passenger area can be generated according to the entertainment sound and the road noise sound of the passenger area; when the current sound signal of the passenger area includes road noise sound, the initial reverse sound wave of the passenger area can be generated according to the road noise sound of the passenger area.

[0094] When the current sound signal of the driver area includes navigation sound, entertainment sound and road noise sound, the initial reverse sound wave of the driver area can be generated according to the entertainment sound and the road noise sound of the driver area; when the current sound signal of the driver area includes navigation sound and road noise sound, the initial reverse sound wave of the driver area can be generated according to the road noise sound of the driver area; when the current sound signal of the driver area includes entertainment sound and road noise sound, the initial reverse sound wave of the driver area can be generated according to the entertainment sound and the road noise sound of the driver area; when the current sound signal of the driver area includes road noise sound, the initial reverse sound wave of the driver area can be generated according to the road noise sound of the driver area.

[0095] In some embodiments, if there is a need for active noise reduction, an initial reverse sound wave opposite in phase to the current sound signal can be calculated by an adaptive filter. The adaptive filter can be, for example, a least mean square (LMS) adaptive filter, which can adopt a filtered-x least mean square (FxLMS) algorithm.

[0096] For example, when the current sound signal includes entertainment sound, the spectral characteristics of the entertainment sound can be obtained as a reference signal of the filtered-x least mean square algorithm. For another example, when the current sound signal includes road noise sound, the road noise characteristics of the road noise sound can be obtained as a reference signal of the adaptive filtered-x least mean square algorithm. Then, the least mean square adaptive filter generates a reverse sound wave opposite in phase to the reference signal, so that the amplitude of the synthesized sound wave is reduced, achieving the purpose of noise reduction.

[0097] It should be noted that different preset areas can have corresponding current sound signals, and correspondingly, different preset areas can have corresponding initial reverse sound waves, so as to achieve different noise reduction effects in different areas.

[0098] In this step, after the initial reverse sound wave of the preset area is generated, the initial reverse sound wave is emitted to the preset area, so as to reduce the noise of the preset area.

[0099] For example, the initial preset reverse sound wave can be emitted by the loudspeaker corresponding to the preset area to emit the initial reverse sound wave to the preset area.

[0100] It can be understood that each area can have a corresponding loudspeaker for playing entertainment sound and navigation sound, and can also have a corresponding loudspeaker for emitting the initial reverse sound wave.

[0101] S102, obtain the residual noise of the preset area, adjust the initial reverse sound wave based on the residual noise, and obtain the target reverse sound wave of the preset area.

[0102] The residual noise refers to the noise of the preset area after being controlled by the reverse sound wave, and can also be understood as the difference between the current sound signal and the reverse sound wave.

[0103] It should be noted that when the preset area includes the passenger area and the driver area, the passenger area has a corresponding target reverse sound wave, and the driver area also has a corresponding target reverse sound wave; when the preset area includes the driver area, the driver area has a corresponding target reverse sound wave.

[0104] In some embodiments, the residual noise of the preset area can be obtained by a microphone of the preset area. For example, when the preset area includes the driver area, the residual noise of the driver area can be obtained by a microphone of the driver area; when the preset area includes the passenger area, the residual noise of the passenger area can be obtained by a microphone of the passenger area.

[0105] For example, the microphone of the driver area can be located at the headrest of the main driver seat; when the passenger area includes the co-driver area, the microphone of the co-driver area can be located at the headrest of the co-driver seat; when the passenger area includes the rear left area, the microphone of the rear left area can be located at the headrest of the rear left seat; when the passenger area includes the rear middle area, the microphone of the rear middle area can be located at the headrest of the rear middle seat; when the passenger area includes the rear right area, the microphone of the rear right area can be located at the headrest of the rear middle seat.

[0106] In this step, after obtaining the residual noise of the preset area, the initial reverse sound wave is adjusted based on the residual noise to obtain the target reverse sound wave of the preset area.

[0107] For example, when the preset area includes the passenger area, the initial reverse sound wave of the passenger area is adjusted based on the residual noise of the passenger area to obtain the target reverse sound wave of the passenger area; when the preset area includes the driver area, the initial reverse sound wave of the driver area is adjusted based on the residual noise of the driver area to obtain the target reverse sound wave of the driver area.

[0108] In some examples, residual noise from a preset region can be input into an adaptive filter. The adaptive filter adjusts its weighting coefficients based on the residual noise until the mean square value of the residual noise is minimized. At this point, the corresponding target reverse acoustic wave is output. The adaptive filter can be adjusted based on the residual noise. The adaptive filter can use an adaptive algorithm to adjust its parameters, ultimately minimizing the mean square value of the error signal (i.e., residual noise). At this point, the corresponding target reverse acoustic wave can effectively cancel the original noise signal (the current sound signal).

[0109] In other examples, the initial reverse acoustic wave can be adjusted based on the amplitude of the residual noise. For example, the amplitude of the initial reverse acoustic wave can be reduced by an amount equal to the amplitude of the residual noise. Then, the adjusted initial reverse acoustic wave is emitted to the initial region to continue acquiring the residual noise of the preset region and adjusting the amplitude of the initial reverse acoustic wave until the residual noise approaches zero, thus obtaining the target reverse acoustic wave.

[0110] S103. Send a target-reverse sound wave to the preset area.

[0111] It is understandable that sending a target-reverse sound wave to a preset area can better cancel out the current sound signal in the preset area.

[0112] For example, a target-reverse sound wave can be emitted from a speaker corresponding to a preset area to project a target-reverse sound wave into the preset area. For instance, a target-reverse sound wave corresponding to the driver's area can be emitted from a speaker corresponding to the driver's area; a target-reverse sound wave corresponding to the passenger area can be emitted from a speaker corresponding to the passenger area.

[0113] The cockpit sound zoning control method provided in this application acquires the current sound signal of a preset area, generates an initial reverse sound wave for the preset area based on the current sound signal, and emits the initial reverse sound wave to the preset area. Then, it acquires the residual noise of the preset area, adjusts the initial reverse sound wave based on the residual noise to obtain a target reverse sound wave for the preset area, and emits the target reverse sound wave to the preset area. When there are passengers in the cockpit, the preset areas are the passenger area and the driver area, each with its corresponding target reverse sound wave. When there are no passengers in the cockpit, the preset area is the driver area. This allows for different noise reduction processing for different areas, improving noise reduction effectiveness and user experience.

[0114] Figure 2 shows a flowchart of a cockpit sound zone control method provided in an embodiment of this application. As shown in Figure 2, the cockpit sound control method provided in this embodiment includes:

[0115] S201. Check if there are passengers in the cabin.

[0116] For example, whether there is a passenger on each seat can be detected by a pressure sensor under each seat to detect whether there is a passenger in the cabin.

[0117] If there is a passenger in the cabin, steps S202 and S203 are executed; if there is no passenger in the cabin, step S208 is executed.

[0118] In this embodiment, when there is a passenger in the cabin, corresponding sound control processing is performed for the passenger area and the driver area, and different sound control processing can be performed; when there is no passenger in the cabin, corresponding sound control processing is performed for the driver area, and no sound control processing is performed for other areas, thereby increasing the noise reduction efficiency.

[0119] S202, obtain the current sound signal of the passenger area, and generate the first initial reverse sound wave of the passenger area according to the current sound signal of the passenger area.

[0120] For example, when the number of passenger areas is multiple, for example, including the co-pilot area, the rear left area, the rear middle area, and the rear right area, the current sound signal of each passenger area can be obtained, and the first initial reverse sound wave of each passenger area can be generated according to the current sound signal of each passenger area.

[0121] In some embodiments, in order to improve the experience of the passenger, different first initial reverse sound waves can be generated based on different states of the passenger. Specifically, including:

[0122] a1, judge whether the passenger is tired or asleep.

[0123] For example, whether the passenger is tired or asleep can be detected by an occupant monitoring system (OMS).

[0124] Since the number of passengers can be multiple, some passengers can be in a tired or asleep state, and some passengers can be in a wakeful state. Therefore, different processing can be performed for passengers in different states to achieve noise reduction in different areas and improve the passenger experience.

[0125] If yes, step a2 is executed; if no, step a3 is executed.

[0126] a2, obtain the navigation sound, the entertainment sound, and the road noise sound of the passenger area, and generate the first initial reverse sound wave according to the navigation sound, the entertainment sound, and the road noise sound of the passenger area.

[0127] When the passenger is tired or asleep, the navigation sound, the entertainment sound, and the road noise sound of the passenger area of the passenger are obtained, and the first initial reverse sound wave of the passenger area is generated to reduce the interference of the road noise sound, the entertainment sound, and the navigation sound on the passenger.

[0128] For example, when a passenger in a certain seat is tired or falls asleep, the navigation sound, the entertainment sound and the road noise sound in the passenger area can be taken as the input of the adaptive filter to obtain the corresponding first initial reverse sound wave.

[0129] In actual application, since the navigation sound and the entertainment sound belong to the in-vehicle entertainment system, the in-vehicle entertainment system can interact with the cabin sound partition control system (i.e., the electronic device mentioned above) to enable the cabin sound partition control system to obtain the navigation sound and the entertainment sound.

[0130] a3, obtaining the navigation sound and the road noise sound in the passenger area, and generating the first initial reverse sound wave according to the navigation sound and the road noise sound in the passenger area.

[0131] When the passenger is not tired or falls asleep, the first initial reverse sound wave can be generated based on the navigation sound and the road noise sound in the passenger area, and at this time, the entertainment sound is not processed, so that the passenger can continue to experience the fun of the entertainment sound.

[0132] S203, obtaining the current sound signal in the driver area, and generating the second initial reverse sound wave in the driver area according to the current sound signal in the driver area.

[0133] In some embodiments, in order to improve the experience of the driver, the corresponding second initial reverse sound wave can be generated based on the needs of the driver. Specifically, it includes:

[0134] b1, judging whether the passenger plays the entertainment sound.

[0135] If yes, step b2 or step b3 is executed, and specifically, whether the entertainment sound needs to be lowered can be displayed on the central control interface (such as a car display screen), and if a first operation of the driver is received, step b2 is executed, and if a second operation of the driver is received, step b3 is executed. For example, the first operation is a click operation on the need button, and the second operation is a click operation on the no need button.

[0136] If no, step b4 is executed.

[0137] b2, obtaining the entertainment sound and the road noise sound in the driver area in response to the first operation of the driver, and generating the second initial reverse sound wave according to the entertainment sound and the road noise sound in the driver area.

[0138] b3, obtaining the road noise sound in the driver area in response to the second operation of the driver, and generating the second initial reverse sound wave according to the road noise sound in the driver area.

[0139] It should be noted that the second initial reverse sound wave generated in step b2 can be different from the second initial reverse sound wave generated in step b3.

[0140] b4, obtaining a road noise sound of the driver area, and generating a second initial anti-noise wave according to the road noise sound of the driver area.

[0141] The second initial anti-noise wave generated in step b4 can be the same as the second initial anti-noise wave generated in step b3.

[0142] It should be noted that when the passenger does not play the entertainment sound, the all-area routine noise reduction can also be performed to eliminate the road noise sound.

[0143] S204, obtaining residual noise of the passenger area and residual noise of the driver area.

[0144] For example, the microphone of the passenger area is controlled to obtain the residual noise of the passenger area, and the microphone of the driver area is controlled to obtain the residual noise of the driver area.

[0145] Then, step S205 and step S206 are performed.

[0146] S205, adjusting the first initial anti-noise wave based on the residual noise of the passenger area to obtain a first target anti-noise wave of the passenger area.

[0147] For example, the weight coefficient of the adaptive filter can be adjusted based on the residual noise of the passenger area by the adaptive filter, and the corresponding first target anti-noise wave is output until the mean square value of the residual noise of the passenger area is minimized.

[0148] Then, step S207 is performed.

[0149] S206, adjusting the second initial anti-noise wave based on the residual noise of the driver area to obtain a second target anti-noise wave of the driver area.

[0150] For example, the weight coefficient of the adaptive filter can be adjusted based on the residual noise of the driver area by the adaptive filter, and the corresponding second target anti-noise wave is output until the mean square value of the residual noise of the driver area is minimized.

[0151] Then, step S207 is performed.

[0152] S207, controlling the loudspeaker corresponding to the passenger area to emit the first target anti-noise wave, and controlling the loudspeaker corresponding to the driver area to emit the second target anti-noise wave.

[0153] The first target anti-noise wave is used to cancel the current sound signal of the passenger area, and the second target anti-noise wave is used to cancel the current sound signal of the driver area.

[0154] S208, obtaining a current sound signal of the driver area, and generating a third initial anti-noise wave according to the current sound signal of the driver area.

[0155] In some embodiments, in the driver-alone driving scenario, a reminder message about whether noise reduction processing is needed can be displayed on the central control interface, and after receiving a click operation of the driver on the need button, the current sound signal of the driver area is acquired.

[0156] For example, the current sound signal of the driver area can include road noise of the driver area, and the third initial reverse sound wave can be generated according to the road noise of the driver area. For example, the road noise of the driver area can be acquired through the acceleration sensor corresponding to the driver area.

[0157] Then, step S209 is performed.

[0158] S209, acquiring residual noise of the driver area.

[0159] For example, the residual noise of the driver area can be acquired through the microphone of the driver area. For example, the residual noise of the driver area can be acquired through the microphone at the headrest of the driver seat.

[0160] S210, adjusting the third initial reverse sound wave based on the residual noise of the driver area to obtain the third target reverse sound wave of the driver area.

[0161] For example, the weight coefficient of the adaptive filter can be adjusted based on the residual noise of the driver area through the adaptive filter, and the corresponding third target reverse sound wave is output until the mean square value of the residual noise of the driver area is minimized, so as to achieve good noise control effect near the driver and improve the driving experience.

[0162] S211, controlling the loudspeaker corresponding to the driver area to emit the third target reverse sound wave.

[0163] At this point, one cycle of cabin sound partition control is completed. Then, steps S201-S211 can be continuously performed to perform the next cycle of cabin sound partition control.

[0164] The cabin sound partition control method provided in the embodiment can generate an initial reverse sound wave of a passenger area according to a current sound signal of the passenger area when there is a passenger in the cabin, and emit the initial reverse sound wave to the passenger area. Meanwhile, an initial reverse sound wave of a driver area is generated according to a current sound signal of the driver area. When there is no passenger in the cabin, an initial reverse sound wave of the driver area is generated according to a current sound signal of the driver area. Then, the initial reverse sound wave can be adjusted to generate a target reverse sound wave of each area, and the corresponding target reverse sound wave is emitted to each area, so that different noise reduction processing can be performed for different areas to improve the noise reduction effect and user experience.

[0165] FIG. 3 shows a flowchart of a cockpit sound partition control method according to an embodiment of the present application. Based on the embodiment described in FIG. 1, the embodiment can further remind the driver when the driver is tired, and improve driving safety. As shown in FIG. 3, taking an electronic device as an execution subject, the method of the embodiment can include the following steps:

[0166] S301, detecting whether the driver is in a tired state.

[0167] For example, the driver fatigue detection system (DMS) can be used to detect whether the driver is in a tired state.

[0168] If yes, step S302 is performed; if no, step S303 is performed.

[0169] S302, generating a fatigue reminder.

[0170] For example, the driver can be actively reminded by playing music or voice.

[0171] Then, the driver can be continuously detected for the tired state. If the driver recovers, the reminder level can be appropriately reduced, for example, the music volume can be reduced. If the driver does not recover, a rest suggestion can be provided, and the rest suggestion can be sent to the vehicle entertainment system, and the nearest rest area can be provided by the map navigation function of the vehicle entertainment system.

[0172] S303, obtaining a current sound signal of a preset area, generating an initial reverse sound wave of the preset area according to the current sound signal, and emitting the initial reverse sound wave to the preset area.

[0173] S304, obtaining residual noise of the preset area, adjusting the initial reverse sound wave based on the residual noise, and obtaining a target reverse sound wave of the preset area.

[0174] S305, emitting the target reverse sound wave to the preset area.

[0175] The cockpit sound partition control method provided by the embodiment can further remind the driver when the driver is tired, and improve driving safety.

[0176] FIG. 4 shows a flowchart of a cockpit sound partition control method according to an embodiment of the present application. Based on the embodiment described in FIG. 1, the embodiment can further compensate the target reverse sound wave to compensate the amplitude attenuation and phase change of the reverse sound wave, and enhance the control effect. As shown in FIG. 4, taking an electronic device as an execution subject, the method of the embodiment can include the following steps:

[0177] S401, acquire a current sound signal of a preset area, generate an initial reverse sound wave of the preset area according to the current sound signal, and emit the initial reverse sound wave to the preset area.

[0178] S402, acquire residual noise of the preset area, adjust the initial reverse sound wave based on the residual noise, and obtain a target reverse sound wave of the preset area.

[0179] S403, acquire a compensation signal corresponding to the preset area.

[0180] The applicant considers that the emission of the target reverse sound wave has certain amplitude attenuation and phase change, for example, there is a certain distance between the loudspeaker corresponding to the preset area and the microphone corresponding to the preset area, so that the target reverse sound wave has certain amplitude attenuation and phase change.

[0181] Therefore, in the embodiment, the target reverse sound wave is compensated by the compensation signal to enhance the noise reduction effect.

[0182] In some examples, the secondary channel compensation calibration can be performed in response to a first operation of a user to acquire the compensation signal corresponding to the preset area. The user here can be a driver or a passenger.

[0183] In other examples, the compensation signal corresponding to the preset area calibrated last time can be acquired in response to a second operation of a user.

[0184] It should be noted that the cabin sound partition control method is cyclic, and the compensation signal corresponding to the preset partition calibrated last time can be the compensation signal corresponding to the preset partition calibrated in the last cycle. In actual application, one start to ignition off can be one cycle.

[0185] For example, a reminder message of whether to perform the secondary channel compensation calibration is displayed on the central control interface, if a click operation of a user on a need button is received, the secondary channel compensation calibration is performed, and if a click operation of a user on a do not need button is received, the compensation signal corresponding to the preset area calibrated last time is acquired.

[0186] In some embodiments, performing the secondary channel compensation calibration can include:

[0187] c1, controlling the loudspeaker corresponding to the preset area to emit a test signal of a preset volume.

[0188] The preset volume is usually a low volume, which can be determined according to actual conditions.

[0189] For example, when the preset area includes a passenger area, the loudspeaker corresponding to the passenger area can be controlled to emit a test signal of a preset volume; when the preset area includes a driver area, the loudspeaker corresponding to the driver area can be controlled to emit a test signal of a preset volume.

[0190] In an example, after starting the calibration mode, the loudspeaker corresponding to the preset area can be controlled to emit a test signal with a preset volume.

[0191] c2. The microphone corresponding to the preset area can be controlled to acquire the test signal.

[0192] For example, when the preset area includes a passenger area, the microphone corresponding to the passenger area can be controlled to acquire the test signal; when the preset area includes a driver area, the microphone corresponding to the driver area can be controlled to acquire the test signal.

[0193] c3. The secondary path transfer function can be calculated according to the test signal emitted by the loudspeaker corresponding to the preset area and the test signal acquired by the microphone corresponding to the preset area, so as to obtain the amplitude attenuation and phase shift information between the microphone corresponding to the preset area and the loudspeaker corresponding to the preset area.

[0194] c4. The compensation signal corresponding to the preset area can be determined according to the amplitude attenuation and phase shift information.

[0195] It can be understood that, through the secondary path compensation calibration, the signal emitted by the loudspeaker corresponding to the preset area can be closer to the original sound signal (current sound signal) of the preset area after reaching the preset area, so as to achieve better noise reduction effect.

[0196] Then, the compensation signal can be saved to the storage unit.

[0197] In actual application, after the secondary path compensation calibration, the user can be reminded of the calibration completion on the central control interface, and then the calibration mode can be exited.

[0198] S404. The target reverse sound wave is compensated by using the compensation signal to obtain a compensated reverse sound wave, and the compensated reverse sound wave is emitted to the preset area.

[0199] It can be understood that, after the target reverse sound wave is compensated by using the compensation signal, the loss in the emission process of the target reverse sound wave can be compensated, and the noise reduction effect can be enhanced.

[0200] The cabin sound partition control method provided in this embodiment compensates the target reverse sound wave, compensates the attenuation and phase change in the emission process of the target reverse sound wave, and enhances the noise reduction effect.

[0201] FIG. 5 shows a structural schematic diagram of a cabin sound partition control system according to an embodiment of the present application. As shown in FIG. 5, the cabin sound partition control system 10 of this embodiment is used to implement the operation of the electronic device corresponding to any of the method embodiments described above. The cabin sound partition control system 10 of this embodiment includes:

[0202] The signal acquisition module 11 is configured to acquire a current sound signal of a preset area. The signal acquisition module 11 is configured to acquire a current sound signal of a preset area.

[0203] a signal processing module 12, configured to generate an initial reverse sound wave of the preset area according to the current sound signal, and send the initial reverse sound wave to the preset area;

[0204] a feedback adjustment module 13, configured to acquire residual noise of the preset area, adjust the initial reverse sound wave based on the residual noise, and obtain a target reverse sound wave of the preset area;

[0205] a signal output module 14, configured to send the target reverse sound wave to the preset area;

[0206] When the cabin has passengers, the preset area is a passenger area and a driver area, and the passenger area and the driver area have corresponding target reverse sound waves respectively; when the cabin has no passengers, the preset area is the driver area.

[0207] Optionally, as shown in FIG. 5, the signal acquisition module 11 includes one or more of an acquisition sub-module 111, an acceleration sensor 112, a pressure sensor 113, a passenger monitoring system module 114, and a driver fatigue detection system module 115; the acquisition sub-module 111 is configured to acquire navigation sound and entertainment sound of the preset area; the acceleration sensor 112 is configured to acquire road noise sound of the preset area; the pressure sensor 113 is configured to detect whether there is a passenger on the seat; the passenger monitoring system module 114 is configured to detect whether the passenger is tired or asleep; and the driver fatigue detection system module 115 is configured to detect whether the driver is in a fatigue state.

[0208] For example, the acquisition sub-module 111 can acquire the navigation sound and the entertainment sound by interacting with the in-vehicle entertainment system.

[0209] The preset area can include a passenger area and a driver area, and the passenger area can include a co-driver area, a rear left area, a rear middle area, and a rear right area. Correspondingly, the number of acceleration sensors can be multiple, for example, each area has a corresponding acceleration sensor to acquire road noise sound of each area according to the acceleration sensor of each area.

[0210] The number of pressure sensors can also be multiple, for example, there are pressure sensors on the co-driver seat, the rear left seat, the rear middle seat, and the rear right seat, so that whether there is a passenger on each seat can be detected according to the pressure sensor on each seat.

[0211] Optionally, as shown in FIG. 5, the signal processing module 12 includes a processing sub-module 121, a loudspeaker 122 of the preset area, and a microphone 123 of the preset area;

[0212] The processing submodule 121 is configured to generate an initial reverse sound wave of the preset area according to the current sound signal; the loudspeaker 122 of the preset area is configured to emit the initial reverse sound wave and the target reverse sound wave; and the microphone 123 of the preset area is configured to acquire residual noise of the preset area.

[0213] For example, the preset area can include a passenger area and a driver area, and the passenger area can include a co-driver area, a rear left area, a rear middle area and a rear right area. Correspondingly, the number of loudspeakers can be multiple, and the number of microphones can be multiple. For example, each area has a corresponding loudspeaker to emit the initial reverse sound wave and the target reverse sound wave to the corresponding area, or multiple areas correspond to one loudspeaker. The headrest of each seat can be provided with a microphone to acquire the residual noise of each area according to the microphone at the headrest of each seat.

[0214] In some embodiments, the signal processing module 12 can further include a storage unit 124, which can be configured to store the result of the secondary channel compensation calibration in each cycle as a compensation signal, so that the target reverse sound wave can be compensated according to the compensation signal to enhance the noise reduction effect.

[0215] The cabin sound partition control system 10 provided by the embodiments of the present application can execute the above-mentioned method embodiments, and the specific implementation principles and technical effects can be referred to the above-mentioned method embodiments, which will not be described here again.

[0216] FIG. 6 shows a hardware structure schematic diagram of an electronic device provided by an embodiment of the present application. As shown in FIG. 6, the electronic device 20 is configured to implement the operations corresponding to the electronic device in any of the above-mentioned method embodiments. The electronic device 20 of the present embodiment can include a memory 21, a processor 22 and a communication interface 23.

[0217] The memory 21 is configured to store computer instructions. The memory 21 can include a high-speed random access memory (RAM), and can also include a non-volatile memory (NVM), such as at least one disk memory, and can also be a U disk, a mobile hard disk, a read-only memory, a magnetic disk or an optical disk, etc.

[0218] The processor 22 is configured to execute computer instructions stored in the memory to implement the method in the above embodiments. Details can be referred to the description of the above method embodiments. The processor 22 can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the application can be directly embodied as hardware processor execution or executed by a combination of hardware and software modules in the processor.

[0219] Optionally, the memory 21 can be independent or integrated with the processor 22.

[0220] The communication interface 23 can be connected with the processor 22. The processor 22 can control the communication interface 23 to realize the functions of receiving and sending signals.

[0221] The electronic device provided in the embodiment can be used to execute the above method, and the implementation manner and technical effects are similar. Details are not described herein.

[0222] The application further provides a computer readable storage medium, and the computer readable storage medium stores computer instructions. The computer instructions are executed by the processor to implement the method provided in the various embodiments.

[0223] The application further provides a computer program product, which includes computer instructions stored in a computer readable storage medium. At least one processor of a device can read the computer instructions from the computer readable storage medium, and the at least one processor executes the computer instructions to enable the device to implement the method provided in the various embodiments.

[0224] The application further provides a chip, which includes a memory and a processor. The memory is configured to store computer instructions, and the processor is configured to call and run the computer instructions from the memory, so that a device installed with the chip executes the method described in the various possible embodiments.

[0225] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part or all of the technical features. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A cockpit sound zone control method, wherein, The method comprises: acquiring a current sound signal of a preset area, generating an initial reverse sound wave of the preset area according to the current sound signal, and emitting the initial reverse sound wave to the preset area; acquiring residual noise of the preset area, adjusting the initial reverse sound wave based on the residual noise, and obtaining a target reverse sound wave of the preset area; emitting the target reverse sound wave to the preset area; wherein, when there is a passenger in the cabin, the preset area is a passenger area and a driver area, and the passenger area and the driver area have corresponding target reverse sound waves respectively; when there is no passenger in the cabin, the preset area is the driver area.

2. The method of claim 1, wherein, The method comprises: controlling an adaptive filter to generate an initial reverse sound wave of the preset area according to the current sound signal, and emitting the initial reverse sound wave through a loudspeaker corresponding to the preset area; The method comprises: controlling a microphone corresponding to the preset area to acquire residual noise of the preset area, inputting the residual noise into the filter, so that the adaptive filter adjusts the weight coefficient of the adaptive filter based on the residual noise, until the mean square value of the residual noise is the smallest, and then outputting a corresponding target reverse sound wave.

3. The method of claim 1 or 2, wherein, The method comprises: detecting whether there is a passenger in the cabin; if yes, acquiring a current sound signal of a passenger area and a current sound signal of a driver area, generating a first initial reverse sound wave of the passenger area according to the current sound signal of the passenger area, and generating a second initial reverse sound wave of the driver area according to the current sound signal of the driver area; controlling a loudspeaker corresponding to the passenger area to emit the first initial reverse sound wave, and controlling a loudspeaker corresponding to the driver area to emit the second initial reverse sound wave; if no, acquiring a current sound signal of a driver area, and generating a third initial reverse sound wave according to the current sound signal of the driver area.

4. The method of claim 3, wherein, The method comprises: judging whether the passenger is tired or falls asleep; if yes, acquiring navigation sound, entertainment sound and road noise sound of the passenger area, and generating a first initial reverse sound wave according to the navigation sound, the entertainment sound and the road noise sound of the passenger area; if no, acquiring navigation sound and road noise sound of the passenger area, and generating a first initial reverse sound wave according to the navigation sound and the road noise sound of the passenger area; The method comprises: judging whether the passenger plays entertainment sound; If yes, in response to a first operation of the driver, acquiring an entertainment sound and a road noise sound of the driver area, generating a second initial reverse sound wave according to the entertainment sound and the road noise sound of the driver area, or in response to a second operation of the driver, acquiring a road noise sound of the driver area, generating a second initial reverse sound wave according to the road noise sound of the driver area; If no, acquiring a road noise sound of the driver area, and generating a second initial reverse sound wave according to the road noise sound of the driver area.

5. The method of any one of claims 1-4, wherein, Before the acquiring of the current sound signal of the preset area, the method further comprises: Detecting whether the driver is in a fatigue state; If no, acquiring the current sound signal of the preset area; if yes, generating a fatigue reminder.

6. The method of any of claims 1-5, wherein, Before the emitting of the target reverse sound wave to the preset area, the method further comprises: Acquiring a compensation signal corresponding to the preset area; The emitting of the target reverse sound wave to the preset area specifically comprises: Compensating the target reverse sound wave by using the compensation signal to obtain a compensated reverse sound wave; Emitting the compensated reverse sound wave to the preset area.

7. The method of claim 6, wherein, The acquiring method of the compensation signal comprises: In response to a first operation of a user, performing secondary channel compensation calibration to acquire the compensation signal corresponding to the preset area; Or, in response to a second operation of the user, acquiring the compensation signal corresponding to the preset area in the last calibration.

8. The method of claim 7, wherein, The performing of the secondary channel compensation calibration specifically comprises: Controlling a loudspeaker corresponding to the preset area to emit a test signal of a preset volume; Controlling a microphone corresponding to the preset area to acquire the test signal; According to the test signal emitted by the loudspeaker corresponding to the preset area and the test signal acquired by the microphone corresponding to the preset area, calculating a secondary channel transfer function to obtain amplitude attenuation and phase shift information between the loudspeaker corresponding to the preset area and the microphone corresponding to the preset area; According to the amplitude attenuation and the phase shift information, determining the compensation signal corresponding to the preset area.

9. A cockpit sound zone control system, wherein, The system comprises: A signal acquiring module, configured to acquire a current sound signal of a preset area; A signal processing module, configured to generate an initial reverse sound wave of the preset area according to the current sound signal, and emit the initial reverse sound wave to the preset area; A feedback adjusting module, configured to acquire residual noise of the preset area, adjust the initial reverse sound wave based on the residual noise, and obtain a target reverse sound wave of the preset area; A signal output module, configured to emit the target reverse sound wave to the preset area; When there is a passenger in the cabin, the preset area is a passenger area and a driver area, and the passenger area and the driver area respectively have corresponding target reverse sound waves; when there is no passenger in the cabin, the preset area is the driver area.

10. The system of claim 9, wherein, The signal acquiring module comprises one or more of an acquiring sub-module, an acceleration sensor, a pressure sensor, a passenger monitoring system module, and a driver fatigue detection system module; The acquiring sub-module is configured to acquire a navigation sound and an entertainment sound of a preset area; The acceleration sensor is configured to acquire a road noise sound of a preset area; The pressure sensor is used for detecting whether there is a passenger on the seat. The passenger monitoring system module is used for detecting whether the passenger is tired or falls asleep. The driver fatigue detection system module is used for detecting whether the driver is in a fatigue state.

11. The system of claim 9 or 10, wherein, The signal processing module comprises a processing submodule, a speaker of the preset area and a microphone of the preset area; The processing submodule is used for generating an initial reverse sound wave of the preset area according to the current sound signal; The speaker of the preset area is used for emitting the initial reverse sound wave and the target reverse sound wave; The microphone of the preset area is used for acquiring residual noise of the preset area.

12. An electronic device, comprising: Comprise: A processor and a memory connected with the processor in communication; The memory stores computer execution instructions; The processor executes the computer execution instructions stored in the memory to realize the method in any one of claims 1 to 8.

13. A computer readable storage medium, wherein, The computer readable storage medium stores computer instructions, and the computer instructions are executed by the processor to realize the method in any one of claims 1 to 8.

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