Vehicle acoustic warning sound playing method and device, equipment and medium

Abstract

The invention provides a vehicle acoustic warning sound playing method, device and equipment and a medium, and belongs to the technical field of intelligent driving, and the method comprises the steps: obtaining an original sound source of a warning sound currently applied by a vehicle; establishing a multi-dimensional attribute mapping relation between the vehicle dynamic parameters and the original sound source; and obtaining dynamic parameters of a current vehicle in real time, and performing multi-dimensional adjustment on the original sound source in combination with the multi-dimensional attribute mapping relation to generate an audio stream for playing. Through the technical scheme in the embodiment of the invention, the warning sound can be dynamically adjusted in real time and played, so that the perception of pedestrians to vehicles is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent driving, and in particular to a vehicle acoustic warning sound playing method, device, equipment and medium. BACKGROUND

[0002] The vehicle acoustic warning system (AVAS, Acoustic Vehicle Alerting System) is mainly used for electric / hybrid vehicles and is a safety device for electric vehicles when driving at low speed. It reminds pedestrians of the existence of the vehicle through sound. Because the noise of such vehicles is extremely low when driving at low speed, pedestrians (especially the visually impaired) have difficulty in timely detection. AVAS improves vehicle detectability and reduces traffic accident risk by emitting simulated engine sound or customized sound effects.

[0003] At present, the sound source in the AVAS is too rigid, and when facing more complex scenes, the warning sound played is difficult to produce more effective effects.

[0004] Therefore, it is urgent to propose a new vehicle acoustic warning sound playing scheme. SUMMARY

[0005] The present application aims to solve at least one of the technical problems existing in the prior art and provides a vehicle acoustic warning sound playing method, device, equipment and medium.

[0006] In a first aspect, the embodiments of the present application provide a vehicle acoustic warning sound playing method, comprising:

[0007] Obtaining an original sound source of a warning sound currently applied by a vehicle;

[0008] Establishing a multi-dimensional attribute mapping relationship between vehicle dynamic parameters and the original sound source;

[0009] Real-time acquisition of current vehicle dynamic parameters, and multi-dimensional adjustment of the original sound source in combination with the multi-dimensional attribute mapping relationship to generate an audio stream for playing.

[0010] In some embodiments, before obtaining the original sound source of the warning sound currently applied by the vehicle, the method further comprises:

[0011] Listening to and downloading different types of warning sounds, or accessing self-created warning sounds that have passed the audit;

[0012] Selecting a warning sound from the inherent warning sound of the vehicle, the warning sound listened to and downloaded, and the self-created warning sound for application.

[0013] In some embodiments, the establishment of the multi-dimensional attribute mapping relationship between the vehicle dynamic parameters and the original sound source comprises:

[0014] The original sound source is decomposed into sound particles with multiple attribute dimensions;

[0015] Map any of the vehicle dynamic parameters to any attribute dimension of the sound particle;

[0016] The parameter value of any of the vehicle dynamic parameters is mapped to the attribute value of the sound particle in the attribute dimension corresponding to the vehicle dynamic parameter.

[0017] A sound particle lookup table is constructed between the vehicle dynamic parameters and the original sound source using interpolation.

[0018] In some embodiments, the vehicle dynamic parameters include: speed parameters, gear parameters, and steering wheel parameters;

[0019] The attributes of the original sound source include: frequency attribute, volume attribute, and spatial orientation attribute.

[0020] In some embodiments, a mapping between the speed parameter and the frequency attribute is established;

[0021] The speed parameter and the frequency attribute satisfy a certain logarithmic mapping relationship, and the logarithmic mapping relationship is a positive feedback relationship.

[0022] In some embodiments, a mapping is established between the gear parameter and the volume attribute;

[0023] Furthermore, when the vehicle shifts into reverse gear, odd harmonics and low-frequency square wave pulses are superimposed.

[0024] Furthermore, even-order harmonics are superimposed when the vehicle shifts to forward gear.

[0025] In some embodiments, a mapping between the steering wheel parameters and the spatial orientation attribute is established;

[0026] Furthermore, when the vehicle is making a left turn, the amplifiers on the left side of the vehicle are allocated more power than those on the right side.

[0027] Furthermore, when the vehicle makes a right turn, the amplifiers on the right side of the vehicle are allocated more power than those on the left side.

[0028] Secondly, embodiments of the present invention provide a device for playing vehicle acoustic warning sounds, comprising:

[0029] The sound source acquisition module is used to acquire the original sound source of the warning sound currently being applied by the vehicle;

[0030] The attribute mapping module is used to establish a multi-dimensional attribute mapping relationship between vehicle dynamic parameters and the original sound source;

[0031] The audio playback module is used to acquire the current vehicle dynamic parameters in real time, and to perform multidimensional adjustment on the original sound source in combination with the multidimensional attribute mapping relationship to generate an audio stream for playback.

[0032] Thirdly, embodiments of the present invention provide an electronic device, the electronic device comprising:

[0033] At least one processor; and a memory communicatively connected to the at least one processor;

[0034] The memory stores a computer program that can be executed by at least one processor, such that the at least one processor is able to perform the steps of the method according to any embodiment of the present invention.

[0035] Fourthly, embodiments of the present invention provide a computer-readable storage medium storing computer instructions that, when executed by a processor, implement the steps of a method according to any embodiment of the present invention.

[0036] Compared with the prior art, the present invention has the following advantages:

[0037] The present invention provides a method for playing vehicle acoustic warning sounds. First, the original sound source of the warning sound currently applied by the vehicle is acquired. Then, a multi-dimensional attribute mapping relationship is established between the vehicle's dynamic parameters and the original sound source. Finally, the current vehicle dynamic parameters are acquired in real time, and the original sound source is adjusted in multiple dimensions based on the multi-dimensional attribute mapping relationship to generate an audio stream for playback. Through the technical solution of this invention, real-time adjustment of the warning sound is achieved, enhancing pedestrians' perception of vehicles. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only preferred embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 A flowchart illustrating a method for playing a vehicle acoustic warning sound according to an embodiment of the present invention;

[0040] Figure 2 This is a diagram illustrating the architecture of a vehicle acoustic warning sound playback system provided in an embodiment of the present invention.

[0041] Figure 3 A flowchart illustrating another method for playing vehicle acoustic warning sounds according to an embodiment of the present invention;

[0042] Figure 4This is a structural block diagram of a vehicle acoustic warning sound playback device provided in an embodiment of the present invention;

[0043] Figure 5 This is a structural block diagram of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] To enable those skilled in the art to better understand the technical solutions of the present invention, exemplary embodiments of the present invention are described below in conjunction with the accompanying drawings, including various details of the embodiments of the present invention to aid understanding. These should be considered merely exemplary. Therefore, those skilled in the art should recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0046] Where there is no conflict, the various embodiments of the present invention and the features thereof may be combined with each other.

[0047] As used herein, the term “and / or” includes any and all combinations of one or more related enumerated entries.

[0048] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein, the singular forms “a” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that when the terms “comprising” and / or “made of” are used in this specification, the presence of the stated feature, integral, step, operation, element, and / or component is specified, but the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof is not excluded. Terms such as “connected” or “linked” are not limited to physical or mechanical connections but can include electrical connections, whether direct or indirect.

[0049] Unless otherwise specified, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having the meaning consistent with their meaning in the context of the relevant art and the invention, and will not be interpreted as having an idealized or overly formal meaning unless expressly so defined herein.

[0050] In the technical solution of this invention, the collection, storage, use, processing, transmission, provision, and disclosure of user personal information all comply with relevant laws and regulations and do not violate public order and good morals. The use of user data in this technical solution follows relevant national laws and regulations (e.g., the "Information Security Technology - Personal Information Security Specification"). For example: appropriate measures are taken for personal information access control; restrictions are imposed on the display of personal information; the purpose of using personal information does not exceed the scope of direct or reasonable association; and explicit identity targeting is eliminated when using personal information to avoid precisely locating a specific individual.

[0051] Before introducing the technical solution in this application, it should be noted that the following are some solutions for playing vehicle acoustic warning sounds in related technologies:

[0052] Option 1: Listen to the audio source file stored on the mobile terminal and save the audio source file to AVAS to switch to the original audio source file. Although Option 1 expands the audio source of the warning sound and allows users to directly modify the warning sound, it increases the difficulty of the audio source pre-approval mechanism in relevant regulations. Moreover, Option 1 only expands the audio source without changing the limitations of the warning sound in complex scenarios.

[0053] Option 2: Construct an audio generation model based on the Mel spectrogram in the audio text, and generate AVAS audio files according to the user's preferred audio and the audio files output by the model. Although Option 2 can satisfy user preferences and allow for independent sound source creation, it consumes a lot of system resources during the sound source creation process, and Option 2 also cannot adjust the warning sound in real time.

[0054] In summary, existing solutions have expanded the ways to obtain warning sounds, no longer limited to the inherent sound sources provided by manufacturers. Sounds can be obtained from other devices or created according to user preferences. However, these solutions lack the ability to adapt to different environments and cannot autonomously adjust the warning sounds in different scenarios.

[0055] To address at least one of the technical problems existing in the aforementioned related technologies, the present invention provides a method for playing vehicle acoustic warning sounds. Figure 1 This is a flowchart illustrating a method for playing vehicle acoustic warning sounds according to an embodiment of the present invention. This method is particularly suitable for playing warning sounds in complex scenarios. The method can be executed by a vehicle acoustic warning sound playback device, which can be implemented in software and / or hardware and can be configured in an electronic device.

[0056] like Figure 1 As shown, the method specifically includes:

[0057] S1, obtain the original sound source of the warning sound currently applied to the vehicle.

[0058] It should be noted that the warning sounds used in this application and the adjustments made to the warning sounds comply with the frequency response and sound pressure standards stipulated in relevant regulations.

[0059] In some embodiments, before acquiring the original sound source of the warning sound currently applied to the vehicle, the method further includes:

[0060] Listen to and download different types of alert sounds, or access approved self-created alert sounds;

[0061] The warning sounds were selected and applied from the vehicle's built-in warning sounds, the warning sounds that were audited and downloaded, and the warning sounds that were created independently.

[0062] Figure 2 This is an architecture diagram of a vehicle acoustic warning sound playback system provided in an embodiment of the present invention, as shown below. Figure 2 As shown, the architecture includes at least the following methods for obtaining the original sound source of the warning sound: 1) Users can listen to the AVAS sound source stored in the cloud by logging into the user center, or users can create their own warning sound by logging into the user center and having it reviewed by the manufacturer, and then download the AVAS sound source stored in the cloud to the vehicle's AVAS module, and finally play the warning sound through the horn in combination with the vehicle's real-time speed, gear and steering wheel turning status; 2) Users can select the inherent AVAS sound source type in the vehicle's settings module, and set the original sound source of the corresponding warning sound in the vehicle's AVAS module, and finally play the warning sound through the horn in combination with the vehicle's real-time speed, gear and steering wheel turning status.

[0063] Based on the above warning sound playback system architecture, some modules in the system architecture will be explained again.

[0064] In the user center, users can log in to the cloud audio platform through biometrics or the digital cockpit account system. On the cloud audio platform, users can listen to different types of AVAS audio sources. The cloud audio platform integrates a variety of different AVAS audio source types and uses low bitrate audio streaming technology to support users to listen to AVAS audio effects in real time.

[0065] In the cloud, manufacturers place updated AVAS audio sources of various types on remote servers for users to download. Users can log in to the cloud via their in-vehicle infotainment system to preview audio, download AVAS audio sources according to their preferences, and configure the entire process in a scenario-based manner. Furthermore, the cloud-based audio platform supports user-created AVAS audio sources, manufacturer pre-approval, and secure access functions, enabling secure access to third-party audio sources.

[0066] The settings module stores various AVAS audio source types stored in the vehicle's infotainment system for the AVAS module to read.

[0067] In the AVAS module, based on AVAS audio sources downloaded from the user center or created independently, multi-dimensional playback adjustments are made in conjunction with the vehicle's speed, gear, and steering wheel position; or, based on AVAS audio sources stored in the settings module, multi-dimensional playback adjustments are made in conjunction with speed, gear, and steering wheel position.

[0068] In the above embodiments, users can download AVAS sound sources from the cloud sound effects ecosystem platform to meet the needs of young users for "customized sound effects". Users can also create AVAS sound sources and access them to the cloud, which can enhance user participation and experience, thereby increasing user stickiness and creating commercial value for the platform.

[0069] S2 establishes a multi-dimensional attribute mapping relationship between vehicle dynamic parameters and the original sound source.

[0070] It should be noted that vehicle dynamic parameters refer to various parameters that characterize the current driving state of a vehicle during operation.

[0071] In some embodiments, establishing a multi-dimensional attribute mapping relationship between vehicle dynamic parameters and the original sound source includes:

[0072] The original sound source is decomposed into sound particles with multiple attribute dimensions;

[0073] Map any vehicle dynamic parameter to any attribute dimension of a sound particle;

[0074] The parameter value of any vehicle dynamic parameter is mapped to the attribute value of the sound particle in the attribute dimension corresponding to that vehicle dynamic parameter.

[0075] A sound particle lookup table is constructed between vehicle dynamic parameters and the original sound source using interpolation.

[0076] It should be noted that the original sound source contains multiple dimensions of attributes, which are represented by the physical properties of audio particles.

[0077] In the above embodiments, by using a sound particle lookup table coupled with multi-dimensional dynamic parameters, multi-parameter joint optimization is achieved, breaking through the limitations of traditional AVAS fixed sound source and single parameter mapping, defining multi-dimensional interpolation rules for sound particles, and ensuring smooth transition of sound effects when parameters change continuously.

[0078] In some embodiments, vehicle dynamic parameters include: speed parameters, gear parameters, and steering wheel parameters, etc. The attributes of the original sound source include: frequency attributes, volume attributes, and spatial orientation attributes, etc.

[0079] In some embodiments, a mapping between velocity parameters and frequency attributes is established.

[0080] For example, in this embodiment, the speed parameter is used as one dimension of the vehicle dynamic parameters, and the frequency attribute is used as one dimension of the original sound source. When pedestrians perceive the frequency change of the warning sound, they can realize that a vehicle is moving and can realize the speed of the vehicle to a certain extent.

[0081] Furthermore, the speed parameter and the frequency attribute satisfy a certain logarithmic mapping relationship, and the logarithmic mapping relationship is a positive feedback relationship.

[0082] Understandably, the minimum allowed value of the speed parameter corresponds to the minimum allowed value of the frequency attribute, and the maximum allowed value of the speed parameter corresponds to the maximum allowed value of the frequency attribute. Furthermore, because the two satisfy a positive feedback logarithmic mapping, even at lower speeds, a rapid increase in frequency can attract pedestrian attention. At higher speeds, the frequency is maintained at a higher value, which both complies with the frequency standards stipulated by relevant regulations and serves as a prompt to pedestrians.

[0083] In some embodiments, a mapping is established between gear parameters and volume attributes.

[0084] For example, in this embodiment, the gear position parameter is used as one dimension of the vehicle dynamic parameters, and the volume attribute is used as one dimension of the original sound source. When pedestrians perceive the change in the volume of the warning sound, they can realize that a vehicle is moving and can realize to some extent that the vehicle is switching to reverse or forward gear.

[0085] Furthermore, when the vehicle shifts to reverse gear, odd harmonics and low-frequency square wave pulses are superimposed; when the vehicle shifts to forward gear, even harmonics are superimposed.

[0086] Understandably, the forward gear uses even-order harmonic clusters to enhance the warmth of the sound, while the reverse gear injects odd-order harmonics and low-frequency square wave pulses to improve the sharpness of the warning. When switching between forward and reverse gears, the sharpness of the warning is enhanced through the superposition of odd and even-order harmonics and waveform modulation. The use of odd and even-order harmonic superposition and waveform modulation, combined with tactile feedback, improves pedestrian perception efficiency.

[0087] In some embodiments, a mapping between steering wheel parameters and spatial orientation attributes is established.

[0088] For example, in this embodiment, the steering wheel steering parameter is used as one dimension of the vehicle dynamic parameters, and the spatial orientation attribute is used as one dimension of the original sound source. When pedestrians perceive the change in the spatial orientation of the warning sound, they can realize that a vehicle is moving and can realize to some extent that the vehicle is turning left or right.

[0089] Furthermore, when the vehicle is turning left, the amplifiers on the left side of the vehicle are allocated more power than those on the right side; when the vehicle is turning right, the amplifiers on the right side of the vehicle are allocated more power than those on the left side.

[0090] Understandably, steering wheel parameters enhance the directionality of sound sources by distributing sound energy based on the steering angle, thereby improving pedestrians' perception of the sound source's direction. By using steering wheel parameters to enhance the directionality of sound sources, pedestrians' perception of the sound source's direction is improved.

[0091] In conjunction with the above embodiments, the speed parameter uses logarithmic mapping to achieve speed gain linkage, ensuring a smooth low-speed and progressively increasing warning intensity at high speeds; the gear parameter superimposes even-order harmonic clusters to enhance the warmth of the sound when forward gears, and injects odd-order harmonics + low-frequency square wave pulses to improve the sharpness of the warning when reverse gears; the steering wheel parameter dynamically adjusts the energy distribution of the left and right channels according to the steering wheel angle to enhance pedestrians' sense of direction for the warning sound.

[0092] Figure 3 A flowchart illustrating another method for playing vehicle acoustic warning sounds provided in an embodiment of the present invention is shown below. Figure 3 As shown, in a specific implementation process, users first log in to the cloud through the user center to listen to and download AVAS audio sources. Then, the cloud performs functions such as AVAS audio source download, user upload, and manufacturer pre-approval. Next, the vehicle's infotainment system stores the AVAS audio sources downloaded from the cloud. Then, the user sets the type of AVAS audio source to be played. Then, the system reads the AVAS audio source based on the user's preset audio source as the audio source. Through a multi-parameter coupled sound particle lookup table algorithm, the vehicle's dynamic parameters are mapped to the physical properties of audio particles. Combined with a dynamic audio particle synthesis algorithm, a PCM audio stream is generated. Finally, the PCM audio stream is output to the external speakers of the vehicle.

[0093] In the specific implementation process described above, a multi-parameter coupled sound particle lookup table algorithm is used to map vehicle dynamic parameters into the physical properties of audio particles, achieving dynamic synthesis and spatial rendering of warning sound effects. The sound particle lookup table is a multi-dimensional parameter mapping matrix that transforms the multi-dimensional parameters of the vehicle input signal into multi-dimensional attributes of audio particles. Specifically, the speed parameter uses a dynamic compression model based on logarithmic curves to achieve volume gain and particle density; the gear parameters, such as forward and reverse, enhance warning sharpness through odd and even harmonic superposition and waveform modulation; and the steering wheel parameter enhances the directionality of the sound source through channel energy distribution based on the steering angle, thus improving pedestrians' perception of the sound source's direction.

[0094] Understandably, the multi-parameter coupled sound particle lookup table algorithm specifically normalizes the physical quantities of vehicle speed, gear, and steering angle, searches for particle parameters in a multidimensional table through an interpolation algorithm, and finally generates a PCM audio stream based on particle synthesis.

[0095] S3 acquires the current vehicle dynamic parameters in real time and combines them with multi-dimensional attribute mapping to perform multi-dimensional adjustments on the original sound source to generate an audio stream for playback.

[0096] Specifically, the dynamically generated multi-channel PCM audio stream is written into the PCM device node, transmitted to the digital signal processing unit (DSP), and then played through the vehicle's external speakers after being processed by the DSP.

[0097] The technical solution in this invention discloses a method for playing vehicle acoustic warning sounds, and based on this, proposes a system architecture for playing vehicle acoustic warning sounds. This system is based on a vehicle-cloud integrated architecture, allowing users to seamlessly access a cloud-based audio ecosystem platform through a digital cockpit account system, enabling personalized intelligent selection of warning sound sources. Simultaneously, based on intelligent acoustic interaction and real-time signal processing technology, the warning sound playback system integrates vehicle dynamic data (speed, steering wheel position, gear) and combines it with a dynamic audio particle synthesis algorithm to generate warning sound effects with adjustable frequency, rhythm, and spatial orientation. The system, based on a precise mapping of sound physical properties and particle parameters, overcomes the limitations of fixed-pitch warning sounds, achieving adaptive adjustment of frequency, volume, and sound effect directionality. While meeting regulatory frequency response and sound pressure standards, it provides pedestrians with an intelligent sound interaction solution that combines safety, recognizability, and auditory comfort.

[0098] Based on the same inventive concept, embodiments of the present invention also provide a device for playing vehicle acoustic warning sounds. Figure 4 This is a structural block diagram of a vehicle acoustic warning sound playback device provided in an embodiment of the present invention, as shown below. Figure 4 As shown, the device specifically includes:

[0099] The sound source acquisition module 100 is used to acquire the original sound source of the warning sound currently applied by the vehicle;

[0100] The attribute mapping module 200 is used to establish a multi-dimensional attribute mapping relationship between vehicle dynamic parameters and the original sound source;

[0101] The audio playback module 300 is used to acquire the current vehicle dynamic parameters in real time and combine the multi-dimensional attribute mapping relationship to perform multi-dimensional adjustment on the original sound source to generate an audio stream for playback.

[0102] Based on the same inventive concept, embodiments of the present invention also provide an electronic device. Figure 5 This is a structural block diagram of an electronic device provided in an embodiment of the present invention. Figure 5As shown, an embodiment of the present invention provides an electronic device including: one or more processors 101, a memory 102, and one or more I / O interfaces 103. The memory 102 stores one or more programs, which, when executed by the one or more processors, cause the one or more processors to implement a method for playing vehicle acoustic warning sounds as described in any of the above embodiments; the one or more I / O interfaces 103 are connected between the processor and the memory, configured to enable information interaction between the processor and the memory.

[0103] The processor 101 is a device with data processing capabilities, including but not limited to a central processing unit (CPU); the memory 102 is a device with data storage capabilities, including but not limited to random access memory (RAM, more specifically SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), and flash memory (FLASH); the I / O interface (read / write interface) 103 is connected between the processor 101 and the memory 102, and can realize information interaction between the processor 101 and the memory 102, including but not limited to a data bus (BUS).

[0104] In some embodiments, the processor 101, memory 102, and I / O interface 103 are interconnected via bus 104, and thus connected to other components of the computing device.

[0105] In some embodiments, the one or more processors 101 include a field-programmable gate array.

[0106] This invention also provides a computer-readable medium. The computer-readable medium stores a computer program, which, when executed by a processor, implements the steps in any of the vehicle acoustic warning sound playback methods described in the above embodiments. The computer-readable storage medium can be volatile or non-volatile.

[0107] This invention also provides a computer program product, including computer-readable code, or a non-volatile computer-readable storage medium carrying computer-readable code. When the computer-readable code is run in the processor of an electronic device, the processor in the electronic device executes the above-described method for playing vehicle acoustic warning sounds.

[0108] Those skilled in the art will understand that all or some of the steps, systems, and apparatuses disclosed above, and their functional modules / units, can be implemented as software, firmware, hardware, or suitable combinations thereof. In hardware implementations, the division between functional modules / units mentioned above does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all 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 (ASIC). Such software can be distributed on a computer-readable storage medium, which may include computer storage media (or non-transitory media) and communication media (or transient media).

[0109] As is known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information, such as computer-readable program instructions, data structures, program modules, or other data. Computer storage media includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), static random access memory (SRAM), flash memory or other memory technologies, portable compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, it is known to those skilled in the art that communication media typically contain computer-readable program instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0110] The computer-readable program instructions described herein can be downloaded from computer-readable storage media to various computing / processing devices, or downloaded via a network, such as the Internet, local area network, wide area network, and / or wireless network, to an external computer or external storage device. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. A network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards them to the computer-readable storage media in the respective computing / processing device.

[0111] The computer program instructions used to perform the operations of this invention may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Smalltalk, C++, etc., and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The computer-readable program instructions may be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or may be connected to an external computer (e.g., via the Internet using an Internet service provider). In some embodiments, electronic circuitry, such as programmable logic circuitry, field-programmable gate arrays (FPGAs), or programmable logic arrays (PLAs), is personalized by utilizing state information from the computer-readable program instructions. This electronic circuitry can execute the computer-readable program instructions to implement various aspects of the invention.

[0112] The computer program product described herein can be implemented specifically through hardware, software, or a combination thereof. In one alternative embodiment, the computer program product is specifically embodied in a computer storage medium; in another alternative embodiment, the computer program product is specifically embodied in a software product, such as a software development kit (SDK), etc.

[0113] Various aspects of the present invention are described herein with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-readable program instructions.

[0114] These computer-readable program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that, when executed by the processor of the computer or other programmable data processing apparatus, they create means for implementing the functions / actions specified in one or more blocks of the flowchart and / or block diagram. These computer-readable program instructions can also be stored in a computer-readable storage medium that causes a computer, programmable data processing apparatus, and / or other device to operate in a particular manner; thus, the computer-readable medium storing the instructions comprises an article of manufacture that includes instructions for implementing aspects of the functions / actions specified in one or more blocks of the flowchart and / or block diagram.

[0115] Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, thereby causing the instructions executed on the computer, other programmable data processing apparatus, or other device to perform the functions / actions specified in one or more boxes of a flowchart and / or block diagram.

[0116] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of an instruction, which contains one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than those shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0117] Example embodiments have been disclosed herein, and while specific terminology has been used, it is for illustrative purposes only and should be construed as such, and is not intended to be limiting. In some instances, it will be apparent to those skilled in the art that features, characteristics, and / or elements described in conjunction with particular embodiments may be used alone, or in combination with features, characteristics, and / or elements described in conjunction with other embodiments, unless otherwise expressly indicated. Therefore, those skilled in the art will understand that various changes in form and detail may be made without departing from the scope of the invention as set forth in the appended claims.

Claims

1. A method of playing a vehicle acoustic warning sound, characterized by, The method comprises: acquiring an original sound source of a warning sound currently applied by a vehicle; establishing a multi-dimensional attribute mapping relationship between vehicle dynamic parameters and the original sound source; acquiring current vehicle dynamic parameters in real time, and combining the multi-dimensional attribute mapping relationship to perform multi-dimensional adjustment on the original sound source to generate an audio stream for playing.

2. The method of claim 1, wherein, Before acquiring the original sound source of the warning sound currently applied by the vehicle, the method further comprises: auditing and downloading different types of warning sounds, or accessing self-created warning sounds that pass the audit; selecting a warning sound from the vehicle-inherent warning sound, the audited and downloaded warning sound, and the self-created warning sound for application.

3. The method of claim 1, wherein, The establishing of the multi-dimensional attribute mapping relationship between the vehicle dynamic parameters and the original sound source comprises: decomposing the original sound source into sound particles with multiple attribute dimensions; mapping any vehicle dynamic parameter to any attribute dimension of the sound particles; mapping a parameter value of any vehicle dynamic parameter to an attribute value of the sound particles in the attribute dimension corresponding to the vehicle dynamic parameter; constructing a sound particle query table between the vehicle dynamic parameters and the original sound source through interpolation.

4. The method of claim 1, wherein, The vehicle dynamic parameters comprise a speed parameter, a gear parameter, and a steering wheel steering parameter. The attributes of the original sound source comprise a frequency attribute, a volume attribute, and a spatial orientation attribute.

5. The method of claim 4, wherein, The speed parameter and the frequency attribute are mapped. The speed parameter and the frequency attribute satisfy a certain logarithmic mapping relationship, and the logarithmic mapping relationship is a positive feedback relationship.

6. The method of claim 4, wherein, The gear parameter and the volume attribute are mapped. When the vehicle switches to the reverse gear, odd harmonic waves and low-frequency square wave pulses are superimposed. When the vehicle switches to the forward gear, even harmonic waves are superimposed.

7. The method of claim 4, wherein, The steering wheel steering parameter and the spatial orientation attribute are mapped. When the vehicle performs left steering, more power amplifiers are allocated to the sound channels on the left side of the vehicle than to the sound channels on the right side of the vehicle. When the vehicle performs right steering, more power amplifiers are allocated to the sound channels on the right side of the vehicle than to the sound channels on the left side of the vehicle.

8. An apparatus for playing a vehicle acoustic warning tone, characterized by The apparatus is configured to implement the method of any one of claims 1-7, and the apparatus comprises: a sound source acquisition module configured to acquire an original sound source of a warning sound currently applied by a vehicle; an attribute mapping module configured to establish a multi-dimensional attribute mapping relationship between vehicle dynamic parameters and the original sound source; an audio playing module configured to acquire current vehicle dynamic parameters in real time, and combine the multi-dimensional attribute mapping relationship to perform multi-dimensional adjustment on the original sound source to generate an audio stream for playing.

9. An electronic device, comprising: The electronic device comprises: at least one processor, and a memory connected to the at least one processor in communication; the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to perform the steps of the method of any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer instructions for enabling the processor to perform the steps of the method of any one of claims 1-7 when executed.

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