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


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.


  1. 박석태 (1995). 자동차 오디오 시스템의 음질개선 연구, <한국소음진동공학회 추계학술대회 논문집>, 123-129
  2. 박석태, 김경환, 이종규 (1999). 차량주행소음을 고려한 자동차 오디오 음질 개선법 연구, 한국음향학회, <학술발표대회논문집>, 18, 274-277
  3. 박성현 (2003). <실험계획법>, 대영사, 서울
  4. 임도형 (1999). 제품의 음질특성에 관한 연구: 진공청소기에의 웅용, 한국과학기술원, 기계공학과 석사학위 논문, 대전
  5. Azzali, A., Bilzi, P., Carpanoni, E. and Farina, A. (2005). Comparison of different listening systems for speech intelligibility tests, Audio Engineering Society Convention, 118, Barcelona, Spain
  6. Farina, A. and Ugolotti, E. (1997a). Subjective comparison of different car audio systems by the auralization technique, Audio Engineering Society Convention, 103, New York,
  7. Farina, A. and Ugolotti, E. (1997b). Subjective evaluation of the sound quality in cars by the auralisation technique, Proceedings of 4th International Conference and Exhibition Comfort in the Automotive industry-Bologna, 4, Italy
  8. Ford, N., Rumsey, F. and Nind, T. (2002). Subjective evaluation of perceived spatial differences in car audio systems using a graphical assessment language, Audio Engineering Society Convention, 112, Munich, Germany
  9. Freeman, J. and Lessiter, J. (2001). Here, there, and everywhere: the effects of multichannel audio on presence, Proceedings of 2001 International Conference on Audio Display, Espoo, Finland
  10. Gabrielsson, A. and Sjogren, H. (1979). Perceived sound quality of hearing aids, Scandinavian Audiology, 8, 159-169
  11. Gabrielsson, A. and Hagerman, B. (1990). Perceived sound quality of reproductions with different frequency responses and sound levels, Journal of the Acoustical Society of America, 88, 1359-1366
  12. Johnson, R. and Wichern, D. (2002). Applied Multivariate Statistical Analysis, 5th ed., Pearson
  13. Krzanowski, W. (2000). Principles of Multivariate Analysis: A User's Perspective, Oxford, UK
  14. Letowski, T. (1989). Sound quality assessment: cardinal concepts, Journal of Audio Engineering Society, 37, 1062
  15. Mendenhall, W., Reinmuth, J. and Robert, J. (1993). Statistics for Management and Economics, Beaver Publisher
  16. Montgomery, D. (2004). Design and Analysis of Experiments, John Wiley & Sons, Inc
  17. Osgood, L. (1968). Method and Theory in Experimental Psychology, Oxford University Press, New York
  18. Rumsey, F. (2002). Spatial quality evaluation for reproduced sound: terminology, meaning, and a scene-based paradigm, Journal of Audio Engineering Society, 50, 651-667