Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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A Study on BSR Noise and Sound Quality Property for Vehicle Interior Module

자동차 인테리어 모듈의 BSR 소음과 음질 특성 연구

  • 신수현 (울산테크노파크 자동차부품기술연구소) ;
  • 정철웅 (부산대학교 기계공학부) ;
  • 정성수 (한국표준과학연구원 기반표준부) ;
  • 강대환 (울산테크노파크 자동차부품기술연구소)
  • Received : 2012.03.27
  • Accepted : 2012.05.07
  • Published : 2012.06.20
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Abstract

Among the various elements affecting a customer's evaluation of automobile quality, buzz, squeak and rattle(BSR) have been considered to be major factors. In most vehicle manufacturers, the BSR problems are solved by find-fix method with the vehicle road test, mainly due to various excitation sources, complex generation mechanism and subjective response. To systematically tackle the BSR problems in early stage of the vehicle development cycle, these difficulties should be resolved. The aim of the present paper is to characterize the sound quality property of BSR noise that can be used to assess the subjective responses to BSR. The four sound metrics from Zwicker's sound quality parameter are computed for the signals recorded for eight BSR noise source regions localized by using the acoustic-field visualized results. Then, the jury test of BSR noise are performed. On the basis of the computed sound metrics and jury test result is evaluated to represent the harshness of BSR noise. It is expected that the developed BSR measuring system and sound quality properties can be used to reduce the automotive interior BSR noise in terms of subjective levels as well as objective levels.

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References

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