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다중 다공판 시스템에서 직관요소에 대한 전기음향등가회로법의 오류The Error Involved in the Equivalent Electroacoustic Circuit Approachfor the Element of Straight Pipe in Multiple Layer Perforated Plate Systems
- Other Titles
- The Error Involved in the Equivalent Electroacoustic Circuit Approachfor the Element of Straight Pipe in Multiple Layer Perforated Plate Systems
- Issue Date
- Mar-2003
- Publisher
- 한국소음진동공학회
- Keywords
- Acoustic Impedance(음향임피던스); Equivalent Electroacoustic Circuit Approach(전기음향등가회로법); Perforated Plate System(다공판 시스템); Porous Sound Absorbing Material(다공성 흡음재); Sound Absorption Coefficient(흡음계수); Acoustic Impedance(음향임피던스); Equivalent Electroacoustic Circuit Approach(전기음향등가회로법); Perforated Plate System(다공판 시스템); Porous Sound Absorbing Material(다공성 흡음재); Sound Absorption Coefficient(흡음계수)
- Citation
- 한국소음진동공학회논문집, v.13, no.3, pp.4 - 185
- Journal Title
- 한국소음진동공학회논문집
- Volume
- 13
- Number
- 3
- Start Page
- 4
- End Page
- 185
- ISSN
- 1598-2785
- 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.
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