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Equivalent Level (L eq) of Noise Inside an Enclosure, Generated by Sources Moving Outside

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An analytical model is used to construct the relation between average intensity of sound field (equivalent level) inside any enclosure and parameters describing the energy penetrated into it. It is assumed that the outside field is generated by moving sources. Numerical examples are given to illustrate the applicability of derived formulae.


Um eine Beziehung herzustellen zwischen der mittleren Intensität eines Schallfeldes (äquivalenter Dauerschallpegel) innerhalb eines beliebigen Raumes und den Parametern, welche die in den Raum eindringende Energie beschreiben, wird ein analytisches Modell benutzt. Es wird angenommen, daß das Außenfeld durch sich bewegende Schallquellen erzeugt wird. Numerische Beispiele werden angegeben, um die Anwendbarkeit der abgeleiteten Formeln zu veranschaulichen.


Un modêle analytique permet de construira la relation entre l'intensité moyenne du champ sonore (le niveau équivalent L eq) à l'interieur d'un3 encainfcs quslcanqus et les paramètres qui décrivent l'énergie acoustique pénétrant dans cett3 enceinte. On suppose que le champ acoustique extérieur est produit par des sources en mouvement. Das exemples numériques illustrent les possibilités d'application des formules obtenues.
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Document Type: Research Article

Publication date: 1980-11-01

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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