CN116704994A - Active noise reduction fusion control method and device for automobile, terminal and storage medium - Google Patents
Active noise reduction fusion control method and device for automobile, terminal and storage medium Download PDFInfo
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- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
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Abstract
The application belongs to the technical field of automobiles, and particularly relates to an automobile active noise reduction fusion control method, an automobile active noise reduction fusion control device, a terminal and a storage medium. Comprising the following steps: step one, judging the execution logic of the vehicle machine; step two, the ANC is the active noise reduction controller executes logic judgment in the step one; and thirdly, the controller executes corresponding functions according to the logic judgment of the second step, so that the active noise reduction of the engine and the active noise reduction of road noise are realized. On the basis of active noise reduction of road noise, the application has no extra cost, only modifies the internal program, has no extra working procedures for parts, improves the active noise reduction effect, improves the NVH performance in the vehicle, reduces the power consumption and increases the running stability.
Description
Technical Field
The application belongs to the technical field of automobiles, and particularly relates to an automobile active noise reduction fusion control method, an automobile active noise reduction fusion control device, a terminal and a storage medium.
Background
The development of active noise reduction of automobiles is very rapid in the last three years, and research shows that the number of automobile types carrying active noise reduction technology in 2019 is less than 10, and the number of automobile types carrying active noise reduction technology in 2023 is more than 70. The active noise reduction technology of the automobile is divided into active noise reduction of engine noise, active noise reduction of road noise and active noise reduction of air conditioner noise. The engine active noise reduction method has the advantages of being relatively low in cost, mature in algorithm and low in engineering difficulty. The road noise active noise reduction technology is a main difficulty in researching and promoting mass production of enterprises at present due to higher cost and complex algorithm. At present, a majority of passenger cars with active noise reduction function only have an engine, and a few of the passenger cars have road noise active noise reduction function. The scheme which is not disclosed at present can integrate the active noise reduction of the engine and the active noise reduction of road noise, and brings better NVH experience to passengers in the vehicle.
The realization principle of active noise reduction in the vehicle is that a sound wave which counteracts the noise is emitted by a speaker in the vehicle, and a mute area is created in the head area of a passenger, so that the noise reduction is realized. The engine active noise reduction is to reversely offset the engine main order noise, belongs to narrow-band control, and has wider application at present. Road noise active noise reduction is to counter the road noise, random excitation of the road surface is transmitted into the vehicle through the wheels and the chassis structure, broadband noise is formed, the cost is high at present, and only a small part of vehicle types are provided with the road noise active noise reduction function.
Disclosure of Invention
The application provides an automobile active noise reduction fusion control method, an automobile active noise reduction fusion control device, a terminal and a storage medium, which can simultaneously realize an in-automobile engine active noise reduction technology and a road noise active noise reduction technology and solve the problem that the existing automobile type only has one of the two technologies.
The technical scheme of the application is as follows in combination with the accompanying drawings:
in a first aspect, an embodiment of the present application provides an active noise reduction fusion control method for an automobile, including:
step one, judging the execution logic of the vehicle machine;
step two, the ANC is the active noise reduction controller executes logic judgment in the step one;
and thirdly, the controller executes corresponding functions according to the logic judgment of the second step, so that the active noise reduction of the engine and the active noise reduction of road noise are realized.
Further, the specific method of the first step is as follows:
the vehicle machine judges the current state of the vehicle through CAN communication, inputs the current state of the vehicle into the ANC controller and judges whether to start a noise reduction program.
Further, the basis of the judgment is as follows: under the condition that the vehicle door is opened or the vehicle window is opened or the engine rotating speed is zero, the noise reduction program is not started; only when both the door and window are closed and the engine is started, the noise reduction routine is started.
Further, the specific method of the second step is as follows:
under the condition that the noise reduction program is started, vehicle power state information is obtained from CAN communication, and an engine active noise reduction function and a road noise active noise reduction function are selectively started according to a control strategy calibrated in the earlier stage.
Further, the control strategy of the early calibration is to design judgment logic in the real vehicle calibration process according to the power assembly noise and road noise characteristics of the vehicle; the specific principle is as follows:
a) When the vehicle speed V=0, the engine is started for active noise reduction, and the road noise is closed for active noise reduction;
b) When the vehicle speed V is more than 0 and V is less than 140km/h, the engine is actively noise-reduced and the road noise is actively noise-reduced and closed;
c) When the speed is more than 140km/h, the engine is actively noise-reduced and closed, and the road noise is actively noise-reduced and closed;
d) When the engine rotates at the speed=idling speed, the engine is started for active noise reduction, and the road noise is closed for active noise reduction;
e) When the engine speed is higher than idling and the noise of the main order of the engine is prominent, the engine is actively started in a noise reduction mode, and the road noise is actively started in a noise reduction mode;
f) When the engine speed is larger than idling and the noise of the main order of the engine is not prominent, the engine is actively noise-reduced and turned off, and the road noise is actively noise-reduced and turned on.
Further, the specific method of the third step is as follows:
the controller calls the control strategy of the second step, judges the switch of the engine active noise reduction function and the road noise active noise reduction function, calls the corresponding function module, generates the counteracted sound wave signal for noise reduction and outputs the counteracted sound wave signal through the loudspeaker, and achieves the effect of active noise reduction.
In a second aspect, an embodiment of the present application further provides an active noise reduction fusion control device for an automobile, which is characterized in that the device includes:
the judging module is used for judging the execution logic of the vehicle machine;
the execution module is used for performing logic judgment by the ANC, namely the active noise reduction controller;
and the control module is used for the logic judgment of the controller to execute corresponding functions and realize the active noise reduction of the engine and the active noise reduction of road noise.
In a third aspect, a terminal is provided, including:
one or more processors;
a memory for storing the one or more processor-executable instructions;
wherein the one or more processors are configured to:
the method according to the first aspect of the embodiment of the application is performed.
In a fourth aspect, a non-transitory computer readable storage medium is provided, which when executed by a processor of a terminal, enables the terminal to perform the method according to the first aspect of the embodiments of the application.
In a fifth aspect, an application product is provided, which when running at a terminal causes the terminal to perform the method according to the first aspect of the embodiments of the application.
The beneficial effects of the application are as follows:
on the basis of active noise reduction of road noise, the application has no extra cost, only modifies the internal program algorithm, has no extra working procedure for parts, improves the active noise reduction effect, improves the NVH performance in the vehicle, reduces the power consumption and increases the running stability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of an active noise reduction fusion control method for an automobile according to the present application;
FIG. 2 is a schematic structural diagram of an active noise reduction fusion control device for an automobile according to the present application;
fig. 3 is a schematic block diagram of a terminal structure.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
Example 1
Fig. 1 is a flowchart of an active noise reduction fusion control method for an automobile, which is provided in an embodiment of the present application, where the method may be implemented by an active noise reduction fusion control device for an automobile, and the device may be implemented in software and/or hardware.
Referring to fig. 1, an active noise reduction fusion control method for an automobile includes:
step one, judging the execution logic of the vehicle machine;
after the device is electrified, the vehicle machine judges the current state of the vehicle through CAN communication, and inputs the current state into an active noise reduction or ANC controller to judge whether to start a noise reduction program.
The basis of the judgment is as follows: under the condition that the vehicle door is opened or the vehicle window is opened or the engine rotating speed is zero, the noise reduction program is not started; only when both the door and window are closed and the engine is started, the noise reduction routine is started.
Step two, the ANC is the active noise reduction controller executes logic judgment in the step one;
under the condition that the noise reduction program is started, vehicle power state information is obtained from CAN communication, and an engine active noise reduction function and a road noise active noise reduction function are selectively started according to a control strategy calibrated in the earlier stage.
The control strategy of the early calibration is to design judgment logic in the real vehicle calibration process according to the noise and road noise characteristics of the power assembly of the vehicle; the specific principle is as follows:
a) When the vehicle speed V=0, the engine is started for active noise reduction, and the road noise is closed for active noise reduction;
b) When the vehicle speed V is more than 0 and V is less than 140km/h, the engine is actively noise-reduced and the road noise is actively noise-reduced and closed;
c) When the speed is more than 140km/h, the engine is actively noise-reduced and closed, and the road noise is actively noise-reduced and closed;
d) When the engine rotates at the speed=idling speed, the engine is started for active noise reduction, and the road noise is closed for active noise reduction;
e) When the engine speed is higher than idling and the noise of the main order of the engine is prominent, the engine is actively started in a noise reduction mode, and the road noise is actively started in a noise reduction mode;
f) When the engine speed is larger than idling and the noise of the main order of the engine is not prominent, the engine is actively noise-reduced and turned off, and the road noise is actively noise-reduced and turned on.
The method for judging the main order noise of the engine is characterized in that an NVH engineer uses professional noise testing equipment to conduct objective data testing and analyzes the result of noise data, and the result can show the working condition of the main order noise of the engine and is a specific working condition which needs to be started in an active noise reduction mode, and the specific working condition comprises information such as vehicle speed, gear, engine rotating speed interval and accelerator pedal opening.
And thirdly, the controller executes corresponding functions according to the logic judgment of the second step, so that the active noise reduction of the engine and the active noise reduction of road noise are realized.
The controller calls a control strategy of the second step according to the vehicle power state information including information such as vehicle speed, gear, engine speed, accelerator pedal opening and the like, judges the switch of the engine active noise reduction function and the road noise active noise reduction function, and calls a corresponding program module. The active noise reduction algorithm calculates according to the noise reduction microphone signal and the acceleration sensor signal, generates a counteracted sound wave signal for noise reduction and outputs the counteracted sound wave signal through a loudspeaker. The active noise reduction effect is achieved.
The weight coefficient updating formula of the engine active noise reduction is as follows:
wherein mu is a step factor; gamma is the leakage coefficient; beta is an anti-echo coefficient; w is a weight coefficient; x is x ij Is a reference signal; e is an error signal, a signal collected by a microphone;
the weight coefficient updating formula of the road noise active noise reduction is as follows:
wherein mu is jkm(f) Is a correction factor of the step length; x is X jkm(f) As a reference signal, a signal acquired by an acceleration sensor; e (E) m(f) Is the signal collected by the microphone.
In conclusion, the application can simultaneously realize the active noise reduction technology of the engine in the vehicle and the active noise reduction technology of road noise.
Example two
Referring to fig. 2, an active noise reduction fusion control device for an automobile includes:
the judging module is used for judging the execution logic of the vehicle machine;
the execution module is used for performing logic judgment by the ANC, namely the active noise reduction controller;
and the control module is used for the logic judgment of the controller to execute corresponding functions and realize the active noise reduction of the engine and the active noise reduction of road noise.
Example III
Fig. 3 is a block diagram of a terminal according to an embodiment of the present application, and the terminal may be a terminal according to the above embodiment. The terminal may be a portable mobile terminal such as: smart phone, tablet computer. Terminals may also be referred to by other names, user equipment, portable terminals, etc.
Generally, the terminal includes: a processor 301 and a memory 302.
Processor 301 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The processor 301 may be implemented in at least one hardware form of DSP (Digital Signal Processing ), FPGA (Field-Programmable Gate Array, field programmable gate array), PLA (Programmable Logic Array ). The processor 301 may also include a main processor, which is a processor for processing data in an awake state, also called a CPU (Central Processing Unit ), and a coprocessor; a coprocessor is a low-power processor for processing data in a standby state. In some embodiments, the processor 301 may integrate a GPU (Graphics Processing Unit, image processor) for rendering and drawing of content required to be displayed by the display screen. In some embodiments, the processor 301 may also include an AI (Artificial Intelligence ) processor for processing computing operations related to machine learning.
Memory 302 may include one or more computer-readable storage media, which may be tangible and non-transitory. Memory 302 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In some embodiments, a non-transitory computer readable storage medium in memory 302 is used to store at least one instruction for execution by processor 301 to implement an automotive active noise reduction fusion control method provided in the present application.
In some embodiments, the terminal may further optionally include: a peripheral interface 303, and at least one peripheral. Specifically, the peripheral device includes: at least one of radio frequency circuitry 304, touch screen 305, camera 306, audio circuitry 307, positioning component 308, and power supply 309.
The peripheral interface 303 may be used to connect at least one Input/Output (I/O) related peripheral to the processor 301 and the memory 302. In some embodiments, processor 301, memory 302, and peripheral interface 303 are integrated on the same chip or circuit board; in some other embodiments, either or both of the processor 301, the memory 302, and the peripheral interface 303 may be implemented on separate chips or circuit boards, which is not limited in this embodiment.
The Radio Frequency circuit 304 is configured to receive and transmit RF (Radio Frequency) signals, also known as electromagnetic signals. The radio frequency circuitry 304 communicates with a communication network and other communication devices via electromagnetic signals. The radio frequency circuit 304 converts an electrical signal into an electromagnetic signal for transmission, or converts a received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 304 includes: antenna systems, RF transceivers, one or more amplifiers, tuners, oscillators, digital signal processors, codec chipsets, subscriber identity module cards, and so forth. The radio frequency circuitry 304 may communicate with other terminals via at least one wireless communication protocol. The wireless communication protocol includes, but is not limited to: the world wide web, metropolitan area networks, intranets, generation mobile communication networks (2G, 3G, 4G, and 5G), wireless local area networks, and/or WiFi (Wireless Fidelity ) networks. In some embodiments, the radio frequency circuitry 304 may also include NFC (Near Field Communication ) related circuitry, which is not limiting of the application.
The touch display screen 305 is used to display a UI (User Interface). The UI may include graphics, text, icons, video, and any combination thereof. The touch screen 305 also has the ability to collect touch signals at or above the surface of the touch screen 305. The touch signal may be input as a control signal to the processor 301 for processing. The touch screen 305 is used to provide virtual buttons and/or virtual keyboards, also known as soft buttons and/or soft keyboards. In some embodiments, the touch display 305 may be one, providing a front panel of the terminal; in other embodiments, the touch display screen 305 may be at least two, respectively disposed on different surfaces of the terminal or in a folded design; in still other embodiments, the touch display 305 may be a flexible display disposed on a curved surface or a folded surface of the terminal. Even more, the touch display screen 305 may be arranged in an irregular pattern that is not rectangular, i.e., a shaped screen. The touch display 305 may be made of LCD (Liquid Crystal Display ), OLED (Organic Light-Emitting Diode) or other materials.
The camera assembly 306 is used to capture images or video. Optionally, the camera assembly 306 includes a front camera and a rear camera. In general, a front camera is used for realizing video call or self-photographing, and a rear camera is used for realizing photographing of pictures or videos. In some embodiments, the number of the rear cameras is at least two, and the rear cameras are any one of a main camera, a depth camera and a wide-angle camera, so as to realize fusion of the main camera and the depth camera to realize a background blurring function, and fusion of the main camera and the wide-angle camera to realize a panoramic shooting function and a Virtual Reality (VR) shooting function. In some embodiments, camera assembly 306 may also include a flash. The flash lamp can be a single-color temperature flash lamp or a double-color temperature flash lamp. The dual-color temperature flash lamp refers to a combination of a warm light flash lamp and a cold light flash lamp, and can be used for light compensation under different color temperatures.
The audio circuit 307 is used to provide an audio interface between the user and the terminal. The audio circuit 307 may include a microphone and a speaker. The microphone is used for collecting sound waves of users and environments, converting the sound waves into electric signals, and inputting the electric signals to the processor 301 for processing, or inputting the electric signals to the radio frequency circuit 304 for voice communication. For the purpose of stereo acquisition or noise reduction, a plurality of microphones can be respectively arranged at different parts of the terminal. The microphone may also be an array microphone or an omni-directional pickup microphone. The speaker is used to convert electrical signals from the processor 301 or the radio frequency circuit 304 into sound waves. The speaker may be a conventional thin film speaker or a piezoelectric ceramic speaker. When the speaker is a piezoelectric ceramic speaker, not only the electric signal can be converted into a sound wave audible to humans, but also the electric signal can be converted into a sound wave inaudible to humans for ranging and other purposes. In some embodiments, the audio circuit 307 may also include a headphone jack.
The location component 308 is used to locate the current geographic location of the terminal to enable navigation or LBS (Location Based Service, location-based services). The positioning component 308 may be a positioning component based on the United states GPS (Global Positioning System ), the Beidou system of China, or the Galileo system of Russia.
The power supply 309 is used to power the various components in the terminal. The power source 309 may be alternating current, direct current, disposable or rechargeable. When the power source 309 comprises a rechargeable battery, the rechargeable battery may be a wired rechargeable battery or a wireless rechargeable battery. The wired rechargeable battery is a battery charged through a wired line, and the wireless rechargeable battery is a battery charged through a wireless coil. The rechargeable battery may also be used to support fast charge technology.
Those skilled in the art will appreciate that the structure shown in fig. 3 is not limiting of the terminal and may include more or fewer components than shown, or may combine certain components, or may employ a different arrangement of components.
Example IV
In an exemplary embodiment, there is also provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method for controlling active noise reduction fusion of an automobile as provided in all the inventive embodiments of the present application.
Any combination of one or more computer readable media may be employed. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
Example five
In an exemplary embodiment, an application program product is also provided, including one or more instructions executable by the processor 301 of the above device to perform an active noise reduction fusion control method of an automobile.
Although embodiments of the present application have been disclosed above, they are not limited to the use listed in the description and modes of implementation. It can be applied to various fields suitable for the present application. Additional modifications will readily occur to those skilled in the art. Therefore, the application is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (9)
1. The active noise reduction fusion control method for the automobile is characterized by comprising the following steps of:
step one, judging the execution logic of the vehicle machine;
step two, the ANC is the active noise reduction controller executes logic judgment in the step one;
and thirdly, the controller executes corresponding functions according to the logic judgment of the second step, so that the active noise reduction of the engine and the active noise reduction of road noise are realized.
2. The method for controlling the active noise reduction fusion of the automobile according to claim 1, wherein the specific method in the first step is as follows:
the vehicle machine judges the current state of the vehicle through CAN communication, inputs the current state of the vehicle into the ANC controller and judges whether to start a noise reduction program.
3. The method for controlling the active noise reduction fusion of the automobile according to claim 2, wherein the basis of the judgment is as follows: under the condition that the vehicle door is opened or the vehicle window is opened or the engine rotating speed is zero, the noise reduction program is not started; only when both the door and window are closed and the engine is started, the noise reduction routine is started.
4. The method for controlling the active noise reduction fusion of the automobile according to claim 2, wherein the specific method of the second step is as follows:
under the condition that the noise reduction program is started, vehicle power state information is obtained from CAN communication, and an engine active noise reduction function and a road noise active noise reduction function are selectively started according to a control strategy calibrated in the earlier stage.
5. The method for controlling the active noise reduction fusion of the automobile according to claim 4, wherein the control strategy of the early calibration is to design judgment logic in the actual automobile calibration process according to the noise and road noise characteristics of a power assembly of the automobile; the specific principle is as follows:
a) When the vehicle speed V=0, the engine is started for active noise reduction, and the road noise is closed for active noise reduction;
b) When the vehicle speed V is more than 0 and V is less than 140km/h, the engine is actively noise-reduced and the road noise is actively noise-reduced and closed;
c) When the speed is more than 140km/h, the engine is actively noise-reduced and closed, and the road noise is actively noise-reduced and closed;
d) When the engine rotates at the speed=idling speed, the engine is started for active noise reduction, and the road noise is closed for active noise reduction;
e) When the engine speed is higher than idling and the noise of the main order of the engine is prominent, the engine is actively started in a noise reduction mode, and the road noise is actively started in a noise reduction mode;
f) When the engine speed is larger than idling and the noise of the main order of the engine is not prominent, the engine is actively noise-reduced and turned off, and the road noise is actively noise-reduced and turned on.
6. The method for controlling the active noise reduction fusion of the automobile according to claim 1, wherein the specific method in the third step is as follows:
the controller calls the control strategy of the second step, judges the switch of the engine active noise reduction function and the road noise active noise reduction function, calls the corresponding function module, generates the counteracted sound wave signal for noise reduction and outputs the counteracted sound wave signal through the loudspeaker, and achieves the effect of active noise reduction.
7. An automotive active noise reduction fusion control device is characterized by comprising:
the judging module is used for judging the execution logic of the vehicle machine;
the execution module is used for performing logic judgment by the ANC, namely the active noise reduction controller;
and the control module is used for the logic judgment of the controller to execute corresponding functions and realize the active noise reduction of the engine and the active noise reduction of road noise.
8. A terminal, comprising:
one or more processors;
a memory for storing the one or more processor-executable instructions;
wherein the one or more processors are configured to:
a vehicle active noise reduction fusion control method according to any one of claims 1 to 6 is performed.
9. A non-transitory computer readable storage medium, characterized in that instructions in the storage medium, when executed by a processor of a terminal, enable the terminal to perform a method of active noise reduction fusion control of a vehicle according to any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310611928.2A CN116704994A (en) | 2023-05-29 | 2023-05-29 | Active noise reduction fusion control method and device for automobile, terminal and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310611928.2A CN116704994A (en) | 2023-05-29 | 2023-05-29 | Active noise reduction fusion control method and device for automobile, terminal and storage medium |
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| CN116704994A true CN116704994A (en) | 2023-09-05 |
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|---|---|---|---|
| CN202310611928.2A Pending CN116704994A (en) | 2023-05-29 | 2023-05-29 | Active noise reduction fusion control method and device for automobile, terminal and storage medium |
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| Country | Link |
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| CN (1) | CN116704994A (en) |
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2023
- 2023-05-29 CN CN202310611928.2A patent/CN116704994A/en active Pending
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