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http://dx.doi.org/10.5050/KSNVN.2003.13.3.180

The Error Involved in the Equivalent Electroacoustic Circuit Approach for the Element of Straight Pipe in Multiple Layer Perforated Plate Systems  

이동훈 (서울산업대학교 기계공학과)
권영필 (숭실대학교 기계공학과)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.13, no.3, 2003 , pp. 180-185 More about this Journal
Abstract
The equivalent electroacoustic circuit approach has been conventionally used for the analysis of the multiple layer perforated plate system. However, it is found that an analogy error has been involved in the equivalent electroacoustic approach proposed by previous researchers for the element of straight pipe. Although the pipe between the perforated layers is a distributed element in the analogy, it has been treated as a parallel element by previous investigators. The analogy error is demonstrated by comparing the calculated absorption coefficients based on the parallel circuit and the distributed circuit, respectively, with the measured values by the two-microphone impedance tube method.
Keywords
Acoustic Impedance; Equivalent Electroacoustic Circuit Approach; Perforated Plate System; Porous Sound Absorbing Material; Sound Absorption Coefficient;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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