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Noise reduction method in vehicle cab and acoustic noise elimination structure

A technology for vehicle driving and acoustics, which is applied to the superstructure, vehicle components, chemical instruments and methods, etc., can solve the problems of high cost, heavy workload, complicated acoustic package structure, noise transmission path and noise source testing and analysis work, etc. Achieve the effect of reducing development costs and workload

Pending Publication Date: 2021-03-05
BYD CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present invention provides a noise reduction method in the cab of a vehicle to solve the problem that the determination of the structure of the acoustic package needs to carry out more complicated testing and analysis of the noise transmission path and the noise source, the workload is relatively large, and the problem of cost is high.

Method used

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  • Noise reduction method in vehicle cab and acoustic noise elimination structure
  • Noise reduction method in vehicle cab and acoustic noise elimination structure
  • Noise reduction method in vehicle cab and acoustic noise elimination structure

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Embodiment Construction

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0019] In one embodiment, as figure 1 As shown, a method for noise reduction in a vehicle cab is provided, comprising the steps of:

[0020] S10: Collect noise data corresponding to noise source points, noise test points, and noise transmission points corresponding to the driving state.

[0021] Wherein, the noise source point refers to the vehicle noise source, which includes but not limited to engine, hub, motor controller, transmission and other no...

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Abstract

The invention discloses a noise reduction method in a vehicle cab and an acoustic noise elimination structure. The noise reduction method in the vehicle cab comprises the steps: collecting noise datacorresponding to a noise source point, a noise test point and a noise transmission point corresponding to a driving state; performing spectrum conversion on the noise data to obtain a spectrum corresponding to the noise data; based on the frequency spectrum corresponding to the noise data, performing path transmission analysis on the noise data, and determining a target transmission path; determining a noise elimination structure according to the target transmission path; and acoustically wrapping a target sound source point corresponding to the target transmission path by adopting the noise elimination structure to realize noise reduction. According to the method, control can be carried out on a noise transmission path, noise transmission is blocked, and noise reduction is achieved.

Description

technical field [0001] The invention relates to the field of automobile acoustic packaging, in particular to a noise reduction method and an acoustic noise reduction structure in a vehicle cab. Background technique [0002] With the improvement of living conditions, drivers and passengers and other drivers and passengers have higher and higher requirements for driving experience, and higher and higher requirements for the indoor noise level of vehicles. In the current vehicle indoor noise formation process, the noise emitted by the noise source point (i.e. the noise source) on the vehicle is transmitted to the vehicle interior through the noise transfer point (i.e. the noise transfer medium), so that the drivers and passengers can hear the corresponding noise. . Since there are multiple noise source points and multiple noise transmission points, the noise from multiple noise source points is transmitted to the vehicle interior through different noise transmission paths. De...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/178G10K11/168B60R13/02B32B15/20B32B15/14B32B17/02B32B17/06B32B27/40B32B27/12B32B27/06B32B25/04
CPCG10K11/17861G10K11/17813G10K11/17873G10K11/168B60R13/02B32B15/20B32B15/14B32B5/02B32B17/061B32B5/18B32B27/12B32B27/06B32B25/045B32B25/042B60R2013/0287G10K2210/1282B32B2605/08B32B2307/102B32B2262/101B32B2307/304B32B2266/0278B32B2266/02
Inventor 赵永吉孙亚轩严竹芳
Owner BYD CO LTD
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