Abstract
Loudspeaker characteristics can have an appreciable influence on the sound absorption properties
obtained with CEN/TS 1793-5 [1]. Although sound sources with omnidirectional radiation properties
are favored, these often hold the problem of long impulse responses due to their design potentially incorporating
ports [2]. In this paper, the inverse filtering approach is applied to two different sound sources. It
is shown that it is a valuable measure to reduce the influence of the loudspeaker characteristics on the
obtained sound absorption values.
Furthermore, an attempt is made to measure the absorption properties according to CEN/TS 1793-5
without the need for the subtraction procedure of a free-field measurement. Thereby, as long as only high
frequencies are considered, reasonable values can be obtained.
Originalsprache | Englisch |
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Seiten (von - bis) | 631-639 |
Seitenumfang | 9 |
Fachzeitschrift | Applied Acoustics |
Publikationsstatus | Veröffentlicht - 2012 |
Research Field
- Ehemaliges Research Field - Mobility Systems
Schlagwörter
- Sound absorption
- Traffic Noise
- Noise Barriers
- Short impulse response
- MLS
- Inverse filtering