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CN-121999752-A - Method and device for synthesizing active sound waves in vehicle and vehicle

CN121999752ACN 121999752 ACN121999752 ACN 121999752ACN-121999752-A

Abstract

The application relates to the technical field of vehicle sound wave synthesis, in particular to an in-vehicle active sound wave synthesis method, a device and a vehicle, wherein the method comprises the steps of collecting at least one running state parameter of the vehicle; and determining the cooperative play action of each sound source based on the distribution information, and controlling each sound source to execute the corresponding cooperative play action so as to form a target sound wave in the vehicle. Therefore, the problem of sound fault caused by the fact that the robustness of an algorithm and a hardware system of the existing particle synthesis method is low and cooperative control of multiple sound sources cannot be achieved in the related technology is solved.

Inventors

  • ZHANG XUEQING

Assignees

  • 中国第一汽车股份有限公司

Dates

Publication Date
20260508
Application Date
20250929

Claims (10)

  1. 1. The method for synthesizing the active sound waves in the vehicle is characterized by comprising the following steps of: Collecting at least one running state parameter of the vehicle; Determining distribution information of a plurality of sound sources for simulating engine sounds based on the at least one running state parameter; And determining the cooperative play action of each sound source based on the allocation information, and controlling each sound source to execute the corresponding cooperative play action so as to form target sound waves in the vehicle.
  2. 2. The method of claim 1, wherein the determining allocation information of a plurality of sound sources for simulating engine sounds based on the at least one driving state parameter comprises: determining a current operating condition of the vehicle based on the at least one running state parameter; And determining the allocation information of each sound source based on the current working condition and a pre-established sound sample library.
  3. 3. The method of claim 2, further comprising, prior to determining the allocation information for each of the sound sources: Selecting a sound sample according to a target period of an engine harmonic signal of the vehicle; And establishing the sound sample library based on the sound samples.
  4. 4. The method of claim 1, wherein the determining a co-play action for each sound source based on the allocation information comprises: Determining the output power of the driving motor based on the actual opening of the accelerator pedal to generate an amplitude control action; And generating an analog audio signal based on the distribution information and the amplitude control action, and obtaining a digital code stream based on the analog audio signal to mix sound so as to generate the cooperative play action of at least part of sound sources.
  5. 5. The method of claim 4, wherein the determining a co-play action for each sound source based on the allocation information further comprises: setting a frequency shift change range in the frequency shift to perform frequency control and frequency shift, so that when sound is played, a preset storage space is adopted to play data and a preset time period is delayed.
  6. 6. An in-vehicle active acoustic wave synthesizing apparatus, comprising: the acquisition module is used for acquiring at least one running state parameter of the vehicle; A determining module for determining distribution information of a plurality of sound sources for simulating engine sound based on the at least one running state parameter; and the synthesis module is used for determining the cooperative play action of each sound source based on the distribution information and controlling each sound source to execute the corresponding cooperative play action so as to form target sound waves in the vehicle.
  7. 7. The apparatus of claim 6, wherein the means for determining comprises: The first determining unit is used for determining the current working condition of the vehicle based on the at least one running state parameter; And the second determining unit is used for determining the allocation information of each sound source based on the current working condition and a pre-established sound sample library.
  8. 8. A vehicle comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor executing the program to implement the in-vehicle active acoustic wave synthesis method of any one of claims 1-5.
  9. 9. A computer-readable storage medium, on which a computer program is stored, characterized in that the program is executed by a processor for implementing the in-vehicle active acoustic wave synthesis method according to any one of claims 1-5.
  10. 10. A computer program product comprising a computer program to be executed for implementing the in-vehicle active acoustic wave synthesis method according to any of claims 1-5.

Description

Method and device for synthesizing active sound waves in vehicle and vehicle Technical Field The application relates to the technical field of vehicle sound wave synthesis, in particular to an in-vehicle active sound wave synthesis method and device and a vehicle. Background The particle synthesis method is a method commonly used by active acoustic waves of automobiles, and is characterized by collecting engine sound samples of the automobiles under different working conditions (such as different engine revolutions, throttle loads and gears), and then extracting short sound particles (usually lasting 10-100 milliseconds) from sound tracks for overlapping and splicing. In the related art, the existing particle synthesis method adopts a method of selecting one sound sample for playing under each working condition, and when the synthesized sound is played back through an in-car sound system, a real-time playing method is adopted. However, in the related art, although the existing particle synthesis method has high instantaneity and small sound delay in the driving process, the robustness of the algorithm and the hardware system is low, and the cooperative control of multiple sound sources cannot be realized, so that problems such as sound fault and the like are caused, and improvement is needed. Disclosure of Invention The application provides an in-vehicle active sound wave synthesis method, an in-vehicle active sound wave synthesis device and a vehicle, and aims to solve the problems that in the related art, due to the fact that the robustness of an algorithm and a hardware system of an existing particle synthesis method is low, and the cooperative control of multiple sound sources cannot be achieved, sound faults and the like are solved. An embodiment of a first aspect of the present application provides an in-vehicle active acoustic wave synthesizing method, including the steps of collecting at least one running state parameter of a vehicle, determining allocation information of a plurality of sound sources for simulating engine sound based on the at least one running state parameter, determining a cooperative play action of each sound source based on the allocation information, and controlling each sound source to execute a corresponding cooperative play action so as to form a target acoustic wave in the vehicle. Through the technical means, the embodiment of the application can accurately determine the distribution information of the multi-engine sound simulation sound sources by collecting the real-time running state parameters of the vehicle, and further plan the cooperative play action of each sound source and control the execution based on the distribution information, so that the target sound waves generated in the vehicle can be highly synchronous with the actual running state (such as rotating speed, torque, vehicle speed and the like) of the vehicle, the violation and sense of the uncoupling of the sound waves and the working conditions can be avoided, the sound waves can be ensured to have the layering sense and dynamic expression of fitting the actual driving scene through the cooperation of the multi-sound sources, and the accuracy and the immersion sense of the engine sound simulation can be effectively improved, and the hearing experience conforming to the running logic of the vehicle can be created for passengers. Optionally, in one embodiment of the present application, the determining the allocation information of the plurality of sound sources for simulating the engine sound based on the at least one driving state parameter includes determining a current working condition of the vehicle based on the at least one driving state parameter, and determining allocation information of each sound source based on the current working condition and a pre-established sound sample library. Through the technical means, the embodiment of the application can accurately identify the current working condition by combining the real-time running state parameters of the vehicle, and match the distribution information of each sound source according to the pre-established sound sample library, so that the engine sound simulated by multiple sound sources is highly synchronous with the actual running state of the vehicle, the physical characteristics of the sound waves attached to different working conditions (such as idling, accelerating and cruising) are ensured, the real driving hearing experience is restored, the precision and the high efficiency of the sound source distribution can be realized by relying on the standardized sample library, the violation and the sense of the uncoupling of the sound waves and the working conditions are avoided, meanwhile, the adaptation foundation is laid for the cooperative synthesis and the mixing processing of the subsequent multiple sound sources, and the reliability and the immersion of the whole sound wave simulation system are improved. Optionally, in one embodiment of