A method for estimating the orientation of a directional sound source from source directivity and multi-microphone recordings: principles and application

Francesco Guarato, Lasse Jakobsen, Dieter Vanderelst, Annemarie Surlykke, John Hallam

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Abstrakt

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.
OriginalsprogEngelsk
TidsskriftAcoustical Society of America. Journal
Vol/bind129
Udgave nummer2
Sider (fra-til)1046-58
Antal sider13
ISSN0001-4966
DOI
StatusUdgivet - 2011

Fingeraftryk

Dyk ned i forskningsemnerne om 'A method for estimating the orientation of a directional sound source from source directivity and multi-microphone recordings: principles and application'. Sammen danner de et unikt fingeraftryk.

Citationsformater