Active sound design method, device and equipment and readable storage medium
By obtaining and preprocessing the sound data of vehicle components, building and optimizing the active sound wave sound system, and conducting subjective and objective evaluation, the problems of high repetition of active sound wave development and lack of evaluation system for new energy vehicles are solved, and high quality and obvious brand characteristics are achieved. active sound wave design.
Patent Information
- Application Number
- CN202411571221.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-02-18
AI Technical Summary
The active sound development of new energy vehicles in the existing technology mainly relies on the modification of the sound of the models that have been launched on the market, with high repetition and a lack of an effective active sound evaluation system.
By obtaining the sound data of the corresponding components of the vehicle, pre-processing to obtain the original sound source sample, constructing an active sound wave sound system, loading the original sound source sample and performing editing and noise reduction processing, and then subjective and objective evaluation is performed, and the target sound source data is finally obtained.
It has achieved innovation in active sound wave design, improved the brand characteristics and user experience of the design, and ensured the natural comfort and high quality of the synthetic sound wave.
Smart Images
Figure CN119475582A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of active sound wave development for automobiles, and specifically relates to a design method, device, equipment and readable storage medium for active sound waves. Background Art
[0002] The development of active sound waves is mainly due to the development trend of intelligentization in the automotive industry. With the progress of the automotive industry, the number of cylinders in car engines has been continuously reduced, and even traditional internal combustion engines have been replaced by electric motors. This transformation has made the optimization of mechanical systems more complicated and the development of brand-specific engine sounds more difficult. In order to maintain the uniqueness of the engine sound and enhance the user's driving experience, active sound control has been introduced into the synthesis of car engine sounds.
[0003] Active sound control is a complex interdisciplinary technology that involves knowledge from multiple fields such as automotive acoustics, electronic acoustics, music acoustics, and sound signal processing. Using this technology, you can design and create personalized engine sounds to meet the sound quality needs of different customers. Active sound technology can not only simulate the engine sound of traditional fuel vehicles, but also create power system sounds with brand characteristics. Therefore, it is of great significance for OEMs to study the design and evaluation methods of sound sources of new energy vehicles, improve the ability of active sound design, and improve customers' actual car experience in order to create product DNA.
[0004] At present, the development of active sound waves of new energy vehicles is mainly through the use of the sound waves of models already on the market after appropriate modification, which has a high degree of repetition. Psychoacoustics and sound quality technology are rarely used to design software for composing sound, and the existing sound wave evaluation methods are relatively scattered, lacking evaluation methods for active sound wave systems. Summary of the invention
[0005] The purpose of the embodiments of the present application is to provide a design method, device, automobile and readable storage medium for active sound, so as to solve the problem that in the prior art, sound development mostly uses existing sound materials of marketed models after appropriate modification, has high repetitiveness, and lacks an active sound evaluation system.
[0006] In order to solve the above technical problems, this application is implemented as follows: In a first aspect, an embodiment of the present application provides a method for designing an active sound wave, the method comprising: Acquire sound data of corresponding parts of the vehicle, and pre-process the sound data to obtain multiple groups of original sound source samples; Construct an active sound wave sound generation system, load the original sound source sample based on the sound generation system, and obtain the first sound wave sound source data; Performing editing and noise reduction processing on the first sound wave sound source data to obtain a first sound wave sound source sample; Performing a subjective sound source evaluation on the first sound wave sound source sample to obtain a second sound wave sound source sample; Loading the second sound source sample based on the sound system, and debugging the sound components of the whole vehicle according to the loading result to obtain the second sound source data; An objective sound source evaluation is performed on the second sound wave sound source data to obtain target sound wave sound source data.
[0007] Compared with the prior art, the above technical solution provided by the present application includes at least the following beneficial effects: The present application first obtains the sound data of the corresponding parts of the vehicle as the original sound source sample, then constructs the sound system of the active sound wave, loads these original sound source samples, and obtains the first sound wave sound source data. Then, the first sound wave sound source data is edited and noise-reduced to ensure the quality of the sound source data and avoid the unnatural and uncomfortable sound effect of the subsequent synthetic sound wave, thereby obtaining the first sound wave sound source sample. Afterwards, the first sound wave sound source sample is subjected to subjective sound source evaluation to screen out the second sound wave sound source sample. The second sound wave sound source sample is loaded on the sound system of the vehicle, and the sound components of the whole vehicle are debugged according to the loading results to obtain the second sound wave sound source data. Finally, an objective sound source evaluation is performed on it, and the target sound wave sound source data is finally obtained. The present application directly collects the sound data under the actual working conditions of the vehicle as the sound source sample, and processes it to make the synthesized active sound wave more brand-specific. Through continuous debugging and subjective and objective evaluation, the final solution is screened out to ensure the good experience brought by the active sound wave to the user during driving.
[0008] Preferably, the specific steps of obtaining the sound data of the corresponding parts of the vehicle and preprocessing the sound data to obtain multiple groups of original sound source samples include: Collect sound data of corresponding parts of the vehicle; Performing order analysis on the sound data and arranging them in ascending order based on the main order frequency to obtain intermediate sound data; The intermediate sound data is A / D converted into digital signals and stored as multiple groups of original sound source samples.
[0009] In this solution, the sound data of the corresponding parts of the vehicle when they are working is collected as the original sound source samples required for the subsequent synthetic sound waves. The preprocessing process processes the sound data into sounds that are more in line with the vehicle's working conditions, thereby enhancing the realism of the active sound waves from the original sound source samples.
[0010] Preferably, the specific steps of constructing an active sound wave sound generation system, loading the original sound source sample based on the sound generation system, and obtaining the first sound wave sound source data include: Acquire vehicle signal parameters, wherein the signal parameters at least include engine speed, throttle opening and vehicle speed information; According to the car signal parameters, the original sound source samples are mobilized based on the active sound wave algorithm to synthesize the sound wave source digital signal; Convert the digital signal of the sound source into an analog voltage signal; The speaker is driven to respond to the analog voltage signal to obtain the first sound wave source data.
[0011] In this solution, the sound system loads the original sound source samples and drives the speakers to produce specific sound effects, meeting the customer demand for sound experience in electric motor vehicles.
[0012] Preferably, the specific steps of performing editing and noise reduction processing on the first sound source data to obtain the first sound source sample include: Intercepting the desired audio from the first sound wave sound source data; The noise in the desired audio is removed, and the noise amplitude of the desired audio is optimized to obtain a first sound wave source sample.
[0013] In this solution, the first sound wave sound source data is processed and optimized to ensure the sound quality of the first sound wave sound source data and avoid the unnatural and uncomfortable sound effect of the active sound wave.
[0014] Preferably, the specific steps of performing subjective sound source evaluation on the first sound source sample to obtain the second sound source sample include: The first sound source samples are scored and the first score ranking is obtained; The first score ranking is averaged and processed for variance, and the second score ranking is obtained by descending the ranking according to the processing results; The second scoring ranking is assigned corresponding points and weights, the subjective scoring ranking corresponding to the first sound wave source sample is obtained by calculation, and the second sound wave source sample is determined based on the subjective scoring ranking.
[0015] In this program, participants are allowed to directly experience the sound wave effects for evaluation and screening, ensuring good sound wave effects from a practical perspective.
[0016] Preferably, the specific steps of loading the second sound source sample based on the sound system and debugging the sound components of the whole vehicle according to the loading result to obtain the target sound source data include: Optimizing the sound parameters of the sound-generating component to obtain target sound parameters, wherein the sound parameters at least include speaker parameters and equalizer parameters; Based on the target sound parameters, the second sound source sample is loaded to obtain the target sound source data.
[0017] In this solution, the parameters of the sound components of the in-car sound system are adjusted to ensure the stability of the active sound wave effect, making the sound more high-quality, spatial, and follow-up.
[0018] Preferably, the specific steps of objectively evaluating the target sound source data to obtain the final sound source data include: The objective sound source scoring standards are divided based on the objective sound source evaluation dimensions, where the objective sound source evaluation dimensions include total sound pressure value, frequency distribution, order ratio and sound quality; Based on objective sound source evaluation standards, the final sound wave source data is obtained.
[0019] In this solution, a more scientific and objective dimension is used to evaluate the sound quality, making the evaluation results more objective and standardized.
[0020] In a second aspect, an embodiment of the present application provides a design device for active sound waves, including: The sample collection module obtains the sound data of the corresponding parts of the vehicle and pre-processes the sound data to obtain multiple groups of original sound source samples; The sound system module is used to construct a sound system for active sound waves, load the original sound source sample based on the sound system, and obtain the first sound source data; A sample design module, used for performing editing and noise reduction processing on the first sound source data to obtain a first sound source sample; A subjective evaluation module, used for performing a subjective sound source evaluation on the first sound source sample to obtain a second sound source sample; The vehicle debugging module is used to load the second sound source sample based on the sound system, and debug the sound components of the vehicle according to the loading result to obtain the second sound source data; The objective evaluation module is used to perform objective sound source evaluation on the second sound wave sound source data to obtain target sound wave sound source data.
[0021] In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method described in the first aspect.
[0022] In a fourth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.
[0023] It can be understood that the beneficial effects of the technical solutions provided in the second, third and fourth aspects can be found in the relevant description of the first aspect, and will not be repeated here.
[0024] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 is a schematic flow chart of a design method for active sound waves provided in some embodiments of the present application; Figure 2 is a block diagram of an active sound wave design device shown in some embodiments of the present application; Figure 3 is a block diagram of an electronic device shown in some embodiments of the present application; Figure 4 is a block diagram of a sound generation system shown in some embodiments of the present application; Figure 5 is a schematic diagram of an audio editing process shown in some embodiments of the present application; Figure 6 is a schematic diagram of a frequency amplitude modification and noise removal process shown in some embodiments of the present application; Figure 7 is a schematic diagram of the frequency amplitude modification gain & loss process shown in some embodiments of the present application; DETAILED DESCRIPTION The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0026] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here. In addition, the "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally represents that the objects associated with each other are in an "or" relationship.
[0027] In the following, in conjunction with the accompanying drawings, a design method, device, equipment and readable storage medium for active sound waves provided by an embodiment of the present application are described in detail through specific embodiments and their application scenarios.
[0028] Figure 1 FIG. 1 is a flow chart of a design method for active sound waves according to the first embodiment of the present application. Figure 1 As shown, the method includes: Step S101: Acquire sound data of corresponding components of a vehicle, and pre-process the sound data to obtain multiple groups of original sound source samples.
[0029] Among them, the sound data of the corresponding parts of the vehicle can generally be divided into several categories, such as the engine acceleration sound, the electric vehicle acceleration motor sound, and some chord sounds.
[0030] For example, the sound of an engine accelerating can be obtained by collecting the sound data of several vehicle engines accelerating.
[0031] Furthermore, the order analysis of the acceleration sounds of the car engines is performed, and appropriate orders are selected for combination to obtain sound sources with engine characteristics. After A / D conversion, these sound sources are stored as multiple groups of original engine sound source samples.
[0032] Step S102: constructing an active sound wave sound generation system, and loading the original sound source sample based on the sound generation system to obtain first sound wave sound source data.
[0033] See also Figure 4 The new energy vehicle signal processor (Digital Signal Processor, hereinafter referred to as DSP) extracts the active sound source file based on the input controller area network (Controller Area Network, hereinafter referred to as CAN) signal through the active sound algorithm, generates a specific digital signal, and sends it to the power amplifier module, and finally drives the speaker to emit a specific sound effect.
[0034] Among them, CAN is mainly used to connect various controllers in the vehicle to achieve reliable information sharing and reduce the number of wiring harnesses in the vehicle. The input signal is the characteristic parameters of the actual working condition of the vehicle, such as engine speed, throttle opening, electric switch opening and vehicle speed.
[0035] Specifically, the active sound source file is stored in the DSP. When the active sound switch is turned on, the microcontroller unit (MCU) will receive relevant car signal parameters such as engine speed signal, throttle opening, electric door opening and vehicle speed. The MCU calls and executes the sound algorithm in the DSP based on these signal parameters. The sound algorithm will call the sound source files stored in the DSP. These sound source files are digital signals and need to be converted into analog voltage signals through D / A. The analog voltage signal is transmitted to the speaker through the power amplifier module, and finally drives the speaker to emit a specific sound and obtain the first sound source data.
[0036] Step S103: performing editing and noise reduction processing on the first sound source data to obtain a first sound source sample.
[0037] See also Figure 5 , Figure 6 and Figure 7Based on the sound source data of the first sound wave, the sound source design is performed using sound design software. Among them, the sound source design at least includes editing and noise reduction.
[0038] Preferably, Audition CC sound design software may be used for sound source design.
[0039] As a possible implementation method, first, the required audio segment in the first sound source data is intercepted through the audio editing function, then the noise is removed by using the frequency amplitude modification function, and finally, the amplitude of the noise is gained or reduced by the frequency amplitude modification function again to optimize the sound source quality.
[0040] The first sound source data is an unprocessed original sound, such as an engine acceleration sound, which can be obtained by collecting sound data of multiple vehicle engines accelerating and loading them into the sound system.
[0041] Specifically, harmonic synthesis technology can be used to decompose non-sinusoidal signals into basic parts and their multiples through the principle of Fourier analysis, and a completely new sound can be generated by adjusting the frequency components of the engine order noise.
[0042] Step S104: performing a subjective sound source evaluation on the first sound source sample to obtain a second sound source sample.
[0043] As a possible implementation method, first of all, the first round of subjective evaluation and screening of the first sound source samples is carried out by NVH professional engineers to obtain sound source samples of different styles.
[0044] Furthermore, in the second round, different customer groups were organized to form different scoring groups, and the selected sound source samples of different styles were evaluated and scored in the listening room.
[0045] Please refer to Table 1, where the subjective sound source evaluation uses the mean value and variance for screening, and adds the age factor to form an improved numerical estimation method. The specific steps are as follows: (1) Each driving review is ranked according to the mean value and variance of each sound source style (the larger the mean value and the smaller the variance, the more popular the style is and the higher the ranking); (2) Different scores are assigned according to each ranking. For example, if you rank first, you will be assigned 10 points; if you rank second, you will be assigned 9 points... if you rank tenth, you will be assigned 1 point; (3) Different weights were assigned according to age groups: the first weight was 0.5, the second weight for group 1 was 0.3, and the second weight for group 2 was 0.2; (4) Final score: first ranking score * 0.5 + second group 1 ranking * 0.3 + second group 2 ranking * 0.2. The second sound wave source sample is determined based on the final score.
[0046] Table 1 Step S105: loading the second sound source sample based on the sound system, and debugging the sound components of the whole vehicle according to the loading result to obtain the second sound source data.
[0047] Among them, the debugging contents of the sound-producing components include speaker volume debugging, sound gain debugging, sound delay debugging, and sound source EQ debugging.
[0048] Preferably, the sound source EQ debugging needs to consider the sound field matching test, sound effect debugging, dynamic characteristic debugging and sound stability debugging, so as to ensure the sound quality, follow-up and spatial sense.
[0049] Step S106: performing objective sound source evaluation on the second sound wave source data to obtain target sound wave source data.
[0050] Among them, objective sound source evaluation mainly includes four dimensions: total sound pressure value, frequency distribution, order ratio and sound quality.
[0051] Among them, the total sound pressure level requirement is that the sound pressure level gradually increases with the increase of engine speed and tends to be linear.
[0052] Among them, sound quality is mainly evaluated through three dimensions: speech clarity, loudness, and sharpness.
[0053] It should be noted that the frequency distribution is divided into three intervals, including low frequency, frequency range 0-250Hz, medium and high frequency range 250Hz-800Hz, high frequency range 800Hz-10KHz. At low frequency: the absolute listening threshold is higher, for example, the sound pressure level of a pure tone of 50Hz must exceed 40dB to be heard, and it is about 15dB at 200Hz; at medium and high frequency: the absolute listening threshold is between 5-10dB; at high frequency: the absolute listening threshold is >5dB. Among them, the absolute listening threshold of 2KHz-5KHz is >0dB. At low speed, the sound is mainly low-frequency components, and at high speed, the sound is mainly medium and high-frequency components. This different frequency distribution caused by changes in speed is also the easiest for people to perceive subjectively.
[0054] It should be noted that acceleration noise has obvious order characteristics, that is, the energy of the order components is significantly higher than the surrounding sounds. Different order ratios give people different feelings. Studies have shown that even-order sounds give people a "heavy feeling", while half-order sounds give people a stimulating "sense of movement".
[0055] The above embodiment provides a method for designing active sound waves. First, the sound data of the corresponding parts of the vehicle are obtained as the original sound source samples. Then, the sound system of the active sound waves is constructed, and these original sound source samples are loaded to obtain the first sound wave source data. Then, the first sound wave source data is edited and noise-reduced to ensure the quality of the sound source data and avoid the unnatural and uncomfortable sound effects of the subsequent synthetic sound waves, thereby obtaining the first sound wave source sample. After that, the first sound wave source sample is subjected to a subjective sound source evaluation to screen out the second sound wave source sample. The second sound wave source sample is loaded on the sound system of the vehicle, and the sound components of the whole vehicle are debugged according to the loading results to obtain the second sound wave source data. Finally, an objective sound source evaluation is performed on it to finally obtain the target sound wave source data.
[0056] In addition, by directly collecting the sound data of the vehicle under actual working conditions as the sound source sample and processing it, the synthesized active sound wave has more brand characteristics. Through continuous debugging and subjective and objective evaluation, the final solution is selected to ensure that the active sound wave brings a good experience to users during driving.
[0057] It should be noted that the active sound wave design method provided in the embodiment of the present application can be executed by a design device for active sound waves, or a control module in the design device for active sound waves for executing the method for designing loading active sound waves. In the embodiment of the present application, the method for designing active sound waves provided in the embodiment of the present application is described by taking the method for designing loading active sound waves executed by the design device for active sound waves as an example.
[0058] Figure 2 is a schematic diagram of a design device for active sound waves according to the second embodiment of the present application, such as Figure 2 As shown, the design device of the active sound wave includes: Sample collection module 201: used to obtain the sound data of the corresponding parts of the vehicle, and pre-process the sound data to obtain multiple groups of original sound source samples; specifically including: Collect sound data of corresponding parts of the vehicle; Performing order analysis on the sound data and performing ascending order arrangement based on the main order frequency to obtain intermediate sound data; The intermediate sound data is A / D converted into digital signals and stored as multiple groups of original sound source samples.
[0059] The sound system module 202 is used to construct a sound system for active sound waves, load the original sound source sample based on the sound system, and obtain the first sound source data; specifically includes: Acquiring vehicle signal parameters, wherein the signal parameters at least include engine speed, throttle opening and vehicle speed information; According to the automobile signal parameters, the original sound source sample is mobilized based on the active sound wave algorithm to synthesize the sound wave sound source digital signal; Convert the sound source digital signal into an analog voltage signal; The speaker is driven to respond to the analog voltage signal to obtain the first sound source data.
[0060] The sample design module 203 is used to perform a clipping and noise reduction process on the first sound source data to obtain a first sound source sample; specifically, it includes: Intercepting the desired audio from the first sound source data; The noise in the desired audio is removed, and the noise amplitude of the desired audio is optimized to obtain the first sound source sample.
[0061] The subjective evaluation module 204 is used to perform a subjective sound source evaluation on the first sound source sample to obtain a second sound source sample; specifically, it includes: Performing a driving evaluation and scoring on the first sound source sample to obtain a first scoring ranking; Performing average and variance processing on the first score ranking, and performing descending ranking according to the processing result to obtain a second score ranking; The second scoring ranking is assigned corresponding points and weights, a subjective scoring ranking corresponding to the first sound source sample is obtained by calculation, and a second sound source sample is determined based on the subjective scoring ranking.
[0062] The vehicle debugging module 205 is used to load the second sound source sample based on the sound system, and debug the sound components of the vehicle according to the loading result to obtain the second sound source data; specifically includes: Optimizing the sound parameters of the sound-generating component to obtain target sound parameters, wherein the sound parameters at least include speaker parameters and equalizer parameters; Based on the target sound parameters, the second sound source sample is loaded to obtain target sound source data.
[0063] Objective evaluation module 206: used to objectively evaluate the second sound source data to obtain target sound source data; specifically includes: Dividing objective sound source scoring standards based on objective sound source evaluation dimensions, wherein the objective sound source evaluation dimensions include total sound pressure value, frequency distribution, order ratio and sound quality; Based on the objective sound source evaluation standard, the final sound wave sound source data is obtained.
[0064] The present embodiment provides a design device for active sound waves. First, the sound data of the corresponding parts of the vehicle are obtained as the original sound source samples, and then the sound system of the active sound waves is constructed, and these original sound source samples are loaded to obtain the first sound wave source data. Then, the first sound wave source data is edited and noise-reduced to ensure the quality of the sound source data and avoid the unnatural and uncomfortable sound effects of the subsequent synthetic sound waves, thereby obtaining the first sound wave source sample. Afterwards, the first sound wave source sample is subjected to a subjective sound source evaluation to screen out the second sound wave source sample. The second sound wave source sample is loaded on the sound system of the vehicle, and the sound components of the whole vehicle are debugged according to the loading results to obtain the second sound wave source data. Finally, an objective sound source evaluation is performed on it to finally obtain the target sound wave source data.
[0065] We also directly collect the sound data of the actual working conditions of the vehicle as the sound source samples and process them to make the synthesized active sound waves more brand-specific. Through continuous debugging and subjective and objective evaluation, we select the final solution to ensure that the active sound waves bring a good experience to users during driving.
[0066] The active sound wave design device in the embodiment of the present application can be a device, or a component, integrated circuit, or chip in a terminal. The device can be a mobile electronic device or a non-mobile electronic device. Exemplarily, the mobile electronic device can be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc. The non-mobile electronic device can be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine or a self-service machine, etc., which is not specifically limited in the embodiment of the present application.
[0067] The active sound design device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.
[0068] The active sound wave design device provided in the embodiment of the present application can achieve Figure 1 To avoid repetition, the various processes implemented by the active sound wave design device in the method embodiment will not be described here.
[0069] Optionally, an embodiment of the present application further provides an electronic device, including a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, each process of the above-mentioned active sound wave design method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.
[0070] The embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned active sound design method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.
[0071] The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.
[0072] The embodiment of the present application further provides a chip, which includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the various processes of the above-mentioned active sound design method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
[0073] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.
[0074] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.
[0075] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.
[0076] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.
Claims
1. A design method for active sound waves, characterized in that: The specific steps include: Acquiring sound data of corresponding components of the vehicle, and preprocessing the sound data to obtain multiple groups of original sound source samples; Constructing an active sound wave sound generation system, and loading the original sound source sample based on the sound generation system to obtain first sound wave sound source data; Performing editing and noise reduction processing on the first sound source data to obtain a first sound source sample; Performing a subjective sound source evaluation on the first sound source sample to obtain a second sound source sample; Loading the second sound source sample based on the sound system, and debugging the sound components of the whole vehicle according to the loading result to obtain the second sound source data; An objective sound source evaluation is performed on the second sound wave source data to obtain target sound wave source data.
2. The design method of active sound wave according to claim 1, characterized in that: The specific steps of obtaining the sound data of the corresponding parts of the vehicle and preprocessing the sound data to obtain multiple groups of original sound source samples include: Collect sound data of corresponding parts of the vehicle; Performing order analysis on the sound data and performing ascending order arrangement based on the main order frequency to obtain intermediate sound data; The intermediate sound data is A / D converted into digital signals and stored as multiple groups of original sound source samples.
3. The method for active acoustic wave design according to claim 1, characterized in that: The specific steps of constructing the active sound wave sound generation system and loading the original sound source sample based on the sound generation system to obtain the first sound wave sound source data include: Acquiring vehicle signal parameters, wherein the signal parameters at least include engine speed, throttle opening and vehicle speed information; According to the automobile signal parameters, the original sound source sample is mobilized based on the active sound wave algorithm to synthesize the sound wave sound source digital signal; Convert the sound source digital signal into an analog voltage signal; The speaker is driven to respond to the analog voltage signal to obtain the first sound source data.
4. The design method of active sound wave according to claim 1, characterized in that: The specific steps of performing editing and noise reduction processing on the first sound source data to obtain the first sound source sample include: Intercepting the desired audio from the first sound source data; The noise in the desired audio is removed, and the noise amplitude of the desired audio is optimized to obtain the first sound source sample.
5. The design method of active sound wave according to claim 1, characterized in that: The specific steps of performing subjective sound source evaluation on the first sound source sample to obtain the second sound source sample include: Performing a driving evaluation and scoring on the first sound source sample to obtain a first scoring ranking; Performing average and variance processing on the first score ranking, and performing descending ranking according to the processing result to obtain a second score ranking; The second scoring ranking is assigned corresponding points and weights, a subjective scoring ranking corresponding to the first sound source sample is obtained by calculation, and a second sound source sample is determined based on the subjective scoring ranking.
6. The design method of active sound wave according to claim 1, characterized in that: The specific steps of loading the second sound source sample based on the sound system and debugging the sound components of the whole vehicle according to the loading result to obtain the target sound source data include: Optimizing the sound parameters of the sound-generating component to obtain target sound parameters, wherein the sound parameters at least include speaker parameters and equalizer parameters; Based on the target sound parameters, the second sound source sample is loaded to obtain target sound source data.
7. The active sound wave design method according to claim 1, characterized in that: The specific steps of objectively evaluating the target sound source data to obtain the final sound source data include: Dividing objective sound source scoring standards based on objective sound source evaluation dimensions, wherein the objective sound source evaluation dimensions include total sound pressure value, frequency distribution, order ratio and sound quality; Based on the objective sound source evaluation standard, the final sound wave sound source data is obtained.
8. An active sound wave design device, characterized in that: include: A sample collection module, which obtains sound data of corresponding parts of the vehicle and pre-processes the sound data to obtain multiple groups of original sound source samples; A sound system module, used to construct a sound system for active sound waves, load the original sound source sample based on the sound system, and obtain the first sound source data; A sample design module, used for performing editing and noise reduction processing on the first sound source data to obtain a first sound source sample; A subjective evaluation module, used for performing a subjective sound source evaluation on the first sound source sample to obtain a second sound source sample; A vehicle debugging module, used for loading the second sound source sample based on the sound system, and debugging the sound components of the vehicle according to the loading result to obtain the second sound source data; The objective evaluation module is used to perform objective sound source evaluation on the second sound wave source data to obtain target sound wave source data.
9. An electronic device, characterized in that: include: A memory, a processor, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, is the steps of the active sound wave design method as described in claims 1-7.
10. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, the steps of the active sound wave design method as described in claims 1-7 are implemented.