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http://dx.doi.org/10.5351/KJAS.2007.20.3.475

A Multivariate Analysis of Variance Applied to the Subjective Test of the Sound Quality of the Car Audio  

Choi, Kyung-Mee (College of Science and Technology, Hongik University)
Doo, Se-Jin (Division of Broadcasting Engineering, Donga Institute of Media and Arts)
Publication Information
The Korean Journal of Applied Statistics / v.20, no.3, 2007 , pp. 475-485 More about this Journal
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.
Keywords
Multivariate analysis of variance; characteristics of sound; subjective test of sound quality; orthogonal designs;
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