Vehicle interior noise reduction method, vehicle, and storage medium

Abstract

The embodiment of the present application provides a kind of vehicle interior noise reduction method, equipment and storage medium, the method comprises: the first noise of vehicle interior is collected, the first noise characteristic information of the first noise is determined and the first position information of generating the first noise;According to the first noise characteristic information and the first position information, the first audio characteristic information of the first noise reaching each preset position is determined;According to the first audio characteristic information of each preset position, the directional audio playing equipment at each first position is controlled respectively to generate the second audio opposite the phase of corresponding first noise, to eliminate the first noise at each preset position. It is intended to reduce the noise in the vehicle interior without increasing sound insulation material and damping device, improve the ride experience effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of noise processing, in particular to a vehicle interior noise reduction method, a vehicle and a storage medium. BACKGROUND

[0002] The vehicle interior noise mainly comes from two ways, one is the air vibration in the vehicle caused by the vehicle body vibration, and the other is the vehicle exterior noise transmitted into the vehicle through the places where the vehicle is not tightly closed. At present, in order to reduce the vehicle interior noise, the conventional method is to increase the sound insulation material in the vehicle interior and install the damping device. However, the above-mentioned means not only causes the increase of the vehicle cost, but also with the increase of the vehicle service life, the aging of the sound insulation material and the falling off of the damping device phenomenon appear, which not only makes the sound insulation effect decrease, but also causes the vibration aggravation phenomenon. Therefore, how to reduce the vehicle interior noise is still a technical problem to be solved. SUMMARY

[0003] The present application provides a vehicle interior noise reduction method, a vehicle and a storage medium, by combining the first noise characteristic information corresponding to the first noise in the vehicle interior and the first position information of the first noise to determine the first audio characteristic information of the first noise reaching each preset position, and further controlling the directional audio playback device at each preset position to generate corresponding second audio characteristic information according to the first audio characteristic information of the first noise reaching each preset position, so as to eliminate the first noise at each preset position, aiming at reducing the vehicle interior noise without increasing the sound insulation material and the damping device, and improving the riding experience effect.

[0004] In a first aspect, an embodiment of the present application provides a vehicle interior noise reduction processing method, the method comprising:

[0005] Collecting the first noise in the vehicle interior, the first noise comprising first noise characteristic information and first position information of the first noise generation;

[0006] According to the first noise characteristic information and the first position information, determining the first audio characteristic information of the first noise reaching each preset position;

[0007] According to the first audio characteristic information of each preset position, respectively controlling the directional audio playback device at each first position to generate the second audio with opposite phase to the corresponding first noise, and the second audio has the first audio characteristic information.

[0008] In a second aspect, an embodiment of the present application provides a vehicle, comprising a processor, a memory, a computer program stored in the memory and executable by the processor, and a data bus for realizing connection communication between the processor and the memory, wherein the computer program, when executed by the processor, realizes the steps of the vehicle interior noise reduction processing method according to the first aspect.

[0009] In a third aspect, an embodiment of the present application provides a storage medium for computer readable storage, the storage medium storing one or more programs, the one or more programs being executable by one or more processors to realize the steps of the vehicle interior noise reduction processing method according to the first aspect.

[0010] The embodiment of the present application provides a vehicle interior noise reduction processing method, a vehicle and a storage medium. The vehicle interior noise reduction processing method provided by the embodiment of the present application first acquires a first noise in a vehicle interior, determines first noise characteristic information of the first noise and first position information of the first noise, then determines first audio characteristic information of the first noise reaching each preset position according to the first noise characteristic information and the first position information, and finally controls directional audio playing devices at each preset position to generate second audio with a phase opposite to that of the corresponding first noise according to the first audio characteristic information of each preset position, so as to eliminate the first noise at each preset position. The first noise characteristic information corresponding to the first noise in the vehicle interior and the first position information of the first noise are combined to determine the first audio characteristic information of the first noise reaching each preset position. The directional audio playing devices at each preset position are controlled to generate second audio with a phase opposite to that of the corresponding first noise and with the first audio characteristic information according to the first audio characteristic information of the first noise reaching each preset position, so as to eliminate the first noise at each preset position. The purpose is to reduce the noise in the vehicle interior without increasing sound insulation materials and damping devices. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. 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.

[0012] Figure 1 is a scene schematic diagram suitable for the embodiment of the present application;

[0013] Figure 2 is a schematic block diagram of a vehicle interior noise reduction processing device provided by the embodiment of the present application;

[0014] Figure 3is an implementation flowchart of a vehicle interior noise reduction method provided by an embodiment of the present application;

[0015] Figure 4 is an implementation flowchart of a vehicle interior noise reduction method provided by another embodiment of the present application;

[0016] Figure 5 is a schematic block diagram of a vehicle interior noise reduction system provided by an embodiment of the present application. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all 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.

[0018] The flowchart shown in the drawings is only an example and does not necessarily include all the contents and operations / steps, nor does it necessarily be executed in the order described. For example, some operations / steps can be further decomposed, combined or partially merged, so the actual execution order can be changed according to the actual situation.

[0019] It should be understood that the terms used in the present application specification are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the present application specification and the appended claims, unless otherwise clear from the context, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0020] The embodiments of the present application provide a vehicle interior noise reduction method, a vehicle and a storage medium. By combining first noise characteristic information corresponding to first noise in a vehicle interior and first position information of the first noise, first audio characteristic information of the first noise reaching each preset position is determined, and further, a directional audio playing device at each preset position is controlled to generate second audio with a phase opposite to that of the first noise according to the first audio characteristic information of the first noise reaching each preset position, so as to eliminate the first noise at each preset position. The purpose is to reduce the noise in the vehicle interior without increasing sound insulation materials and damping devices.

[0021] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the case of no conflict, the embodiments described below and the features in the embodiments can be combined with each other.

[0022] Please refer to Figure 1 , Figure 1 is a schematic block diagram of a scene suitable for the embodiments of the present application.

[0023] AsFigure 1 As shown, the vehicle interior noise reduction method provided by the embodiment of the present application is applicable to the vehicle 10.

[0024] As shown in the figure, the vehicle interior noise reduction method provided by the embodiment of the present application is applicable to the vehicle 10. Figure 1 It can be seen that the vehicle 10 provided by the embodiment is a bus. It should be understood that in actual application, the vehicle 10 can be various models of family cars, vans or taxis, etc. Specifically, in the embodiment, the vehicle 10 is not specifically limited and can be various vehicles for users to ride.

[0025] The vehicle 10 is internally provided with a plurality of seats 102 and a plurality of predetermined key positions prone to vibration or noise generation; wherein the key positions are not specifically shown in the figure and can be a chassis, a seat, a window or a door, etc. Specifically, when the vehicle 10 is running in different modes such as acceleration or deceleration mode, the vehicle body may vibrate due to the road surface or other objective reasons, thereby generating vibrations of different amplitudes at the predetermined key positions. These vibrations will be transmitted to each seat 102 at different frequencies in the vehicle cabin and generate noise at the corresponding seating positions of each seat 102, affecting the user experience. Or when the vehicle 10 is running in different modes, external noise enters the vehicle cabin through the window, air vent or door gap. When these noises are transmitted to the corresponding seating positions of each seat 102, they will also affect the user experience. Figure 1

[0026] The present application is to solve the above technical problems. Without using noise reduction materials and adding shockproof devices, the vehicle interior noise reduction device 106 is deployed inside the vehicle 10 to eliminate the first noise reaching each predetermined position, improve the user experience, and reduce the cost of vehicle noise reduction. It should be noted that the vehicle interior noise reduction device 106 can be an integrated hardware module or software program. The corresponding hardware module or software program can be controlled by the processor of the vehicle 10 to realize the corresponding function. Specifically, it can be seen from the vehicle structure diagram as shown in the figure. The vehicle interior noise reduction device 106 as an integrated hardware module or software program can be displayed in the form of a functional module and can be set at any position inside the vehicle 10 or the vehicle cabin. For example, as shown in the figure, in the embodiment, the vehicle interior noise reduction device 106 is set on the box near the tail. Figure 5 Figure 1

[0027] In addition, the vehicle 10 can also be connected to a background server network to update the noise information and noise characteristic information pre-stored by the background server in real time.

[0028] Specifically, as shown in the figure, the vehicle interior noise reduction device 106 is connected to the background server through the network to update the noise information and noise characteristic information pre-stored by the background server in real time. Figure 2 ​​​As shown, the vehicle interior noise reduction device 106 includes a collection module 1061, a determination module 1062, and a control module 1063. The collection module 1061 includes an audio collection module 1064 and a vibration detection module 1066 arranged at key positions, for collecting first noise of the vehicle 10 in a corresponding driving state, and determining first noise characteristic information of the first noise and first position information of the first noise; the audio collection module 1064 or the vibration detection module 1066 sends the collected first noise to the determination module 1062, and the determination module 1062 determines first audio characteristic information of the first noise reaching each preset position according to the first noise characteristic information and the first position information; the control module 1063 controls the directional audio playing device at each preset position to generate second audio with a phase opposite to the corresponding first noise according to the first audio characteristic information of each preset position, wherein the second audio has the first audio characteristic information of the first noise, so as to eliminate the first noise at each preset position.

[0029] It should be noted that the above-described embodiments are merely illustrative, wherein the modules described as separate components can or can not be physically separated, and the components displayed as modules can or can not be physical modules, i.e., can be located in one place or distributed on multiple network modules. Part or all of the modules can be selected according to actual needs to achieve the purpose of the present embodiment. In addition, the device provided by the present application is arranged in the vehicle interior, and the connection relationship between the modules indicates that they have communication connection therebetween, which can be implemented as one or more communication buses or signal lines.

[0030] Next, the steps of the vehicle interior noise reduction method provided by the embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0031] Please refer to Figure 3 As shown, Figure 3 is the implementation flowchart of the vehicle interior noise reduction method provided by an embodiment of the present application. The vehicle interior noise reduction method can be implemented by Figure 1 the vehicle shown in the figure.

[0032] As Figure 3 shown, the vehicle interior noise reduction method includes steps S301 to S303. Details are as follows:

[0033] S301, collecting first noise in the vehicle interior, and determining first noise characteristic information of the first noise and first position information of the first noise.

[0034] The first noise of the vehicle in the current driving state can be collected. Specifically, the current driving state can be different driving states such as acceleration driving, deceleration driving, or uniform speed driving. The first noise of the vehicle driving in a preset time period can also be collected. Specifically, during the driving of the vehicle, on the one hand, the vehicle itself can vibrate, and the vibration propagates to the user's seating position in the vehicle cabin, generating noise and affecting the user's riding experience. On the other hand, the noise outside the vehicle can enter the vehicle cabin through the vehicle cabin gaps such as the vehicle window, the vehicle door, or the air flow hole, and affect the user's riding experience. In this embodiment, the vibration detection module is installed at the preset position prone to vibration, and the vibration detection module is controlled to collect whether vibration occurs at each preset position in real time. The audio collection module is installed at the vehicle cabin gap position, and the audio collection module is controlled to collect the noise entering the vehicle cabin in real time, so as to obtain the first noise inside the vehicle. That is, the first noise includes vibration noise and audio noise, or the first noise includes at least one of vibration noise and audio noise.

[0035] Specifically, the first noise inside the vehicle is collected, including: controlling the vibration detection module pre-set at different preset positions inside the vehicle to collect the vibration noise at the different preset positions inside the vehicle in real time or periodically at a preset period; and controlling the audio collection module pre-set at each vehicle cabin gap to collect the audio noise at the vehicle cabin gap in real time or periodically at a preset period.

[0036] The vibration detection module can be a vibration measurement sensor, and the audio collection module can be various existing audio collectors.

[0037] In specific implementation, the first noise characteristic information includes first vibration amplitude information and / or first audio decibel value.

[0038] It should be understood that the first noise characteristic information is only exemplarily given in this embodiment, and does not constitute a limitation on the first noise characteristic information. In some other embodiments of the present application, the first noise characteristic information can also include at least one of vibration frequency information, vibration energy information, audio frequency information, or audio energy information.

[0039] In addition, in this embodiment, the position information corresponding to the vibration detection module or the audio collection module is taken as the first position information of the first noise. Specifically, the determination of the first position information of the first noise includes: obtaining the first position information of the first noise according to the second position information corresponding to each vibration detection module and / or each audio collection module that collects the first noise.

[0040] S302, determine first audio characteristic information of the first noise reaching each preset position according to the first noise characteristic information and the first position information.

[0041] In an embodiment, the determining of the audio characteristic information of the first noise reaching each preset position according to the first noise characteristic information and the first position information of the first noise comprises: determining second audio characteristic information corresponding to second noise characteristic information and preset position information matching the first noise characteristic information and the first position information according to a correspondence relationship between the pre-stored second noise characteristic information, each preset position information and second audio characteristic information, and taking the second audio characteristic information as the audio characteristic information of the first noise reaching each preset position.

[0042] Specifically, the first noise characteristic information and the first position information can be compared with pre-stored noise characteristic information and position information respectively to obtain second noise matching the first noise; second noise characteristic information corresponding to the second noise and second audio characteristic information reaching each preset position are obtained, and each obtained second audio characteristic information is taken as the first audio characteristic information corresponding to the first noise characteristic information and the first position information, that is, the first audio characteristic information of the first noise reaching each preset position.

[0043] The second noise is vibration noise generated in a preset position in a vehicle cabin under different driving states of the vehicle or audio noise entering the cabin gap, and in this embodiment, second audio characteristic information such as audio decibel value and / or audio frequency generated by the vibration noise reaching different seating positions is recorded, or second audio characteristic information such as audio attenuation value when the audio noise entering the cabin reaches different seating positions is recorded, and a correlation mapping relationship between the second noise and the corresponding second audio characteristic information is further established, so that after the first noise is collected and matched with the second noise, the first audio characteristic information corresponding to the first noise is obtained through the second audio characteristic information corresponding to the second noise matching the first noise, and then the first noise at each preset position is eliminated according to the first audio characteristic information.

[0044] For example, in an embodiment, the first noise is vibration noise, and correspondingly, the determining of the first audio characteristic information of the first noise reaching each preset position according to the first noise characteristic information and the first position information comprises:

[0045] The first position information of the first noise is matched with the second position information of each second noise, each second noise pre-existing at the first position information corresponding to the first noise is determined, the first vibration amplitude information of the first noise is matched with the second vibration amplitude information corresponding to each second noise pre-existing at the first position information, if the second amplitude information of the second noise matches the first amplitude information, it is determined that the second noise matches the first noise, the audio decibel value of the second noise transmitted to each preset position is obtained, and / or the audio frequency is taken as the first audio characteristic information of the first noise reaching each preset position.

[0046] For example, in another embodiment, the first noise is an audio noise, and correspondingly, the first audio characteristic information of the first noise reaching each preset position is determined according to the first noise characteristic information and the first position information, including:

[0047] The first position information of the first noise is matched with the second position information of each second noise, each second noise pre-existing at the first position information corresponding to the first noise is determined, the first audio decibel value of the first noise is matched with the second audio decibel value corresponding to each second noise pre-existing at the first position information, if the second audio decibel value of the second noise matches the first audio decibel value, it is determined that the second noise matches the first noise, the audio attenuation value of the second noise transmitted to each preset position is obtained, and the audio attenuation value is taken as the first audio characteristic information of the first noise reaching each preset position.

[0048] S303, according to the first audio characteristic information of each preset position, respectively control each said first position of the directional audio playing device to generate a second audio with opposite phase to the corresponding first noise, the second audio has the first audio characteristic information.

[0049] In specific implementation, the directional audio playing devices can be installed in advance at or near (within a preset radius) the parts inside the vehicle where vibration is easy to occur, the direction of each directional audio playing device respectively points to the preset seat position, for example, the vehicle is a car including 5 seats, 5 small directional audio playing devices are respectively installed at each part where vibration is easy to occur, the 5 small directional audio playing devices respectively point to the 5 seats, and are used to generate directional audio to eliminate noise at different seat positions.

[0050] When the vehicle detects the vibration noise during driving, the vibration noise is compared with the vibration noises in the preset database, including position comparison and vibration amplitude comparison. When the two are consistent, the audio characteristic information generated by the vibration noise reaching different seating positions is immediately obtained. According to the audio characteristic information, the directional audio playing device at the position where the vibration noise is generated is controlled to output directional sound, which is respectively directed to the preset position. The directional sound output by the audio playing device is consistent with the sound caused by the vibration noise, but the phase difference is 180°. The vibration noise and the noise reduction sound cancel each other out at each preset position, eliminate the noise generated by the vibration noise in the vehicle cabin, eliminate the influence on the user, and improve the user's riding experience.

[0051] In addition, the sound collecting module is added at the position where the air gap of the vehicle cabin and the outside flow, including the air conditioning inlet hole, the door or the window, and the like. The audio noise such as the corresponding sound signal physical parameter, including the audio decibel value or the frequency, entering the vehicle cabin from the outside is collected. The audio attenuation value when the external audio is transmitted to different seating positions through different gaps is simulated in the laboratory in advance. According to the audio attenuation value, the audio noise entering the vehicle cabin is actively reduced. Specifically, the audio playing system pre-installed at each gap position in the vehicle cabin can generate the noise reduction audio signal with the same decibel value but with a phase difference of 180° as the audio entering the vehicle cabin. The audio noise entering the vehicle cabin and the noise reduction audio signal will cancel each other out in the process of reaching different preset positions, so that the driver or passenger sitting at each preset position cannot hear the audio noise entering from the outside.

[0052] In specific implementation, the directional audio playing device can be installed at each gap of the vehicle cabin or within the preset radius range of each gap, such as the window, the door or other air flow holes. The direction of each directional audio playing device is respectively directed to the preset seating position. For example, the vehicle is a car including 5 seats. Five small directional audio playing devices are respectively installed within the preset radius range of each gap. The five small directional audio playing devices are respectively directed to the five seats, and are used to generate directional audio to eliminate the noise at different seating positions.

[0053] In addition, it should be understood that, in the specific implementation, if the detected vibration noise has no matching second noise in the database, the vibration noise is transmitted to the background server, so that the background server simulates the vibration noise through the preset noise simulation model, and simulates the noise characteristic information generated by the vibration noise reaching different seating positions. Based on the noise characteristic information, the corresponding directional audio playing device generates the corresponding noise reduction audio. The vibration noise and the corresponding noise characteristic information can be stored in the corresponding database of the vehicle, and the vehicle database is dynamically updated.

[0054] It can be known through the above analysis that the vehicle interior noise reduction method provided by the embodiment of the application firstly collects the first noise in the vehicle interior, determines the first noise characteristic information of the first noise and the first position information of the first noise; then determines the first audio characteristic information of the first noise reaching each preset position according to the first noise characteristic information and the first position information; and finally controls the directional audio playing device at each preset position to generate corresponding second audio characteristic information according to the first audio characteristic information of each preset position, so as to eliminate the first noise at each preset position. The first noise characteristic information corresponding to the first noise in the vehicle interior and the first position information of the first noise are combined to determine the first audio characteristic information of the first noise reaching each preset position, and the directional audio playing device at each preset position is further controlled to generate the second audio with a phase opposite to that of the first noise according to the first audio characteristic information of the first noise reaching each preset position, wherein the second audio has the first audio characteristic information, so as to eliminate the first noise at each preset position, and the purpose is to reduce the noise in the vehicle interior without increasing sound insulation materials and damping devices.

[0055] Please refer to Figure 4 , as shown in the figure, Figure 4 is the implementation flowchart of the vehicle interior noise reduction method provided by another embodiment of the application. It can be known from Figure 3 that the embodiment is the same as the embodiment shown in the figure in the specific implementation process of S401 and S301 and S405 to S406 and S302 to S303, and the difference is that S402 and S404 are further included before S404, wherein S402 and S401 are in parallel execution relationship and can be executed alternatively. Details are as follows: Figure 3

[0056] S401, collect the first noise in the vehicle interior, and determine the first noise characteristic information of the first noise and the first position information of the first noise.

[0057] S402, simulate the second noise generated by different positions in the vehicle interior and / or at the compartment gap under various preset driving modes of the vehicle.

[0058] S403, determine the second audio characteristic information of the second noise transmitted to each preset position.

[0059] The second noise includes second vibration amplitude information and / or a second audio decibel value; and the second audio characteristic information includes an audio decibel value, an audio frequency, or an audio attenuation value.

[0060] ​In an embodiment, the determining the second noise characteristic information transmitted to the second audio characteristic information at the preset positions comprises: if the second noise is the second vibration amplitude information, determining an audio decibel value and / or an audio frequency transmitted to the second vibration amplitude information at the preset positions; and if the second noise is the second audio decibel value, determining an audio attenuation value transmitted to the second audio decibel value at the preset positions.

[0061] S404, extracting second noise characteristic information of the second noise, and establishing a corresponding relationship among the second noise characteristic information, preset position information and second audio characteristic information.

[0062] S405, according to the corresponding relationship, determining second noise characteristic information and preset position information corresponding to the second audio characteristic information matched with the first noise characteristic information and the first position information, and taking the second audio characteristic information as the audio characteristic information of the first noise reaching the preset positions.

[0063] S406, according to the first audio characteristic information of the preset positions, respectively controlling the directional audio playing devices at the preset positions to generate second audio corresponding to the first noise in opposite phase, and the second audio has the first audio characteristic information.

[0064] It can be known from the above analysis that the vehicle interior noise reduction method provided by the embodiment of the present application firstly collects the first noise in the vehicle interior, determines the first noise characteristic information of the first noise and the first position information of the first noise, then according to the first noise characteristic information and the first position information, determines the first audio characteristic information of the first noise reaching the preset positions, and finally according to the first audio characteristic information of the preset positions, respectively controls the directional audio playing devices at the preset positions to generate corresponding second audio characteristic information, so as to eliminate the first noise at the preset positions. By combining the first noise characteristic information corresponding to the first noise in the vehicle interior and the first position information of the first noise, the first audio characteristic information of the first noise reaching the preset positions is determined, and further according to the first audio characteristic information of the first noise reaching the preset positions, the directional audio playing devices at the preset positions are controlled to generate second audio in opposite phase corresponding to the first noise, so as to eliminate the first noise at the preset positions, which aims to reduce the noise in the vehicle interior without increasing sound insulation materials and damping devices.

[0065] Please refer to Figure 5 , Figure 5 is a schematic block diagram of the vehicle interior noise reduction system provided by the embodiment of the present application.

[0066] As Figure 5As shown, the vehicle interior noise reduction system 500 includes a processor 501, a memory 502, a communication interface 503 and a bus 504. Among them, the processor 501, the memory 502 and the communication interface 503 communicate through the bus 504, and can also realize communication through wireless transmission and other means. The memory 502 stores executable program codes, and the processor 501 can call the program codes stored in the memory 502 to execute the vehicle interior noise reduction method in the foregoing method embodiments. That is, the vehicle interior noise reduction method described above can be realized by the vehicle shown in the vehicle interior noise reduction method. Figure 3 or Figure 4 The vehicle interior noise reduction method shown can be realized by the processor 501 in the vehicle calling the program codes stored in the memory 502 to execute. Figure 5

[0067] It should be understood that in the embodiments of the present application, the processor 501 can be a central processing unit CPU, and the processor 501 can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor, etc.

[0068] The memory 502 can include read-only memory and random access memory, and provide instructions and data for the processor 501. The memory 502 can also include non-volatile random access memory. For example, the memory 502 can also store data sets.

[0069] ​The memory 502 can be a volatile memory or a nonvolatile memory, or can include both volatile and nonvolatile memory. Among them, the nonvolatile memory can be a read-only memory (ROM), a programmable ROM (PROM), an erasable PROM (EPROM), an electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example, and not limitation, many forms of RAM can be used, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous dynamic RAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0070] The bus 504 can include, in addition to the data bus, a power bus, a control bus, and a state signal bus, etc. However, for the sake of clarity, all the buses are marked as bus 504 in the figure.

[0071] It should be understood that the vehicle interior noise reduction system 500 according to the embodiments of the present application corresponds to the corresponding subject performing the method according to the embodiments of the present application, and for the sake of brevity, it will not be repeated here. Illustratively, the computer program stored on the memory 502 in the vehicle interior noise reduction system 500 and executable by the processor 501 is executed by the processor 501, and the following steps are implemented: Figure 3 to Figure 4

[0072] Collecting a first noise in the vehicle interior, determining first noise characteristic information of the first noise and first position information of the first noise;

[0073] According to the first noise characteristic information and the first position information, determining first audio characteristic information of the first noise reaching each preset position;

[0074] ​According to the first audio characteristic information of each preset position, the directional audio playing device at each first position is controlled to generate second audio opposite to the first noise in phase, and the second audio has the first audio characteristic information.

[0075] In an embodiment, the first audio characteristic information of the first noise reaching each preset position is determined according to the first noise characteristic information and the first position information, including:

[0076] According to the correspondence between the pre-stored noise characteristic information, position information and audio characteristic information, the first audio characteristic information corresponding to the first noise characteristic information and the first position information is obtained.

[0077] In an embodiment, the first noise characteristic information includes first vibration amplitude information and / or first audio decibel value.

[0078] In an embodiment, before the first noise is compared with the second noise simulated in advance, it further includes:

[0079] The second noise generated by the vehicle in different positions inside the vehicle and / or at the gap of the vehicle compartment in various driving modes is simulated;

[0080] The second audio characteristic information of the second noise transmitted to each preset position is determined;

[0081] The second noise characteristic information of the second noise is extracted, and the correspondence between the second noise characteristic information, each preset position information and second audio characteristic information is established.

[0082] In an embodiment, the second noise includes second vibration amplitude information and / or second audio decibel value; and the second audio characteristic information includes audio decibel value, audio frequency and / or audio attenuation value.

[0083] The determination of the second audio characteristic information of the second noise transmitted to each preset position includes:

[0084] If the second noise is the second vibration amplitude information, the audio decibel value and / or audio frequency of the second vibration amplitude information transmitted to each preset position is determined.

[0085] If the second noise is the second audio decibel value, the audio attenuation value of the second audio decibel value transmitted to each preset position is determined.

[0086] In an embodiment, the first noise includes vibration noise and / or audio noise.

[0087] In an embodiment, the first noise inside the vehicle is collected, including:

[0088] The vibration detection module pre-set at different preset positions inside the vehicle is controlled to collect the vibration noise at the different preset positions in the current driving state in real time, and the audio collection module pre-set at the gap of each compartment is controlled to collect the audio noise at the gap of the compartment.

[0089] In an embodiment, the first position information where the first noise is generated is determined, including:

[0090] According to the second position information corresponding to each vibration detection module and / or each audio collection module collecting the first noise, the first position information where the first noise is generated is obtained.

[0091] In addition, the application further provides a computer readable storage medium, which stores a computer program, the computer program includes program instructions, and the processor executes the program instructions to realize the steps of the vehicle interior noise reduction method provided by each embodiment of the application.

[0092] Those skilled in the art can understand that all or some of the steps in the methods disclosed above, the functional modules / units in the systems and devices can be implemented by software, firmware, hardware, or a combination thereof. In hardware embodiments, the division between the functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component can have multiple functions, or one function or step can be performed by several physical components in cooperation. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on computer-readable media, which can include computer storage media (or non-transitory media) and communication media (or transitory media). As is well known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. In addition, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and can include any information delivery media.

[0093] It should be understood that the term "and / or" as used herein refers to any combination of associated listed items, and all possible combinations, and includes these combinations. It should be noted that the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles or systems including a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles or systems. Without more limitations, the element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article or system including the element.

[0094] The above-mentioned serial numbers of the embodiments of the application are only for description, and do not represent the advantages and disadvantages of the embodiments. The above is only a specific embodiment of the application, but the protection scope of the application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the application, and these modifications or replacements should be covered in the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A method of reducing noise in a vehicle interior, characterized by, The method comprises: collecting a first noise in a vehicle interior, determining first noise characteristic information of the first noise and first position information of the first noise; obtaining second audio characteristic information corresponding to the first noise characteristic information and the first position information according to a pre-stored corresponding relationship between second noise characteristic information, each preset position information and second audio characteristic information, taking the second audio characteristic information as first audio characteristic information of the first noise reaching each preset position; wherein the second noise is vibration noise or audio noise entering a vehicle compartment gap, the vibration noise being generated at a preset position in the vehicle compartment under different driving states of the vehicle, the audio noise being generated at the preset position in the vehicle compartment, a mapping relationship between the second noise and corresponding second audio characteristic information is established by recording second audio characteristic information generated when the vibration noise reaches different seating positions or by recording second audio characteristic information generated when the audio noise entering the vehicle compartment reaches different seating positions; controlling directional audio playback devices at each of the first positions to generate second audio having a phase opposite to that of the corresponding first noise according to the first audio characteristic information of each of the preset positions, the second audio having the first audio characteristic information.

2. The vehicle interior noise reduction method of claim 1, wherein The first noise characteristic information comprises first vibration amplitude information and / or a first audio decibel value.

3. The vehicle interior noise reduction method of claim 1, wherein Before comparing the first noise with the pre-simulated second noise, the method further comprises: simulating the second noise generated at different positions in the vehicle interior and / or at the vehicle compartment gap under various preset driving conditions of the vehicle; determining the second audio characteristic information of the second noise transmitted to each of the preset positions; extracting second noise characteristic information of the second noise and establishing a corresponding relationship between the second noise characteristic information, each preset position information and second audio characteristic information.

4. The vehicle interior noise reduction method of claim 3, wherein The second noise comprises second vibration amplitude information and / or a second audio decibel value; the second audio characteristic information comprises an audio decibel value, an audio frequency and / or an audio attenuation value; The determination of the second audio characteristic information of the second noise transmitted to each of the preset positions comprises: in the case that the second noise comprises the second vibration amplitude information, determining an audio decibel value and / or an audio frequency transmitted to each of the preset positions from the second vibration amplitude information; in the case that the second noise comprises the second audio decibel value, determining an audio attenuation value transmitted to each of the preset positions from the second audio decibel value.

5. The vehicle interior noise reduction method of claim 1, wherein The first noise comprises vibration noise and / or audio noise.

6. The vehicle interior noise reduction method of claim 1, wherein The collection of the first noise in the vehicle interior comprises: controlling vibration detection modules pre-set at different preset positions in the vehicle interior to collect vibration noise at the different preset positions in a current driving state in real time, and controlling audio collection modules pre-set at each vehicle compartment gap to collect audio noise at the vehicle compartment gap in real time.

7. The vehicle interior noise reduction method of claim 6, wherein The determination of the first position information of the first noise comprises: According to the second position information corresponding to each vibration detection module and / or each audio collection module collecting the first noise, the first position information generated by the first noise is obtained.

8. A vehicle characterized by comprising: The device comprises a processor, a memory, a computer program stored on the memory and executable by the processor, and a data bus for realizing connection communication between the processor and the memory, wherein the computer program is executed by the processor to realize the steps of the vehicle interior noise reduction method according to any one of claims 1 to 7.

9. A storage medium for computer-readable storage, characterized in that, The storage medium stores one or more programs, and the one or more programs are executable by one or more processors to realize the steps of the vehicle interior noise reduction method according to any one of claims 1 to 7.

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