| The in-depth contents |
| Publication year |
1994 |
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| Title |
Acoustic properties of permeable membranes |
| Author |
Daiji TAKAHASHI,Kimihiro SAKAGAMI,Masayuki MORIMOTO
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| Summary |
Membranes used for building materials have a certain degree of acoustic permeabilityEwhich has been disregarded in general membrane-vibration theoryEan d may cause serious effects especially on the acoustic properties. In this studyEa theory for sound absorption and sound transmission of a single permeable membrane is presented. SubsequentlyEsound absorption of structures composed of air layersEabsorptive layers and the facings of membranes is investigated theoreticallyEand discussed in comparison with the experimental data measured by using the reverberation room method. The results are fairy in good agreementEthen the present theory will give an effective tool for prediction of the acoustic properties of this type of membrane structures.
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