Phased microphone array method is used to separate and measure the noise produced by individual train wheels flashing by at over 220kph. Signal collected from a linear array of 21 microphones is analyzed using progressively varying time delays to point the array centerline to track point sources of noise on the fast-moving train. The analysis eliminated non-wheel noise, corrected for the Doppler shift and separately tracked the noise from each individual wheel and bogey.


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    Titel :

    Characterizing noise from individual wheels during train pass-by


    Erschienen in:

    Erscheinungsdatum :

    2000


    Format / Umfang :

    3 Seiten




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch






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