| The in-depth contents |
| Publication year |
1994 |
| PDF |
Download |
| Title |
Acoustic properties of permeable membranes |
| Author |
Daiji TAKAHASHI,Kimihiro SAKAGAMI,Masayuki MORIMOTO
|
| Summary |
Membranes used for building materials have a certain degree of acoustic permeability・詣hich has been disregarded in general membrane-vibration theory・径n d may cause serious effects especially on the acoustic properties. In this study・径 theory for sound absorption and sound transmission of a single permeable membrane is presented. Subsequently・茎ound absorption of structures composed of air layers・径bsorptive layers and the facings of membranes is investigated theoretically・径nd discussed in comparison with the experimental data measured by using the reverberation room method. The results are fairy in good agreement・荊hen the present theory will give an effective tool for prediction of the acoustic properties of this type of membrane structures.
|