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 |
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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 |
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Country/Territory | United Kingdom |
City | Edinburgh |
Period | 13/07/1983 → 15/07/1983 |