In this thesis, we developed the sound quality index in vehicles by analyzing an objective measurement and a subjective evaluation data with statistical method. In order to develop the sound quality index for interior noise, objective measurement of v...
In this thesis, we developed the sound quality index in vehicles by analyzing an objective measurement and a subjective evaluation data with statistical method. In order to develop the sound quality index for interior noise, objective measurement of vehicles driving in acceleration was measured. Simultaneously, subjective evaluation in 10-scale was performed by noise and vibration engineers. Also, the correlation analysis of psycho-acoustic parameters was performed based on objective measurement and subjective evaluation. The most critical factors at wide open test condition were adopted. Next, the new equation of sound quality index was derived through regression analysis of the factors. Finally, a testing was conducted in order to validate the effectiveness of the proposed index.