Sound Quality Index Development of Electrically Powered Vehicle Roller Blind

차량용 전동 롤러 블라인드의 음질지수 개발

  • 성원찬 (서울대학교 대학원 기계항공공학부) ;
  • 조현호 (서울대학교 대학원 기계항공공학부) ;
  • 김성현 (현대자동차(주)) ;
  • 박동철 (현대자동차(주)) ;
  • 강연준 (서울대학교 기계항공공학부)
  • Published : 2014.10.29

Abstract

The purpose of this study is to identify the significant sound quality metric and compose the sound quality index of motor driven roller blind which is part of vehicle sunroof. Before subjective evaluation, sound characteristics of roller blind was analyzed and set the target operating sound for subjective evaluation. Thus, transfer sound of roller blind which has the characteristics of sound modulation was used for subjective evaluation. Linear regression was carried out by chosen Zwicker's metrics which are pointed by comments of jurors. Loudness and sharpness related metrics are prime metrics in sound quality index we composed. Effect of roller blind assay when it is attached to real vehicle was identified to evaluate the validity of index.

Acknowledgement

Supported by : 한국연구재단