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International Journal of Automotive Technology 2005;6(4): 367-374. |
| DEVELOPMENT OF A SOUND QUALITY INDEX FOR THE EVALUATION OF BOOMING NOISE OF A PASSENGER CAR BASED ON REGRESSIVE CORRELATION |
| J. K. LEE1, Y. W. PARK2, J. B. CHAI2, H. K. JANG3 |
1GM Daewoo Auto & Technology
2Ajou University
3Institute for Advanced Engineering |
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| ABSTRACT |
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This paper proposes a sound quality index to evaluate the vehicle interior noise. The index was developed using a correlation analysis of an objective measurement and a subjective evaluation data. First, the objective set of measurements was obtained at two specified driving conditions. One is from a wide-open test condition and the other is from a constant-speed test condition. At the same time, subjective evaluation was carried out using a score of ten scale where 17 test engineers participated in the experiment. The correlation analysis between the psycho-acoustic parameters derived from the objective measurement and the subjective evaluation was performed. The most critical factors at both test conditions were determined, and the corresponding equations for the sound quality were obtained from the multiple factor regression method. Finally, a comparative work between previous index and present index was performed to validate the effectiveness of the proposed index. |
| Key Words:
Psycho-acoustic parameter, Sound quality index, Correlation analysis, Multiple factor regression |
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