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Comparison of Human Responses to Transportation Noise in Monaural and Binaural Hearing, Part I: Measurement and Analysis

교통소음의 모노럴과 바이노럴 청감 비교 연구 I: 측정 및 분석

  • 김재환 (서울대학교 기계항공공학부) ;
  • 임창우 (서울대학교 기계항공공학부) ;
  • 정원태 (서울대학교 기계항공공학부) ;
  • 홍지영 (서울대학교 기계항공공학부) ;
  • 정완섭 (한국표준과학연구원) ;
  • 이수갑 (서울대학교 기계항공공학부)
  • Published : 2004.12.01

Abstract

Measurement of noise is not only to know the information of acoustic pressure but to assess human response to noise. To find human response to transportation noise through the laboratory study we have to measure and reproduce noise. The method of noise reproduction is largely divided into monaural and binaural techniques. But human fundamentally hears sound through both ears, referred as binaural hearing. Binaural signal is different from monaural signal because it includes more information of physical phenomena like acoustical reflection, diffraction and refraction. Especially head and pinna play an important role in perceiving change of signal origin. So, the amplitude of binaural signal is higher than that of monaural signal and spectrum of both signals is discriminated. Most of assessment and regulation of transportation noise are, however, based on monaural measurement techniques. The quantitative difference between monaural and binaural measurement is investigated in this study. Comparison on several transportation noisesshows defect of information in monaural measurements.

Keywords

References

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