A new sound metric for impact sound is developed based on the continuous wavelet transform (CWT), a useful tool for the analysis of non-stationary signals such as impact noise. Together with new metric, two other conventional sound metrics related to sound modulation and fluctuation are also considered. In all, three sound metrics are employed to develop impact sound quality indexes for several specific impact courses on the road. Impact sounds are evaluated subjectively by 25 jurors. The indexes are verified by comparing the correlation between the index output and results of a subjective evaluation based on a jury test. These indexes are successfully applied to an objective evaluation for improvement of the impact sound quality for cases where some parts of the suspension system of the test car are modified.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Improvement of impact noise in a passenger car utilizing sound metric based on wavelet transform


    Additional title:

    Verbesserte Sekung des Lärmpegels bei Personenkraftwagen mit einem fundierten auf Wavelet-Transformation basierenden Bewertungsverfahren


    Contributors:
    Lee, Sang-Kwon (author) / Kim, Ho-Wuk (author) / Na, Eun-Woo (author)

    Published in:

    Journal of Sound and Vibration ; 329 , 17 ; 3606-3619


    Publication date :

    2010


    Size :

    14 Seiten, 15 Bilder, 5 Tabellen, 17 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English