Title
A method for estimating the orientation of a directional sound source from source directivity and multi-microphone recordings : principles and application A method for estimating the orientation of a directional sound source from source directivity and multi-microphone recordings : principles and application
Author
Faculty/Department
Faculty of Applied Economics
Publication type
article
Publication
New York, N.Y. ,
Subject
Economics
Physics
Source (journal)
The journal of the Acoustical Society of America. - New York, N.Y.
Volume/pages
129(2011) :2 , p. 1046-1058
ISSN
0001-4966
ISI
000287709700051
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Taking into account directivity of real sound sources makes it possible to try solving an interesting and biologically relevant problem: estimating the orientation in three-dimensional space of a directional sound source. The source, of known directivity, produces a broadband signal (in the ultrasonic range, in this application) that is recorded by microphones whose position with respect to source is known. An analytical method to process the recorded signals and estimate source orientation is developed in this paper. Experiments testing method performance in estimating source orientation were performed both in a laboratory environment with a Polaroid transducer as source and in a flight room with a Myotis daubentonii bat. In the first case, results showed the estimation method to be accurate and pointed out its limitations. The latter case is significant as an example biological application of the method for extracting behavioral features from bats; results are compared with alternative calculations based on microphone root-mean-square (rms)-pressure values.
E-info
https://repository.uantwerpen.be/docman/iruaauth/6f081c/caae49a3d92.pdf
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