CN117636832A - Vehicle interior noise reduction method, vehicle and storage medium - Google Patents
Vehicle interior noise reduction method, vehicle and storage medium Download PDFInfo
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Abstract
The embodiment of the invention provides a method, equipment and storage medium for reducing noise in a vehicle, wherein the method comprises the following steps: collecting first noise in a vehicle, and determining first noise characteristic information of the first noise and first position information for generating the first noise; determining 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 respectively controlling the directional audio playing equipment at each first position to generate second audio with opposite phases to 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 vehicle interior noise is reduced and the riding experience effect is improved on the premise that a sound insulation material and a damping device are not required to be added.
Description
Technical Field
The present invention relates to the field of noise processing technologies, and in particular, to a method for reducing noise in a vehicle, and a storage medium.
Background
The noise in the vehicle mainly comes from two approaches, namely air vibration in the vehicle caused by vibration of the vehicle body of the vehicle and noise outside the vehicle is transmitted into the vehicle through a place where the vehicle is not tightly sealed. Currently, in order to reduce noise in the interior of a vehicle, it is common practice to add a sound insulating material to the interior of the vehicle and install vibration damping devices. However, the above means not only can increase the cost of the vehicle, but also can cause the aging of the sound insulation material and the falling-off of the vibration reduction device with the increase of the service life of the vehicle, so that the sound insulation effect is reduced and the vibration is aggravated. Therefore, how to reduce noise in the vehicle interior is still a technical problem to be solved.
Disclosure of Invention
The invention provides a noise reduction method in a vehicle, the vehicle and a storage medium, wherein first noise characteristic information corresponding to first noise in the vehicle and first position information for generating the first noise are combined to determine first audio characteristic information of the first noise reaching each preset position, and directional audio playing equipment at each preset position is further controlled 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, so that the noise in the vehicle is reduced and the riding experience effect is improved on the premise that sound insulation materials and damping devices are not required to be added.
In a first aspect, an embodiment of the present invention provides a vehicle interior noise reduction processing method, including:
collecting first noise in a vehicle, wherein the first noise comprises first noise characteristic information and first position information generated by the first noise;
determining 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 respectively controlling the directional audio playing equipment at each first position to generate second audio with the opposite phase 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.
In a second aspect, an embodiment of the present invention provides a vehicle, the vehicle including a processor, a memory, a computer program stored on the memory and executable by the processor, and a data bus for enabling a connection communication between the processor and the memory, wherein the computer program, when executed by the processor, implements the steps of the vehicle interior noise reduction processing method as described in the first aspect above.
In a third aspect, an embodiment of the present invention provides a storage medium for computer-readable storage, the storage medium storing one or more programs executable by one or more processors to implement the steps of the vehicle interior noise reduction processing method as described in the first aspect above.
The embodiment of the invention provides a vehicle interior noise reduction processing method, a vehicle and a storage medium; then, according to the first noise characteristic information and the first position information, determining first audio characteristic information that the first noise reaches each preset position; and finally, respectively controlling the directional audio playing equipment at each preset position to generate second audio with opposite phase to 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 method comprises the steps of determining first audio characteristic information of the first noise reaching each preset position by combining first noise characteristic information corresponding to the first noise in the vehicle and first position information for generating the first noise, and controlling directional audio playing equipment at each preset position to generate second audio with opposite phase to the corresponding first noise and 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, and reduce the noise in the vehicle under the condition that sound insulation materials and damping devices are not required to be added.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a scenario in which embodiments of the present invention are applicable;
fig. 2 is a schematic block diagram of a vehicle interior noise reduction processing device provided by an embodiment of the present invention;
FIG. 3 is a flow chart illustrating an implementation of a method for noise reduction in a vehicle according to an embodiment of the present invention;
FIG. 4 is a flowchart of a method for reducing noise in a vehicle interior according to another embodiment of the present invention;
fig. 5 is a schematic block diagram of a vehicle interior noise reduction system provided by an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The flow diagrams depicted in the figures are merely illustrative and not necessarily all of the elements and operations/steps are included or performed in the order described. For example, some operations/steps may be further divided, combined, or partially combined, so that the order of actual execution may be changed according to actual situations.
It is to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The embodiment of the invention provides a noise reduction method in a vehicle, the vehicle and a storage medium, which are characterized in that first noise characteristic information corresponding to first noise in the vehicle and first position information for generating the first noise are combined to determine first audio characteristic information of the first noise reaching each preset position, and directional audio playing equipment at each preset position is further controlled to generate second audio with opposite phase to the corresponding first noise according to the first audio characteristic information of the first noise reaching each preset position, so that the first noise at each preset position is eliminated, and the purpose of reducing the noise in the vehicle is achieved on the premise that sound insulation materials and damping devices are not required to be added.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.
Referring to fig. 1, fig. 1 is a schematic block diagram of a scenario in which an embodiment of the present invention is applicable.
As shown in fig. 1, the method for reducing noise in a vehicle according to the embodiment of the present invention is applicable to a vehicle 10.
As can be seen from fig. 1, the vehicle 10 provided in the present embodiment is a bus. It should be appreciated that in actual practice, the vehicle 10 may be a household car, van, taxi, or the like of various types. Specifically, in the present embodiment, the vehicle 10 is not particularly limited, and may be various vehicles on which a user sits.
Wherein a plurality of seats 102, predetermined key positions where vibrations are likely to occur or noise is generated, are provided inside the vehicle 10; the key positions are not specifically shown in fig. 1, and may be a chassis, a seat, a window, a door, or the like. Specifically, when the vehicle 10 is traveling in different modes, such as an acceleration or deceleration mode, vibrations of the vehicle body may be caused due to road surfaces or other objective causes, and vibrations of different magnitudes are generated at predetermined key positions, and these vibrations are transmitted to the seats 102 in the vehicle cabin at different frequencies, and noise is generated at corresponding seating positions of the seats 102, affecting the user's experience. Or when the vehicle 10 is traveling in different modes, external noise enters the interior of the vehicle cabin in windows, air conditioner ventilation holes or door gaps, and when the noise is transmitted to the corresponding riding position of each seat 102, the experience effect of the user is also affected.
In order to solve the above technical problems, the present invention is to eliminate the first noise reaching each preset position by disposing the noise reducer 106 inside the vehicle 10 without adopting noise reducing materials and adding vibration reducing devices, thereby improving the user experience effect and reducing the noise reducing cost of the vehicle. It should be noted that the vehicle interior noise reduction device 106 may be an integrated hardware module or a software program, and the corresponding hardware module or software program may be controlled by the processor of the vehicle 10 to implement the corresponding function, and in particular, refer to the schematic vehicle structure shown in fig. 5. The vehicle interior noise reduction device 106 may be displayed as an integrated hardware module or a software program in the form of a functional module and may be provided at any position in the interior or on the vehicle cabin of the vehicle 10, as shown in fig. 1 by way of example, in the present embodiment, the vehicle interior noise reduction device 106 is provided on a box near the vehicle tail.
The vehicle 10 may be connected to a background server network, and the background server may control updating of the noise information and the noise characteristic information pre-stored in the vehicle 10 in real time.
Specifically, as shown in fig. 2, the vehicle interior noise reduction device 106 includes an acquisition module 1061, a determination module 1062, and a control module 1063. The acquisition module 1061 includes an audio acquisition module 1064 and a vibration detection module 1066 disposed at each key location, and configured to acquire a first noise of the vehicle 10 in a corresponding driving state, and determine first noise characteristic information of the first noise and first location information for generating the first noise; further, the audio collection module 1062 or the vibration detection module 1064 sends the collected first noise to the determination module 1062, where the determination module 1062 determines, according to the first noise characteristic information and the first position information, first audio characteristic information that the first noise reaches each preset position; the control module 1063 controls the directional audio playing device at each preset position to generate a second audio with a phase opposite to that of the corresponding first noise according to the first audio characteristic information of each preset position, where the second audio has the first audio characteristic information of the first noise to eliminate the first noise at each preset position.
It should be noted that the embodiments described above are merely illustrative, and the modules described as separate components may or may not be physically separate, and components shown as modules may or may not be physical modules, i.e., may be located in one place, or may be distributed over multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, the device provided by the invention is deployed in a vehicle, and the connection relationship between the modules represents that the modules are in communication connection, and can be specifically realized as one or more communication buses or signal lines.
Next, each step of the vehicle interior noise reduction method provided by the embodiment of the invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 3, fig. 3 is a flowchart illustrating an implementation of a method for reducing noise in a vehicle according to an embodiment of the invention. The vehicle interior noise reduction method may be implemented by the vehicle execution shown in fig. 1.
As shown in fig. 3, the vehicle interior noise reduction method includes steps S301 to S303. The details are as follows:
s301, collecting first noise in a vehicle, and determining first noise characteristic information of the first noise and first position information for generating the first noise.
The first noise of the vehicle in the current running state may be collected, and specifically, the current running state may be different running states such as acceleration running, deceleration running, or uniform running. The first noise of the vehicle traveling within the preset time period may also be collected. Specifically, during the running process of the vehicle, on one hand, the vehicle may vibrate, and when the vibration propagates to the sitting position of the user in the carriage, noise is generated, so that the sitting experience of the user is affected; on the other hand, noise from the outside of the vehicle may enter the interior of the vehicle cabin through a cabin gap such as a window, door, or air flow hole, and affect the riding experience of the user. According to the embodiment, the vibration detection module is installed at the preset position where vibration is easy to generate, whether vibration occurs at each preset position is collected in real time through controlling the vibration detection module, the audio collection module is installed at the gap position of the carriage, and noise entering the carriage is collected in real time through controlling the audio collection module, so that first noise inside the vehicle is obtained. 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.
Specifically, the collecting the first noise inside the vehicle includes: controlling vibration detection modules preset at different preset positions in the vehicle, and collecting vibration noise at the different preset positions in the vehicle in real time or periodically at preset periods; and controlling an audio acquisition module preset at each carriage gap to periodically acquire audio noise at the carriage gap in real time or in a preset period.
The vibration detection module can be a vibration measurement sensor, and the audio acquisition module can be various existing audio acquisition devices.
In particular implementations, the first noise characteristic information includes first vibration amplitude information, and/or a first audio decibel value.
It should be understood that the present embodiment is given by way of example only and does not constitute a limitation of the first noise characteristic information, and in other embodiments of the present invention, the first noise characteristic information may further include at least one of vibration frequency information, vibration energy information, audio frequency information, or audio energy information.
In addition, in the present embodiment, the position information corresponding to the vibration detection module or the audio acquisition module is taken as the first position information of the first noise. Specifically, the determining the first location information that generates the first noise includes: and obtaining the first position information generated by the first noise according to the second position information corresponding to each vibration detection module for acquiring the first noise and/or each audio acquisition module.
S302, according to the first noise characteristic information and the first position information, first audio characteristic information that the first noise reaches each preset position is determined.
In an embodiment, determining audio characteristic information of the first noise reaching each preset position according to the first noise characteristic information and first position information for generating the first noise includes: and determining second noise characteristic information matched with the first noise characteristic information and the first position information and second audio characteristic information corresponding to the preset position information according to the pre-stored second noise characteristic information and the corresponding relation between each preset position information and the second audio characteristic information, and taking the second audio characteristic information as the audio characteristic information of the first noise reaching each preset position.
Specifically, the first noise characteristic information and the first position information may be respectively compared with the pre-stored noise characteristic information and the pre-stored position information to obtain second noise matched with the first noise; acquiring second noise characteristic information corresponding to the second noise and second audio characteristic information reaching each preset position, wherein the acquired second audio characteristic information corresponds to the first noise characteristic information and the first audio characteristic information corresponding to the first position information, namely the first audio characteristic information of the first noise reaching each preset position.
In this embodiment, by recording second audio characteristic information such as audio db values and/or audio frequencies generated when the vibration noise reaches different seating positions, or by recording second audio characteristic information such as audio attenuation values when the vibration noise reaches different seating positions, the association mapping relationship between the second noise and the corresponding second audio characteristic information is further established, so that after the first noise is acquired and the first noise is matched, the first audio characteristic information corresponding to the first noise is obtained through the second audio characteristic information corresponding to the second noise matched with the first noise, thereby eliminating the first noise at each preset position according to the first audio characteristic information.
For example, in an embodiment, the first noise is vibration noise, and correspondingly, determining, according to the first noise characteristic information and the first position information, first audio characteristic information that the first noise reaches each preset position includes:
and matching the first position information of the generated first noise with the second position information of each second noise, determining each second noise in the first position information corresponding to the first noise, matching the first vibration amplitude information of the first noise with the second vibration amplitude information of each second noise corresponding to the first position information, if the second amplitude information of the second noise is matched with the first amplitude information, determining that the second noise is matched with the first noise, acquiring the audio decibel value transmitted to each preset position by the second noise, and/or taking the audio frequency as the first audio characteristic information corresponding to the first noise reaching each preset position.
In another embodiment, the first noise is audio noise, and correspondingly, determining, according to the first noise characteristic information and the first position information, first audio characteristic information that the first noise reaches each preset position includes:
and matching the first position information of the generated first noise with the second position information of each second noise, determining each second noise at the first position information corresponding to the pre-stored first noise, matching the first audio decibel value of the first noise with the second audio decibel value of each second noise corresponding to the pre-stored first position information, if the second audio decibel value of the second noise is matched with the first audio decibel value, determining that the second noise is matched with the first noise, acquiring the audio attenuation value transmitted to each preset position by the second noise, and taking the audio attenuation value as the first audio characteristic information corresponding to the first noise reaching each preset position.
S303, respectively controlling the directional audio playing equipment at each first position to generate second audio with opposite phases 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.
In the implementation, the directional audio playing devices can be installed in advance at the positions which are easy to vibrate in the vehicle or near the positions which are easy to vibrate (within the range of a preset radius), the directions of the directional audio playing devices are respectively directed to preset riding positions, for example, the vehicle is an automobile comprising 5 seats, 5 small directional audio playing devices are respectively installed at each position which is easy to vibrate, and the 5 small directional audio playing devices are respectively directed to 5 seats and are used for generating directional audio and eliminating noise of different riding positions.
When the vehicle detects vibration noise in the driving process, the vibration noise is compared with vibration noise in a preset database, the method comprises the steps of generating position comparison and vibration amplitude comparison, when the vibration noise is consistent with the vibration noise, obtaining audio characteristic information generated when the vibration noise reaches different riding positions, controlling directional audio playing equipment at the position where the vibration noise is generated to output directional sounds according to the audio characteristic information, and respectively pointing to the preset positions, wherein the directional sounds output by the audio playing equipment are consistent with the sound caused by the vibration noise as noise reduction sounds, but are 180 degrees different in phase. The vibration noise and the noise reduction sound are mutually counteracted at each preset position, so that the noise generated by the vibration noise in the carriage is eliminated, the influence on a user is eliminated, and the riding effect of the user is improved.
In addition, a sound collection module is added at the positions where the air flows between the gaps of the carriage and the outside of the vehicle, such as an air conditioner air inlet hole, a vehicle door or a vehicle window, and the like, so as to collect the physical parameters of the audio noise such as corresponding sound signals in the carriage when the outside enters and exits, wherein the physical parameters comprise audio decibel values or frequencies, and the audio attenuation values when the outside audio propagates to different riding positions through different gaps are simulated in a laboratory in advance, and the active noise reduction is carried out on the audio noise transmitted into the carriage according to the audio attenuation values. Specifically, through the audio playing system preset at each gap position in the carriage, noise reduction audio signals with the same decibel value as that of the noise reduction audio signals entering the carriage and 180 degrees phase difference can be generated, so that the audio noise entering the carriage and the noise reduction audio signals can be mutually offset in the process of reaching different preset positions, and a driver and a passenger sitting at each preset position can not hear the audio noise transmitted from the outside.
In the implementation, the directional audio playing devices can be installed in advance at each gap of the carriage or in the preset radius range of each gap, such as the preset radius range of a car window, a car door or other air flowing holes, the directions of the directional audio playing devices are respectively directed to preset riding positions, for example, the car is an automobile comprising 5 seats, 5 small directional audio playing devices are respectively installed in the corresponding preset radius range of each gap, and the 5 small directional audio playing devices are respectively directed to 5 seats and are used for generating directional audio to eliminate noise of different riding positions.
In addition, it should be understood that, in the implementation process, if the detected vibration noise does not have the matched second noise in the database, the vibration noise is transmitted to the background server, so that the background server simulates the vibration noise through a preset noise simulation model, and simulates and obtains noise characteristic information generated when the vibration noise reaches different riding positions, and controls each corresponding directional audio playing device to generate corresponding noise elimination audio based on the noise characteristic information, and can store the vibration noise and the corresponding noise characteristic information into a corresponding database of the vehicle, so as to dynamically update the database of the vehicle.
As can be seen from the above analysis, the method for reducing noise in a vehicle according to the embodiment of the present invention includes the steps of first acquiring first noise in the vehicle, and determining first noise characteristic information of the first noise and first position information for generating the first noise; then, according to the first noise characteristic information and the first position information, determining first audio characteristic information that the first noise reaches each preset position; and finally, respectively controlling the directional audio playing equipment 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 method comprises the steps of determining first audio characteristic information of the first noise reaching each preset position by combining first noise characteristic information corresponding to the first noise in a vehicle and first position information for generating the first noise, and controlling directional audio playing equipment at each preset position to generate second audio with opposite phase to the corresponding first noise according to the first audio characteristic information of the first noise reaching each preset position, wherein the second audio is provided with the first audio characteristic information and is used for eliminating the first noise at each preset position, and the purpose of reducing the noise in the vehicle is achieved without adding sound insulation materials and damping devices.
Referring to fig. 4, fig. 4 is a flowchart illustrating an implementation of a method for reducing noise in a vehicle according to another embodiment of the invention. As shown in fig. 3, the specific implementation processes of S401 and S301, and S405 to S406 and S302 to S303 are the same as those of the embodiment shown in fig. 3, except that S402 and S404 are further included before S404, where S402 and S401 are in parallel execution relationship, and may be alternatively executed. The details are as follows:
s401, collecting first noise in a vehicle, and determining first noise characteristic information of the first noise and first position information for generating the first noise.
S402, simulating the second noise generated by different positions inside the vehicle and/or by the gaps of the carriage under various preset running modes of the vehicle.
S403, determining that the second noise is transmitted to the second audio characteristic information at each preset position.
Wherein the second noise comprises second vibration amplitude information and/or a second audio decibel value; the second audio characteristic information includes an audio decibel value, an audio frequency, or an audio attenuation value;
in an embodiment, the determining that the second noise is transmitted to the second audio characteristic information at the preset positions includes: if the second noise is the second vibration amplitude information, determining an audio decibel value and/or an audio frequency of the second vibration amplitude information transmitted to each preset position; and if the second noise is the second audio decibel value, determining that the second audio decibel value is transmitted to the audio attenuation value at each preset position.
S404, extracting second noise characteristic information of the second noise, and establishing a corresponding relation among the second noise characteristic information, each piece of preset position information and second audio characteristic information.
S405, determining second noise characteristic information matched with the first noise characteristic information and the first position information and second audio characteristic information corresponding to preset position information according to the corresponding relation, and taking the second audio characteristic information as the audio characteristic information of the first noise reaching each preset position.
S406, respectively controlling the directional audio playing equipment at each first position to generate second audio with opposite phase 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.
As can be seen from the above analysis, the method for reducing noise in a vehicle according to the embodiment of the present invention includes the steps of first acquiring first noise in the vehicle, and determining first noise characteristic information of the first noise and first position information for generating the first noise; then, according to the first noise characteristic information and the first position information, determining first audio characteristic information that the first noise reaches each preset position; and finally, respectively controlling the directional audio playing equipment 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 method comprises the steps of determining first audio characteristic information of the first noise reaching each preset position by combining first noise characteristic information corresponding to the first noise in the vehicle and first position information for generating the first noise, and controlling directional audio playing equipment at each preset position to generate second audio with opposite phase to the corresponding 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, and reduce the noise in the vehicle under the condition of not adding sound insulation materials and damping devices.
Referring to fig. 5, fig. 5 is a schematic block diagram of a noise reduction system in a vehicle according to an embodiment of the invention.
As shown in fig. 5, the vehicle interior noise reduction system 500 includes a processor 501, a memory 502, a communication interface 503, and a bus 504. The processor 501, the memory 502, and the communication interface 503 communicate via the bus 504, or may communicate via other means such as wireless transmission. The memory 502 stores executable program codes, and the processor 501 may call the program codes stored in the memory 502 to execute the vehicle interior noise reduction method in the foregoing method embodiment. That is, the above-described vehicle interior noise reduction method shown in fig. 3 or 4 may be implemented by the in-vehicle processor 501 shown in fig. 5 invoking the program code stored in the memory 502 for execution.
It should be appreciated that in embodiments of the present invention, the processor 501 may be a central processing unit CPU, the processor 501 may also be other general purpose processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits (application specific integrated circuit, ASIC), field programmable gate arrays (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or any conventional processor or the like.
The memory 502 may include read only memory and random access memory and provide instructions and data to the processor 501. Memory 502 may also include non-volatile random access memory. For example, the memory 502 may also store data sets.
The memory 502 may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and direct memory bus RAM (DR RAM).
The bus 504 may include a power bus, a control bus, a status signal bus, and the like in addition to a data bus. But for clarity of illustration, the various buses are labeled as bus 504 in the figures.
It should be understood that the vehicle interior noise reduction system 500 according to the embodiment of the present invention corresponds to a corresponding body in performing the methods shown in fig. 3 to 4 according to the embodiment of the present invention, and is not described herein for brevity. Illustratively, a computer program stored on the memory 502 and executable by the processor 501 in the vehicle interior noise reduction system 500, when executed by the processor 501, performs the steps of:
collecting first noise in a vehicle, and determining first noise characteristic information of the first noise and first position information for generating the first noise;
determining 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 respectively controlling the directional audio playing equipment at each first position to generate second audio with opposite phases 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.
In an embodiment, the determining, according to the first noise characteristic information and the first position information, first audio characteristic information that the first noise reaches each preset position includes:
and acquiring the first noise characteristic information and the first audio characteristic information corresponding to the first position information according to the corresponding relation between the pre-stored noise characteristic information, the position information and the audio characteristic information.
In an embodiment, the first noise characteristic information comprises first vibration amplitude information, and/or a first audio decibel value.
In an embodiment, before said comparing the first noise with the second noise simulated in advance, the method further comprises:
simulating the second noise generated by different positions in the vehicle and/or by the gaps of the carriage under various preset running modes of the vehicle;
determining the second audio characteristic information transmitted to each preset position by the second noise;
and extracting second noise characteristic information of the second noise, and establishing a corresponding relation among the second noise characteristic information, each piece of preset position information and second audio characteristic information.
In an embodiment, the second noise includes second vibration amplitude information, and/or a second audio decibel value; the second audio characteristic information includes audio decibel values, audio frequencies, and/or audio attenuation values;
the determining that the second noise is transmitted to the second audio characteristic information at each preset position includes:
if the second noise is the second vibration amplitude information, determining an audio decibel value and/or an audio frequency of the second vibration amplitude information transmitted to each preset position;
and if the second noise is the second audio decibel value, determining that the second audio decibel value is transmitted to the audio attenuation value at each preset position.
In an embodiment, the first noise comprises vibration noise, and/or audio noise.
In an embodiment, the collecting the first noise inside the vehicle includes:
controlling vibration detection modules preset at different preset positions in a vehicle, and collecting vibration noise at the different preset positions in a current running state in real time; and controlling an audio acquisition module preset at each carriage gap to acquire audio noise at the carriage gap in real time.
In an embodiment, the determining the first location information that generated the first noise includes:
and obtaining the first position information generated by the first noise according to the second position information corresponding to each vibration detection module for acquiring the first noise and/or each audio acquisition module.
In addition, the invention also provides a computer readable storage medium, the computer readable storage medium stores a computer program, the computer program includes program instructions, and the processor executes the program instructions to implement the steps of the vehicle interior noise reduction method provided by the embodiments of the invention.
Those of ordinary skill in the art will appreciate that all or some of the steps, systems, functional modules/units in the apparatus, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware embodiment, 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 may have multiple functions, or one function or step may be performed cooperatively by several physical components. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, 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, as known to those skilled in the art. 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 tape, 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. Furthermore, as is well known to those of ordinary skill in the art, 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 includes any information delivery media.
It should be understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations. It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments. While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (10)
1. A method of reducing noise in a vehicle interior, the method comprising:
collecting first noise in a vehicle, and determining first noise characteristic information of the first noise and first position information for generating the first noise;
determining 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 respectively controlling the directional audio playing equipment at each first position to generate second audio with opposite phases 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.
2. The vehicle interior noise reduction method according to claim 1, wherein the determining first audio characteristic information of the first noise reaching each preset position based on the first noise characteristic information and the first position information includes:
and acquiring second noise characteristic information matched with the first noise characteristic information and the first position information and second audio characteristic information corresponding to the preset position information according to the pre-stored second noise characteristic information and the corresponding relation between each preset position information and the second audio characteristic information, and taking the second audio characteristic information as the first audio characteristic information of the first noise reaching each preset position.
3. The vehicle interior noise reduction method according to claim 2, wherein the first noise characteristic information includes first vibration amplitude information, and/or a first audio decibel value.
4. The vehicle interior noise reduction method according to claim 2, characterized by further comprising, before said comparing the first noise with a second noise simulated in advance:
simulating the second noise generated by different positions in the vehicle and/or by the gaps of the carriage under various preset running modes of the vehicle;
determining the second audio characteristic information transmitted to each preset position by the second noise;
and extracting second noise characteristic information of the second noise, and establishing a corresponding relation among the second noise characteristic information, each piece of preset position information and second audio characteristic information.
5. The vehicle interior noise reduction method according to claim 4, wherein the second noise includes second vibration amplitude information, and/or a second audio decibel value; the second audio characteristic information includes an audio decibel value, an audio frequency, and/or an audio attenuation value;
the determining that the second noise is transmitted to the second audio characteristic information at each preset position includes:
determining an audio decibel value and/or an audio frequency of the second vibration amplitude information transmitted to each preset position under the condition that the second noise comprises the second vibration amplitude information;
and determining an audio attenuation value at which the second audio decibel value is transmitted to each preset position in the case that the second noise comprises the second audio decibel value.
6. The vehicle interior noise reduction method according to claim 1, wherein the first noise includes vibration noise, and/or audio noise.
7. The vehicle interior noise reduction method according to claim 1, wherein the collecting the first noise of the vehicle interior includes:
controlling vibration detection modules preset at different preset positions in a vehicle, and collecting vibration noise at the different preset positions in a current running state in real time; and controlling an audio acquisition module preset at each carriage gap to acquire audio noise at the carriage gap in real time.
8. The vehicle interior noise reduction method according to claim 7, wherein the determining first position information that generates the first noise includes:
and obtaining the first position information generated by the first noise according to the second position information corresponding to each vibration detection module for acquiring the first noise and/or each audio acquisition module.
9. A vehicle, characterized in that the device comprises a processor, a memory, a computer program stored on the memory and executable by the processor, and a data bus for enabling a connection communication between the processor and the memory, wherein the computer program, when being executed by the processor, implements the steps of the vehicle interior noise reduction method according to any one of claims 1 to 8.
10. A storage medium for computer-readable storage, wherein the storage medium stores one or more programs executable by one or more processors to implement the steps of the vehicle interior noise reduction method of any of claims 1-8.
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