Self-defined sound mixing method, device and equipment for low-speed warning sound of electric vehicle and medium

Abstract

The invention relates to an electric vehicle low-speed warning tone custom sound mixing method, device and equipment and a medium, and the method comprises the steps: obtaining at least one basic sound source and at least one custom sound source from a pre-constructed sound source library, and generating a basic sound track based on the at least one basic sound source, generating a plurality of independent audio tracks based on the at least one custom sound source, and editing the at least one custom sound source through a first sound source editing processing method in a preset sound source adjustment method library to obtain a plurality of processed independent audio tracks; carrying out sound mixing based on a preset sound mixing method to generate a mixed audio track, and carrying out editing processing on the mixed audio track through a sound source editing processing method; and verifying the processed mixed audio track, and generating a formal sound source when a preset verification condition is satisfied. Therefore, the problems that the sound pressure level of the prompt tone is low and the personalization of the prompt tone is insufficient when the electric vehicle moves at a low speed in the prior art are solved, the safety risk is reduced, and the user experience is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a low-speed prompt sound self-defining mixing method, device, equipment and medium for electric vehicles. BACKGROUND

[0002] The radiated noise of an electric vehicle is obviously lower than that of a traditional internal combustion engine vehicle. An electric vehicle that is too quiet is not suitable for perception when driving at low speed, and is more likely to cause traffic accidents, which will bring great safety hazards to pedestrians around. Relevant regulations require electric vehicles to emit a prompt sound when driving at low speed to prompt pedestrians around to avoid the vehicle.

[0003] In related technologies, manufacturers configure a low-speed prompt sound system on vehicles, and design and calibrate the sound pressure level of the low-speed prompt sound during vehicle development. The vehicle will automatically emit a low-speed prompt sound set by the vehicle manufacturer under the set driving conditions.

[0004] However, the low-speed prompt sound transmitted to the vehicle interior will cause noise interference to the driver, affecting driving safety, and the low-speed prompt sound cannot be customized according to personal preferences, affecting the vehicle use experience, and needs to be solved urgently. SUMMARY

[0005] The present application provides a low-speed prompt sound self-defining mixing method, device, equipment and medium for electric vehicles to solve the problems of low sound pressure level of the prompt sound and insufficient individualization of the prompt sound when the electric vehicle is moving at low speed in related technologies, reduce safety risks, and improve user experience.

[0006] The first aspect of the present application provides a low-speed prompt sound self-defining mixing method for electric vehicles, comprising the following steps: obtaining at least one basic sound source and at least one self-defined sound source from a pre-constructed sound source library, generating a basic audio track based on the at least one basic sound source, and generating a plurality of independent audio tracks based on the at least one self-defined sound source; editing and processing the at least one self-defined sound source through a first sound source editing and processing method in a pre-set sound source adjustment method library to obtain a plurality of processed independent audio tracks; mixing the basic audio track and the plurality of processed independent audio tracks based on a pre-set mixing method to generate a mixed audio track, and editing and processing the mixed audio track through a second sound source editing and processing method in the pre-set sound source adjustment method library to obtain a processed mixed audio track; verifying the processed mixed audio track, and generating an official sound source based on the processed mixed audio track when the processed mixed audio track meets a pre-set verification condition.

[0007] Furthermore, in some embodiments, the step of editing the at least one custom audio source using a first audio source editing method from a preset audio source adjustment method library to obtain multiple processed independent audio tracks includes: acquiring the type of each custom audio source and at least one vehicle status signal; determining a first-level audio source editing method based on the preset audio source adjustment method library and / or the custom audio source type and / or the at least one vehicle status signal; and editing the custom audio source based on the first-level audio source editing method to obtain multiple processed independent audio tracks.

[0008] Furthermore, in some embodiments, the method based on a preset mixing, which mixes the base track and the plurality of processed independent tracks to generate a mixed track, includes: verifying the base track and the plurality of processed independent tracks, using the verified base track as the base track, and standardizing the verified plurality of independent tracks to obtain a plurality of standardized independent tracks; and superimposing the standardized plurality of independent tracks onto the base track to generate the mixed track.

[0009] Further, in some embodiments, the step of verifying the processed mixed audio track and generating a formal sound source based on the processed mixed audio track when it meets preset verification conditions includes: acquiring the sound pressure level (SPL) data and 1 / 3 octave band SPL data of the processed mixed audio track; if the SPL data is greater than a preset SPL threshold and the 1 / 3 octave band SPL data is greater than a preset 1 / 3 octave band SPL threshold, then the mixed audio track is determined to meet the preset verification conditions, and a formal sound source is generated based on the processed mixed audio track. Otherwise, the mixed audio track is determined not to meet the preset verification conditions, and the frequency amplitude of the mixed audio track is adjusted until the preset verification conditions are met.

[0010] Furthermore, in some embodiments, it further includes: an audio output module.

[0011] The electric vehicle low-speed warning sound custom mixing method provided by the present invention obtains basic and custom audio sources from an audio source library, generates a basic audio track and multiple independent audio tracks, processes the custom audio track using a first audio processing method, then mixes to generate a mixed audio track, processes it again using a second audio processing method, and generates a formal audio source after passing verification. This method solves the problems of low sound pressure level and insufficient personalization of warning sounds when electric vehicles are moving at low speeds, reduces safety risks, and improves the user experience.

[0012] A second aspect of the present invention provides a custom mixing device for low-speed warning sounds of electric vehicles, wherein the device comprises: a construction module, configured to acquire at least one basic sound source and at least one custom sound source from a pre-constructed sound source library, generate a basic audio track based on the at least one basic sound source, and generate multiple independent audio tracks based on the at least one custom sound source; edit the at least one custom sound source using a first sound source editing processing method in a preset sound source adjustment method library to obtain multiple processed independent audio tracks; a mixing module, configured to mix the basic audio track and the multiple processed independent audio tracks using a preset mixing method to generate a mixed audio track, and edit the mixed audio track using a second sound source editing processing method in the preset sound source adjustment method library to obtain a processed mixed audio track; and a generation module, configured to verify the processed mixed audio track, and generate a formal sound source based on the processed mixed audio track when the processed mixed audio track meets preset verification conditions.

[0013] Furthermore, in some embodiments, the construction module is specifically used to: acquire the type of each custom audio source and at least one vehicle status signal; determine a primary audio source editing method based on the preset audio source adjustment method library, and / or the custom audio source type, and / or the at least one vehicle status signal; and edit the custom audio source based on the primary audio source editing method to obtain multiple processed independent audio tracks.

[0014] Furthermore, in some embodiments, the mixing module is specifically used to: verify the base track and the plurality of processed independent tracks, and use the verified base track as the base track, and to standardize the plurality of verified independent tracks to obtain a plurality of standardized independent tracks; and to superimpose the plurality of standardized independent tracks onto the base track to generate the mixed track.

[0015] Further, in some embodiments, the generation module is specifically used to: acquire the sound pressure level data and 1 / 3 octave band sound pressure level data of the processed mixed audio track; if the sound pressure level data is greater than a preset sound pressure level threshold, and the 1 / 3 octave band sound pressure level data is greater than a preset 1 / 3 octave band sound pressure level threshold, then it is determined that the mixed audio track meets the preset verification conditions, and a formal sound source is generated based on the processed mixed audio track. Otherwise, it is determined that the mixed audio track does not meet the preset verification conditions, and the frequency amplitude of the mixed audio track is adjusted until the preset verification conditions are met.

[0016] Furthermore, in some embodiments, it further includes: an audio output module.

[0017] The electric vehicle low-speed warning sound custom mixing device provided in the embodiments of the present invention obtains basic and custom sound sources from the sound source library, generates a basic sound track and multiple independent sound tracks, processes the custom sound track by a first audio processing method, then mixes to generate a mixed sound track, processes it by a second audio processing method, and generates a formal sound source after passing the verification. This solves the problem of low sound pressure level and insufficient personalization of the warning sound when the electric vehicle is moving at low speed in related technologies, reduces safety risks, and improves the user experience.

[0018] A third aspect of the present invention provides an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the electric vehicle low-speed warning sound custom mixing method described in the above embodiments.

[0019] A fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, the program being executed by a processor to implement the electric vehicle low-speed warning sound custom mixing method as described in the above embodiments.

[0020] A fifth aspect of the present invention provides a computer program product, including a computer program that is executed to implement the electric vehicle low-speed warning sound custom mixing method as described in the above embodiments.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 A flowchart of a method for custom mixing of low-speed warning sounds for electric vehicles according to an embodiment of the present invention; Figure 2 A schematic diagram of the time and frequency domains of a basic sound source provided according to a specific embodiment of the present invention; Figure 3 This is a schematic diagram of a custom sound source pitch shifting adjustment according to a specific embodiment of the present invention; Figure 4 This is a schematic diagram of the curve of a set frequency changing with vehicle speed according to a specific embodiment of the present invention; Figure 5 This is a schematic diagram of track mixing according to a specific embodiment of the present invention; Figure 6 A schematic diagram of a custom mixing process for a low-speed warning sound of an electric vehicle according to a specific embodiment of the present invention; Figure 7 A block diagram of a custom mixing device for low-speed warning sounds of electric vehicles provided according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of an electronic device provided according to an embodiment of the present invention. Detailed Implementation

[0023] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] The following describes a method, apparatus, device, and medium for custom mixing of low-speed warning sounds for electric vehicles, based on embodiments of the present invention, with reference to the accompanying drawings. Addressing the issues mentioned in the background art regarding the low sound pressure level and insufficient personalization of warning sounds during low-speed electric vehicle movement, the present invention provides a method for custom mixing of low-speed warning sounds for electric vehicles. This method obtains basic and custom sound sources from a sound source library, generates a basic sound track and multiple independent sound tracks, processes the custom sound track using a first audio processing method, then mixes to generate a mixed sound track, further processes it using a second audio processing method, and generates a final sound source after verification. This method solves the problems of low sound pressure level and insufficient personalization of warning sounds during low-speed electric vehicle movement, reduces safety risks, and improves the user experience.

[0025] Specifically, Figure 1 A flowchart illustrating a method for custom mixing of low-speed warning sounds for electric vehicles according to an embodiment of the present invention.

[0026] like Figure 1 As shown, the method for customizing the low-speed warning sound of an electric vehicle includes the following steps: In step S101, at least one basic audio source and at least one custom audio source are obtained from a pre-built audio source library. A basic audio track is generated based on the at least one basic audio source, and multiple independent audio tracks are generated based on the at least one custom audio source. The at least one custom audio source is edited using the first audio source editing method in the preset audio source adjustment method library to obtain multiple processed independent audio tracks.

[0027] Among them, the pre-built sound source library refers to the database of sound resources stored in advance in the system; the basic sound source refers to the sound file whose frequency shift changes with vehicle speed and is pre-set by the car manufacturer and conforms to the national mandatory standards; the custom sound source refers to the stable sound signal generated by different harmonic signal generators such as sine wave, square wave, and triangle wave, including electronic synthesized sound, natural sound effects and artificial sound effects; and the basic sound track refers to a single track generated based on the basic sound source, which is the reference track for mixing.

[0028] Specifically, in this embodiment of the invention, the acquired basic audio source is processed and converted into a track that can participate in mixing. Each custom audio source corresponds to an independent track, realizing independent control of one source and one track. Then, one or more audio source editing and processing methods are selected from the preset audio source adjustment method library to edit and process the custom audio source to make it more in line with user preferences and adaptable to vehicle scenarios.

[0029] Furthermore, in some embodiments, at least one custom audio source is edited using a first audio source editing method in a preset audio source adjustment method library to obtain multiple processed independent audio tracks, including: obtaining the type of each custom audio source and at least one vehicle status signal; determining a first-level audio source editing method based on the preset audio source adjustment method library, and / or the custom audio source type, and / or at least one vehicle status signal; and editing the custom audio source based on the first-level audio source editing method to obtain multiple processed independent audio tracks.

[0030] As one possible implementation, embodiments of the present invention can obtain a traditional engine-style sound source from a pre-built sound source library as a base sound source, and convert the base sound source into a track that can participate in mixing. Simultaneously, a narrowband sound signal fluctuating around 600Hz is obtained as a custom sound source. Then, the narrowband sound signal fluctuating around 600Hz is edited according to any sound source editing method in a preset sound source adjustment method library, or a sound source editing method is selected based on signals such as vehicle speed, acceleration, torque, and accelerator pedal opening. The fundamental frequency and harmonic frequencies of the sound source are adjusted by frequency shifting to change its listening experience (for example, if the added sound source has an excessively high frequency and an unsatisfactory listening experience, a pitch shifting method is used to lower its main frequency by 400Hz, adjusting it to around 200Hz). This results in a processed independent sound track. Simultaneously, a vehicle speed-related adjustment method can be obtained, such as... Figure 4 As shown, the frequency of the sound source increases with the increase of vehicle speed, thereby demonstrating the sense of acceleration. Figure 2 This is a schematic diagram of the time and frequency domains of a basic sound source provided according to a specific embodiment of the present invention. Figure 3 This is a schematic diagram of a custom sound source pitch shifting adjustment according to a specific embodiment of the present invention. Figure 4Table 1 is a list of sound source adjustment method libraries provided according to a specific embodiment of the present invention, showing a schematic diagram of the curve of the set frequency changing with vehicle speed.

[0031] Table 1

[0032] In step S102, based on a preset mixing method, the base audio track and multiple processed independent audio tracks are mixed to generate a mixed audio track. The mixed audio track is then edited using the second audio source editing method in the preset audio source adjustment method library to obtain the processed mixed audio track.

[0033] Among them, a mixed audio track refers to a single audio track formed by merging a basic audio track with multiple processed independent audio tracks through a multi-track mixing process.

[0034] Specifically, the core parameters are first initialized, and the volume weights of each independent audio track are initialized according to the user's priority settings for the custom audio track to ensure a balance between compliance and personalization. Secondly, the base audio track is merged with multiple processed independent audio tracks into a mixed audio track. Then, one or more audio source editing methods are selected from the preset audio source adjustment method library to edit the mixed audio track and obtain a processed mixed audio track that meets the user's requirements.

[0035] In some embodiments, based on a preset mixing method, a base track and multiple processed independent tracks are mixed to generate a mixed track, including: verifying the base track and multiple processed independent tracks, using the verified base track as the base track, and standardizing the verified multiple independent tracks to obtain multiple standardized independent tracks; and superimposing the standardized independent tracks onto the base track to generate a mixed track.

[0036] As one possible implementation, this invention can acquire one basic sound source and three different types of custom sound sources, generate a basic audio track based on the basic sound source, and simultaneously generate three independent audio tracks based on these custom sound sources. The basic audio track and the three independent audio tracks are then merged into a mixed audio track. Figure 5 This is a schematic diagram of track mixing according to a specific embodiment of the present invention, such as... Figure 5 As shown, the base track generated from the base sound source is track 1, track 2 and track 3 generated from the custom sound source are continuous tracks, and track 4 is an intermittent track. They are blended into a single mixed track through mixing technology. Then, equalization adjustment methods are selected from the sound source adjustment method library shown in Table 1 to edit and adjust the mixed track, resulting in the processed mixed track.

[0037] In step S103, the processed mixed audio track is verified, and when the processed mixed audio track meets the preset verification conditions, the official audio source is generated based on the processed mixed audio track.

[0038] Among them, the preset verification conditions refer to the conditions set in advance by the system to determine whether the sound source, sound track or mixed sound track meets the regulatory requirements.

[0039] Furthermore, in some embodiments, the processed mixed audio track is verified, and when the processed mixed audio track meets preset verification conditions, a formal sound source is generated based on the processed mixed audio track. This includes: acquiring the sound pressure level data and 1 / 3 octave band sound pressure level data of the processed mixed audio track; if the sound pressure level data is greater than a preset sound pressure level threshold, and the 1 / 3 octave band sound pressure level data is greater than a preset 1 / 3 octave band sound pressure level threshold, then the mixed audio track is determined to meet the preset verification conditions, and a formal sound source is generated based on the processed mixed audio track. Otherwise, the mixed audio track is determined not to meet the preset verification conditions, and the frequency amplitude of the mixed audio track is adjusted until the preset verification conditions are met.

[0040] Among them, sound pressure level data refers to the data that quantifies the sound pressure level in decibels (dB) and is used to reflect the intensity of sound. 1 / 3 octave band sound pressure level data refers to the effective sound pressure level of all sound energy in each frequency band after the sound frequency is divided into a narrow frequency band of 1 / 3 octave band.

[0041] As one possible implementation method, this embodiment of the invention uses the requirements of GB / T37153-2018 "Low-Speed ​​Warning Sound for Electric Vehicles" as the verification condition. Table 2 is a table of national standard requirements for the total sound pressure level and 1 / 3 octave band sound pressure level of the low-speed warning sound provided according to a specific embodiment of the invention. As shown in Table 2, assuming the current driving condition of the electric vehicle is a constant speed of 10 km / h, the sound pressure level threshold is 52 dB, the 1 / 3 octave band sound pressure level threshold is 47 dB in the 160 Hz frequency band, and the 1 / 3 octave band sound pressure level threshold is 46 dB in the 200 Hz frequency band. If the sound pressure level data at this time is 54 dB, which is greater than 52 dB, the 1 / 3 octave band sound pressure level threshold is... If the sound pressure level (SPL) data in the 160Hz band is 49dB, which is greater than 47dB, and the 1 / 3 octave band SPL threshold in the 200Hz band is 48dB, which is greater than 46dB, then two frequency bands meet the standard, and the system determines that the mixed audio track meets the preset verification conditions and generates the official sound source. If the sound SPL data at this time is 50dB, which is less than 52dB, the 1 / 3 octave band SPL data in the 160Hz band is 46dB, which is less than 47dB, and the 1 / 3 octave band SPL threshold in the 200Hz band is 45dB, which is less than 46dB, then the requirement of at least two frequency bands meeting the standard is not met. Therefore, the frequency amplitude of the mixed audio track needs to be adjusted until the preset verification conditions are met.

[0042] Table 2

[0043] Furthermore, in some embodiments, it also includes an audio output module for outputting the actual audio source.

[0044] As one possible implementation, the audio output module of this embodiment includes three parts: a controller, a high-power amplifier, and a speaker, realizing a closed-loop system of signal processing, amplification, and sound generation. The controller collects vehicle status data in real time, matches the corresponding official sound source according to the collected status signal, and dynamically adjusts the parameters of the official sound source according to the operating conditions. The adjusted official sound source is processed by the power amplifier, and the amplified electrical signal is transmitted to the corresponding speaker to be converted into sound.

[0045] To enable those skilled in the art to better understand the customized mixing method for low-speed warning sounds of electric vehicles according to embodiments of the present invention, the following explanation will be provided in conjunction with specific embodiments.

[0046] Figure 6 This is a schematic diagram of a customized mixing process for a low-speed warning sound of an electric vehicle according to a specific embodiment of the present invention, such as... Figure 6 As shown, the custom mixing process for the low-speed warning sound of the electric vehicle is divided into a consumer-creation stage and a vehicle-mounted storage and output stage. In the consumer-creation stage, the basic sound source and the custom sound source are first adjusted in a variety of ways, such as equalization adjustment, reverb adjustment, and harmonic adjustment. Then, they are processed by equalization adjustment, gain adjustment, and parameter correlation in the multi-track mixing stage. After entering the vehicle-mounted storage and output stage, regulatory compliance checks and file storage are carried out in sequence, and finally the audio output is completed.

[0047] The electric vehicle low-speed warning sound custom mixing method provided by the present invention obtains basic and custom audio sources from an audio source library, generates a basic audio track and multiple independent audio tracks, processes the custom audio track using a first audio processing method, then mixes to generate a mixed audio track, processes it again using a second audio processing method, and generates a formal audio source after passing verification. This method solves the problems of low sound pressure level and insufficient personalization of warning sounds when electric vehicles are moving at low speeds, reduces safety risks, and improves the user experience.

[0048] Next, referring to the accompanying drawings, we will describe the electric vehicle low-speed warning sound custom mixing device provided in an embodiment of the present invention.

[0049] Figure 7 A block diagram of a custom mixing device for low-speed warning sounds of electric vehicles provided according to an embodiment of the present invention.

[0050] like Figure 7As shown, the electric vehicle low-speed warning sound custom mixing device includes: a construction module 100, a mixing module 200, and a generation module 300.

[0051] The construction module 100 is used to obtain at least one basic audio source and at least one custom audio source from a pre-built audio source library, generate a basic audio track based on the at least one basic audio source, and generate multiple independent audio tracks based on the at least one custom audio source; edit the at least one custom audio source using a first audio source editing method in a preset audio source adjustment method library to obtain multiple processed independent audio tracks; the mixing module 200 is used to mix the basic audio track and multiple processed independent audio tracks using a preset mixing method to generate a mixed audio track, and edit the mixed audio track using a second audio source editing method in a preset audio source adjustment method library to obtain a processed mixed audio track; the generation module 300 is used to verify the processed mixed audio track, and generate a formal audio source based on the processed mixed audio track when the processed mixed audio track meets the preset verification conditions.

[0052] Furthermore, in some embodiments, the construction module 100 is specifically used to: acquire the type of each custom audio source and at least one vehicle status signal; determine a primary audio source editing processing method based on a preset audio source adjustment method library, and / or the custom audio source type, and / or at least one vehicle status signal; and edit the custom audio source based on the primary audio source editing processing method to obtain multiple processed independent audio tracks.

[0053] Furthermore, in some embodiments, the mixing module 200 is specifically used to: verify the base track and multiple processed independent tracks, use the verified base track as the base track, and standardize the verified multiple independent tracks to obtain multiple standardized independent tracks; and superimpose the multiple standardized independent tracks onto the base track to generate a mixed track.

[0054] Further, in some embodiments, the generation module 300 is specifically used to: acquire the sound pressure level data and 1 / 3 octave band sound pressure level data of the processed mixed audio track; if the sound pressure level data is greater than a preset sound pressure level threshold, and the 1 / 3 octave band sound pressure level data is greater than a preset 1 / 3 octave band sound pressure level threshold, then it is determined that the mixed audio track meets the preset verification conditions, and a formal sound source is generated based on the processed mixed audio track. Otherwise, it is determined that the mixed audio track does not meet the preset verification conditions, and the frequency amplitude of the mixed audio track is adjusted until the preset verification conditions are met.

[0055] Furthermore, in some embodiments, it also includes an audio output module for outputting the actual audio source.

[0056] It should be noted that the above explanation of the embodiment of the method for custom mixing of low-speed warning sounds for electric vehicles also applies to the device for custom mixing of low-speed warning sounds for electric vehicles in this embodiment, and will not be repeated here.

[0057] The electric vehicle low-speed warning sound custom mixing device provided in the embodiments of the present invention obtains basic and custom sound sources from the sound source library, generates a basic sound track and multiple independent sound tracks, processes the custom sound track by a first audio processing method, then mixes to generate a mixed sound track, processes it by a second audio processing method, and generates a formal sound source after passing the verification. This solves the problem of low sound pressure level and insufficient personalization of the warning sound when the electric vehicle is moving at low speed in related technologies, reduces safety risks, and improves the user experience.

[0058] Figure 8 This is a schematic diagram of an electronic device provided according to an embodiment of the present invention. The electronic device may include: The memory 801, the processor 802, and the computer program stored on the memory 801 and capable of running on the processor 802.

[0059] When the processor 802 executes the program, it implements the custom mixing method for low-speed warning sounds of electric vehicles provided in the above embodiments.

[0060] Furthermore, the electronic device also includes: Communication interface 803 is used for communication between memory 801 and processor 802.

[0061] The memory 801 is used to store computer programs that can run on the processor 802.

[0062] The memory 801 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0063] If the memory 801, processor 802, and communication interface 803 are implemented independently, then the communication interface 803, memory 801, and processor 802 can be interconnected via a bus to complete communication between them. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized into address buses, data buses, control buses, etc. For ease of representation, Figure 8The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0064] Optionally, in a specific implementation, if the memory 801, processor 802, and communication interface 803 are integrated on a single chip, then the memory 801, processor 802, and communication interface 803 can communicate with each other through an internal interface.

[0065] The processor 802 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present invention.

[0066] In addition, embodiments of the present invention also provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-described method for custom mixing of low-speed warning sounds for electric vehicles.

[0067] In addition, embodiments of the present invention also provide a computer program product, including a computer program, which is executed to implement the above-mentioned method for custom mixing of low-speed warning sounds for electric vehicles.

[0068] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0069] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0070] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more N executable instructions for implementing custom logic functions or processes, and the scope of preferred embodiments of the invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of the invention pertain.

[0071] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any of the following techniques known in the art, or a combination thereof: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0072] Those skilled in the art will understand that all or part of the steps of the methods described in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it includes one or a combination of the steps of the method embodiments.

Claims

1. A method for customizing the mixing of low-speed warning sounds for electric vehicles, characterized in that, Includes the following steps: Obtain at least one basic audio source and at least one custom audio source from a pre-built audio source library. Generate a basic audio track based on the at least one basic audio source and generate multiple independent audio tracks based on the at least one custom audio source. Edit the at least one custom audio source using the first audio source editing method in the preset audio source adjustment method library to obtain multiple processed independent audio tracks. Based on a preset mixing method, the base audio track and the multiple processed independent audio tracks are mixed to generate a mixed audio track. The mixed audio track is then edited using the second audio source editing method in the preset audio source adjustment method library to obtain the processed mixed audio track. The processed mixed audio track is verified, and when the processed mixed audio track meets the preset verification conditions, a formal audio source is generated based on the processed mixed audio track.

2. The method according to claim 1, characterized in that, The at least one custom audio source is edited using a first audio source editing method from a preset audio source adjustment method library to obtain multiple processed independent audio tracks, including: Obtain the type of each custom audio source and at least one vehicle status signal; The primary audio source editing and processing method is determined based on the preset audio source adjustment method library, and / or the custom audio source type, and / or at least one vehicle status signal; The custom audio source is edited using the first-level audio source editing method to obtain multiple processed independent audio tracks.

3. The method according to claim 1, characterized in that, The preset mixing method mixes the base audio track and the multiple processed independent audio tracks to generate a mixed audio track, including: The base audio track and the multiple processed independent audio tracks are verified, and the verified base audio track is used as the base track. The multiple verified independent audio tracks are then standardized to obtain multiple standardized independent audio tracks. The multiple independent audio tracks after the standardization process are superimposed onto the base track to generate the mixed audio track.

4. The method according to claim 1, characterized in that, The step of verifying the processed mixed audio track and generating a formal audio source based on the processed mixed audio track when the processed mixed audio track meets the preset verification conditions includes: Obtain the sound pressure level data and 1 / 3 octave band sound pressure level data of the processed mixed audio track; If the sound pressure level data is greater than the preset sound pressure level threshold, and the 1 / 3 octave band sound pressure level data is greater than the preset 1 / 3 octave band sound pressure level threshold, then the mixed audio track is determined to meet the preset verification conditions, and a formal audio source is generated based on the processed mixed audio track. Otherwise, if the mixed audio track is determined not to meet the preset verification conditions, the frequency amplitude of the mixed audio track will be adjusted until the preset verification conditions are met.

5. The method according to claim 1, characterized in that, Also includes: Audio output module, The audio output module is used to output the official audio source.

6. A customizable low-speed warning sound mixing device for electric vehicles, characterized in that, The device includes: The module is used to obtain at least one basic sound source and at least one custom sound source from a pre-built sound source library, generate a basic audio track based on the at least one basic sound source, and generate multiple independent audio tracks based on the at least one custom sound source; and edit the at least one custom sound source using a first sound source editing method in a preset sound source adjustment method library to obtain multiple processed independent audio tracks. The mixing module is used to mix the base audio track and the multiple processed independent audio tracks based on a preset mixing method to generate a mixed audio track, and to edit the mixed audio track using the second audio source editing processing method in the preset audio source adjustment method library to obtain the processed mixed audio track. The generation module is used to verify the processed mixed audio track, and generate an official audio source based on the processed mixed audio track when the processed mixed audio track meets the preset verification conditions.

7. The apparatus according to claim 6, characterized in that, The building module is specifically used for: Obtain the type of each custom audio source and at least one vehicle status signal; The primary audio source editing and processing method is determined based on the preset audio source adjustment method library, and / or the custom audio source type, and / or at least one vehicle status signal; The custom audio source is edited using the first-level audio source editing method to obtain multiple processed independent audio tracks.

8. An electronic device, characterized in that, include: The device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the electric vehicle low-speed warning tone custom mixing method as described in any one of claims 1-5.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the custom mixing method for low-speed alert sounds of electric vehicles as described in any one of claims 1-5.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the custom mixing method for low-speed warning sounds of electric vehicles as described in any one of claims 1-5.

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