Document Detail

Experimental evaluation of flow-induced noise in level flight of the pigeon (Columba livia).
MedLine Citation:
PMID:  23862907     Owner:  NLM     Status:  In-Data-Review    
The experimental method employed in an anechoic wind tunnel to characterize flow-induced noise of the pigeon (Columba livia) during level flight is described in this letter. A live pigeon was managed to maintain a steady level flight at the wind tunnel test flow of 15 m/s. A microphone array was fabricated, and the conventional beamforming method was then adopted to yield the corresponding narrowband acoustic images and broadband sound pressure spectral results. The results justified the experimental method developed in this work. It can be seen that the flight noise of the pigeon is mostly from the wing tips. In addition, the spectral waveform of the pigeon flight suggests a slope of -20 dB/dec between 500 Hz and 5 kHz.
Qingkai Wei; Siyang Zhong; Xun Huang
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  134     ISSN:  1520-8524     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  2013 Jul 
Date Detail:
Created Date:  2013-07-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7503051     Medline TA:  J Acoust Soc Am     Country:  United States    
Other Details:
Languages:  eng     Pagination:  EL57-63     Citation Subset:  IM    
Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, 100871, Beijing, China,
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