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.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of Inter-Noise 1983 |
| Publication date | 1983 |
| Publication status | Published - 1983 |
| Externally published | Yes |
| Event | Inter-Noise1983 - Edinburgh, United Kingdom Duration: 13 Jul 1983 → 15 Jul 1983 |
Conference
| Conference | Inter-Noise1983 |
|---|---|
| Country/Territory | United Kingdom |
| City | Edinburgh |
| Period | 13/07/1983 → 15/07/1983 |