The Korean Journal of Applied Statistics (응용통계연구)

The Korean Statistical Society (한국통계학회)
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A Multivariate Analysis of Variance Applied to the Subjective Test of the Sound Quality of the Car Audio

차량 음향 시스템의 음질평가를 위한 다변량 분산분석

  • Choi, Kyung-Mee (College of Science and Technology, Hongik University) ;
  • Doo, Se-Jin (Division of Broadcasting Engineering, Donga Institute of Media and Arts)
  • 최경미 (홍익대학교 과학기술대학) ;
  • 두세진 (동아방송예술대학 방송기술계열)
  • Published : 2007.11.30
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Abstract

In this work we measured and analyzed the subjective opinions of consumers towards the sound quality of car audios through a questionnaire. First of all, we chose eight controllable factors which had been known to affect the quality of reproduced sound. An orthogonal design of experiments was used to imitate the objective sound environments by reproducing the combinations of 8 sound characteristics, each with two levels. Then we defined 8 corresponding response variables to measure the subjective opinions towards the quality of reproduced sound. Finally, we applied the Multivariate Analysis of Valiance to explore the significant sound characteristics which affected the subjective opinions towards the quality of reproduced sound.

본 연구의 목적은 자동차오디오에서 재생된 음향의 음질에 대한 청취자의 주관적인 선호도를 객관화된 설문 등을 통하여 측정하고 그 결과를 통계적으로 분석하여 일반화시키는 것이다. 직교배열법을 사용하여 여덟 가지 음향특성들의 조합으로 이루어진 음향 환경을 객관적으로 재현하였으며, SD 7점 척도를 사용하여 청취자의 주관적 음질 선호도를 객관화시켰다. 재생된 음향의 음질에 대한 여러 청취자들의 선호도를 다변량 분산분석법을 이용하여 분석한 후, 일반적으로 전체 음질의 선호도를 결정짓는 음향특성을 찾아냈으며, 각각의 음질 선호도에 유의한 영향을 미치는 개별 음향 특성을 찾아내었다.

Keywords

References

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