Abstract
A standard type of sound absorbing ceiling elements manufactured by DAMPA,
Denmark, is constructed of a perforated metal plate, a thin plastic
membrane, and a layer of mineral wool. Tests made by the manufacturer indicated
that although the mineral wool was removed, the sound absorption
of the elements was preserved to a certain extent. In order to investigate
the sound absorbing properties of this new type of element the absorption
coefficients for a large number of test specimens were measured
in an impedance tube. Based on the measurement results a simple theoretical
model describing the sound absorbing properties was developed.
Denmark, is constructed of a perforated metal plate, a thin plastic
membrane, and a layer of mineral wool. Tests made by the manufacturer indicated
that although the mineral wool was removed, the sound absorption
of the elements was preserved to a certain extent. In order to investigate
the sound absorbing properties of this new type of element the absorption
coefficients for a large number of test specimens were measured
in an impedance tube. Based on the measurement results a simple theoretical
model describing the sound absorbing properties was developed.
| Originalsprog | Engelsk |
|---|---|
| Titel | Proceedings of Inter-Noise 1983 |
| Publikationsdato | 1983 |
| Status | Udgivet - 1983 |
| Udgivet eksternt | Ja |
| Begivenhed | Inter-Noise1983 - Edinburgh, Storbritannien Varighed: 13 jul. 1983 → 15 jul. 1983 |
Konference
| Konference | Inter-Noise1983 |
|---|---|
| Land/Område | Storbritannien |
| By | Edinburgh |
| Periode | 13/07/1983 → 15/07/1983 |