TY - GEN
T1 - Measurement of sound absorbing properties under a plane-wave sound field reproduced by linear Loudspeaker array
AU - Zhang, Yankai
AU - Tan, Songbin
AU - Kuang, Zheng
AU - Wu, Ming
AU - Yang, Jun
PY - 2016
Y1 - 2016
N2 - In this paper, a new method for estimating the acoustic properties of sound absorbing material in-situ under reproduced plane wave sound field is proposed. The plane wave sound field is reproduced in front of the material surface by a linear loudspeaker array, and the standard transfer function method is used to measure acoustic impedance and absorption coefficient. Numerical simulation shows that this method can accurately measure absorption coefficient of materials with different flow resistivity values in the frequency range of 100-1600 Hz. Experiments are performed in a semi-anechoic chamber to examine the feasibility of the proposed method. Compared with the values obtained with the impedance tube method and two other existing in-situ measurement methods, the results demonstrate that the proposed method gives acceptable results over 300-1600 Hz.
AB - In this paper, a new method for estimating the acoustic properties of sound absorbing material in-situ under reproduced plane wave sound field is proposed. The plane wave sound field is reproduced in front of the material surface by a linear loudspeaker array, and the standard transfer function method is used to measure acoustic impedance and absorption coefficient. Numerical simulation shows that this method can accurately measure absorption coefficient of materials with different flow resistivity values in the frequency range of 100-1600 Hz. Experiments are performed in a semi-anechoic chamber to examine the feasibility of the proposed method. Compared with the values obtained with the impedance tube method and two other existing in-situ measurement methods, the results demonstrate that the proposed method gives acceptable results over 300-1600 Hz.
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M3 - Conference contribution
AN - SCOPUS:84987903827
T3 - ICSV 2016 - 23rd International Congress on Sound and Vibration: From Ancient to Modern Acoustics
BT - ICSV 2016 - 23rd International Congress on Sound and Vibration
PB - International Institute of Acoustics and Vibrations
T2 - 23rd International Congress on Sound and Vibration, ICSV 2016
Y2 - 10 July 2016 through 14 July 2016
ER -