Experimental Investigation on Reconstructing Sound Reflection Coefficient by NAH in Finite Space

DOI

10.2991/iiicec-15.2015.356How to use a DOI?

Keywords

reflection coefficient; near-field acoustic holography (NAH); finite space; data preprocessing

Abstract

A pre-processing method for the holography measurement data is proposed to solve the problem caused by the multi-path interferences in finite space. In order to verify the effectiveness of this method, a standard steel plate is measured in an anechoic tank. The sound reflection coefficient of the steel plate is reconstructed by near-field acoustic holography (NAH) technology using the pre-processed data. The experimental results showed that: using the pre-processed data to reconstruct the sound reflection coefficient by NAH can effectively suppress the effect of multi-path interferences, and improve the measurement accuracy. And more, the requirements for the measurement environment are not very strict. Therefore, this pre-processing method will have broad application prospects.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yan Xiao
AU  - Xuecai Qiang
AU  - Dejiang Shang
AU  - Yongwei Liu
PY  - 2015/03
DA  - 2015/03
TI  - Experimental Investigation on Reconstructing Sound Reflection Coefficient by NAH in Finite Space
BT  - Proceedings of the 2015 International Industrial Informatics and Computer Engineering Conference
PB  - Atlantis Press
SP  - 1616
EP  - 1620
SN  - 2352-538X
UR  - https://doi.org/10.2991/iiicec-15.2015.356
DO  - 10.2991/iiicec-15.2015.356
ID  - Xiao2015/03
ER  -