Acoustic performance of membrane absorbers
| Autor: | S. Sheng, W. Frommhold, H.V. Fuchs |
|---|---|
| Přispěvatelé: | Publica |
| Jazyk: | angličtina |
| Rok vydání: | 1994 |
| Předmět: |
Engineering
Absorption (acoustics) Acoustics and Ultrasonics Sound transmission class business.industry Mechanical Engineering Acoustics Acoustic wave Condensed Matter Physics law.invention Resonator Noise reduction coefficient Optics Computer Science::Sound Mechanics of Materials law Acoustic impedance business Helmholtz resonator Acoustic attenuation |
| Popis: | This paper is a report on the acoustic properties of absorbing elements, which consist of metal membranes and show good sound absorption at low and medium frequencies over more than one octave. The studies refer to the sound absorption coefficient and acoustic impedance at normal incidence of the sound waves. It is shown that the behaviour of the absorbing element is mainly determined by a combination of Helmholtz resonance and plate resonance. The parameters of the separate resonators are determined both by theory and experiment and serve as input data for a simplified calculation model, which can be used as an auxiliary tool for designing membrane absorber silencers. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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