Wind noise control method and device for vehicle

A control method and wind noise technology, which is applied to vehicle components, transportation and packaging, and sound-generating equipment, etc., to achieve the effects of low development cost, short development cycle and debugging cycle, and small modification requirements

Pending Publication Date: 2020-10-09
COLSONIC SUZHOU ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the patent document CN107195294 provides an active noise reduction method and device for vehicles, the method is aimed at the active control of the environmental noise transmitted to the interior and exterior of the vehicle through the open window, and the method reduces the noise outside the vehicle. ambient noise

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  • Wind noise control method and device for vehicle
  • Wind noise control method and device for vehicle
  • Wind noise control method and device for vehicle

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Embodiment Construction

[0055] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention.

[0056] This embodiment provides a wind noise control method for vehicles, which will be combined below figure 1 The method is described in detail.

[0057] 1. Determine the position of the microphone.

[0058] Arrange the microphones according to the distribution of the noise field. The basis for the layout of the microphone is: the amplitude of the noise field at this position is relatively large; the acoustic radiation response gain from the door panel speaker to the microphone is relatively large, and will not be affected by the acoustic field mode...

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Abstract

The invention discloses a wind noise control method and device for a vehicle.The wind noise control method comprises the following steps of: S1, sampling vehicle window opening degree information in real time or regularly; S2, calculating the inherent frequency of a Helmholtz resonator formed by the carriage and the vehicle window according to the vehicle window opening degree information; S3, determining whether a wind vibration noise modal mark signal is generated or not according to the inherent frequency, and executing the following step S4 when the wind vibration noise modal mark signal is generated; S4, generating a reference signal according to the inherent frequency, updating filter parameters according to the reference signal and a noise signal in the vehicle, and outputting a stable control signal; and S5, driving a loudspeaker to generate an active control sound field according to the stable control signal, and coherently superposing the active control sound field with a noise field. The active noise reduction mode is adopted to solve the problem of wind vibration noise, and the vehicle structure does not need to be changed excessively.

Description

technical field [0001] The invention belongs to the technical field of vehicle noise reduction, and relates to a wind noise control method and device for vehicles. Background technique [0002] Noise is a key issue in automotive NVH (Noise, Vibration, Harshness). At present, the application of active control to reduce the noise inside the car has become a hot topic. But the current research is mainly concerned with the problem of noise control in the sealed car interior. However, in the actual driving environment, the drivers and passengers in the car often open the windows for ventilation. At this time, there will be relatively obvious noise, which is called wind buffeting noise, or wind noise for short. [0003] The principle of wind vibration noise is as follows: when the window is opened, a cavity is formed in the compartment; when the car is driving at high speed, a shear layer is formed between the airflow flowing at high speed outside the car and the relatively stil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/178B60R16/037
CPCB60R16/0373G10K11/17815G10K11/17854G10K11/17883
Inventor 沐永生马登永叶超蔡野锋
Owner COLSONIC SUZHOU ELECTRONICS CO LTD
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