A quantitative analysis of uncertainties within transfer function based impedance tube methods

Authors
Pitney, Theodore
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Other Contributors
Xiang, Ning
Braasch, Jonas
Markov, Ivan
Issue Date
2013-08
Keywords
Architectural sciences
Degree
MS
Terms of Use
This electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.
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Abstract
Measuring the acoustical properties of materials including the surface impedance, the propagation coefficient and the characteristic impedance within a controlled, testable environment is essential to understanding and shaping acoustical environments. In recent years, a three-microphone impedance tube measurement technique has been explored. This project pursues a quantitative analysis of uncertainties within this normal incident in-duct testing method. Investigations are conducted on both the methodical difficulties that produce ambiguous data and the statistical degrees to which uncertain results are affected. As a possible solution, a method of determining acoustic distances between microphones using Bayesian inference is introduced and compared to existing methods.
Description
August 2013
School of Architecture
Department
School of Architecture
Publisher
Rensselaer Polytechnic Institute, Troy, NY
Relationships
Rensselaer Theses and Dissertations Online Collection
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