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USE OF MICROPHONE DIRECTIVITY FOR THE LOCALLIZATION OF SOUND SOURCES

Tajari, Mahdi (2010) USE OF MICROPHONE DIRECTIVITY FOR THE LOCALLIZATION OF SOUND SOURCES. Master's Thesis, University of Pittsburgh. (Unpublished)

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Abstract

In a recent paper [1] the proof-of-concept of a novel approach for the localization of sound source was demonstrated. The method relies on the use of unidirectional microphones and amplitude-based signals' features to extract information about the direction of the incoming sound. By intersecting the directions identified by a pair of unidirectional microphones, the position of the emitting source can be identified.In this study we expand the work presented in that paper by assessing the effectiveness of the approach for the localization of an acoustic source in an indoor setting. As the method relies on the accurate knowledge of the microphones directivity, analytical expression of the acoustic sensors polar pattern were derived by testing them in an anechoic chamber. Then an experiment was conducted in a classroom-type environment by using an array of three unidirectional microphones. The ability to locate the position of a commercial speaker placed at different position is discussed.It is believed that this method may pave the road toward a new generation of reduced size sound detectors and localizers.

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Details

Item Type: University of Pittsburgh ETD
Status: Unpublished
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Tajari, Mahdimahdi_tajari@yahoo.com
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee MemberTo, Albertalbertto@pitt.eduALBERTTO
Committee MemberKoubaa, Amiramk59@pitt.eduAMK59
Committee MemberRizzo, Piervincenzopir3@pitt.eduPIR3
Date: 7 October 2010
Date Type: Completion
Defense Date: 10 May 2010
Approval Date: 7 October 2010
Submission Date: 18 May 2010
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Institution: University of Pittsburgh
Schools and Programs: Swanson School of Engineering > Civil and Environmental Engineering
Degree: MSCE - Master of Science in Civil Engineering
Thesis Type: Master's Thesis
Refereed: Yes
Uncontrolled Keywords: feature extraction; polar directivity patter; sound source localization; unidirectional microphone
Other ID: http://etd.library.pitt.edu/ETD/available/etd-05182010-175944/, etd-05182010-175944
Date Deposited: 10 Nov 2011 19:45
Last Modified: 15 Nov 2016 13:43
URI: http://d-scholarship.pitt.edu/id/eprint/7912

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