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Three-microphone probe bias errors for acoustic intensity and specific acoustic impedance.
- Source :
- Journal of the Acoustical Society of America; 2018, Vol. 143 Issue 2, pEL81-EL86, 6p
- Publication Year :
- 2018
-
Abstract
- In acoustic intensity estimation, adding a microphone at the probe center removes errors associated with pressure averaging. Analytical bias errors are presented for a one-dimensional, three-microphone probe for active intensity, reactive intensity, and specific acoustic impedance in a monopole field. Traditional estimation is compared with the Phase and Amplitude Gradient Estimator (PAGE) method; the PAGE method shows an increased bandwidth for all three quantities. The two- and three-microphone methods are compared experimentally, showing reduced bias errors with three-microphone PAGE for active and reactive intensity, whereas using two microphones is preferred for specific acoustic impedance. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00014966
- Volume :
- 143
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Journal of the Acoustical Society of America
- Publication Type :
- Academic Journal
- Accession number :
- 128247558
- Full Text :
- https://doi.org/10.1121/1.5022688