Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)
- 2002.11b
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- Pages.902-907
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- 2002
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- 1598-2548(pISSN)
A Study on the Sound Absorbing Performance of Parallel Perforated Plate Systems
병렬 다공판 시스템의 흡음성능에 관한 연구
- Published : 2002.11.01
Abstract
An equivalent electroacoustic circuit approach of estimating the sound absorption coefficient for parallel perforated plate system is proposed. The proposed approach is validated by comparing the calculated absorption coefficients of a parallel single layer perforated plate system with the values measured by the two-microphone impedance tube method for various porosity and the number of perforated plate. The sound absorbing performances of parallel and series perforated plate systems are compared and discussed from a standpoint of frequency bandwidth with sound absorption. The proposed approach is further extended to the parallel double layer perforated plate system.
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