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    Using Hand-Held Arrays for Automotive NVH Measurements

    Using Hand-Held Arrays for Automotive NVH Measurements


    The use of single- and double-layer microphone arrays, both hand held as well as robot operated, has been greatly extended within the last decade. This article summarizes how a small double-layer array with typically 128 microphones can be used for interior cabin measurements for mapping various acoustical properties. There are four major applications. The first is general patch holography (or conformal mapping) of basic acoustical quantities like sound pressure, particle velocity and sound intensity. Additionally, sound quality (SQ) metrics for describing human annoyance like loudness, sharpness, fluctuation strength and roughness etc. can also be mapped. Other applications are: in-situ absorption measurements - for example, inside a car cabin; intensity component analysis (incident, scattered, radiated, net intensity etc. can be separated); and finally sound pressure contribution from various panels inside the cabin to the driver's position. Some measurements are done in operational conditions, and some are reference laboratory measurements of typical frequency response functions.

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    Titel :

    Using Hand-Held Arrays for Automotive NVH Measurements

    Weitere Titelangaben:

    Einsatz tragbarer Mikrophon-Arrays zur Messung von Fahrzeuggeräuschen

    Beteiligte:
    Gade, Svend (Autor:in) / Gomes, Jesper (Autor:in) / Hald, Jörgen (Autor:in)
    Erschienen in:

    Sound and Vibration ; 48 , 3 ; 12-16

    Erscheinungsdatum :

    2014

    Format / Umfang :

    5 Seiten, Bilder, Tabellen, 15 Quellen

    ISSN :

    1541-0161

    Medientyp :

    Aufsatz (Zeitschrift)

    Format :

    Print

    Sprache :

    Englisch

    Schlagwörter :

    akustische Holographie , Fahrzeuggeräusch , Geräuschanalyse , Geräuschmessung , Insassenbelastung , konforme Abbildung , Mikrophon , Sensor-Array , Handgerät , Nahfeld

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