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.


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    Titel :

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


    Weitere Titelangaben:

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


    Beteiligte:
    Lee, Sang-Kwon (Autor:in) / Kim, Ho-Wuk (Autor:in) / Na, Eun-Woo (Autor:in)

    Erschienen in:

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


    Erscheinungsdatum :

    2010


    Format / Umfang :

    14 Seiten, 15 Bilder, 5 Tabellen, 17 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch