Reciprocity can be used to diagnose the likely contribution of specific structureborne and airborne sources and paths to the interior noise of an automobile or aircraft well before a new design is completed. Consequently, the noise control engineer has more opportunity at an early stage of the vehicles development to propose minor structural changes in the source-structure interface which can result in substantial reduction of the interior noise. For example, questions such as the following can be readily addressed: Which engine mount transmits most of the structureborne energy? Which directions and mutual phasing of forces are most critical? How does the interior noise change if the suspension or engine mount configuration changes? The cost of a detailed reciprocity study, utilizing an early version or structurally complete mockup of the vehicle, usually costs much less than even the simplest road test or flight test. It is hoped that the diagnostic methods described in this article will reduce the need for such testing and that increased sophistication gained in using the experimental procedures may lead to situations where such tests are primarily used to confirm the validity of laboratory experiments, rather than for obtaining diagnostic data to initiate design changes.


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    Titel :

    Acoustic reciprocity for source-path-receiver analysis


    Weitere Titelangaben:

    Akustische Reziprozität für Quelle-Weg-Empfänger Analysen


    Beteiligte:
    Ver, I.L. (Autor:in) / Oliphant, R.W. (Autor:in)

    Erschienen in:

    Sound and Vibration ; 30 , 3 ; 14-17


    Erscheinungsdatum :

    1996


    Format / Umfang :

    4 Seiten, 6 Bilder, 4 Quellen



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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