Research on localization of the source of cyclostationary sound field

Chen Zhi-Min; Zhu Hai-Chao; Mao Rong-Fu

doi:10.7498/aps.60.104304

Abstract

The conventional planar near-field acoustic holography technology cannot exactly refecact the modulation characteristics of cyclostationary sound field radiated from the rotating machineries,and the spurious energy distribution of sidebands exists in its hologram. When the cyclic spectral density (CSD), instead of the energy spectrum of sound pressure is adopted as a reconstructed physical quantity, the modulating wave and carrier wave components of the cyclostationary sound field can be extracted exactly. Focusing on the complicated nature of calculation and the accuracy of feature extracting, the CSD gathering slice method is proposed, and the effect of the additive white noise on the reconstruction is analyzed. The results of the simulation and experiments show that the method has the better anti-noise performance and sound source can be localized exactly.

Keywords:

Authors and contacts

1.
Institute of Noise and Vibration, Naval University of Engineering, Wuhan 430033, China

References

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Cited By

[1]	Maynard J D, Williams E G, Lee Y 1985 J. Acoust. Soc. Am. 78 1395
[2]	Veronesi W A, Maynard J D 1987 J. Acoust. Soc. Am. 81 1307
[3]	Randall R B, Antoni J, Chobsaard S 2000 ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings 6 3882
[4]	Randall R B, Antoni J, Chobsaard S 2001 Mechanical Systems and Signal Processing 15 945
[5]	Antoniadis I, Glossiotis G 2001 Journal of Sound and Vibration, 248 829
[6]	万泉、蒋伟康 2005 声学学报 30 379
[7]	Roberts R S, Brown W A, Loomis H H 1991 Computationally efficient algorithms for cyclic spectral analysis. Signal Processing 4 38
[8]	Schell S V 1995 IEEE Trans. Signal Processing 43 173
[9]	于宏毅、保铮 1999 西安电子科技大学学报 26 133
[10]	Timar P L, Fazekas A, Kiss J 1989 Amsterdam: Elsevier Science Publishers

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Catalog

Vol. 60, Issue 10 - 2011-05-20

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