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1526 IEEE TRANSACTIONS ON SYSTEMS, MAN, AND CYBERNETICS--PART B: CYBERNETICS, VOL. 34, NO. 3, JUNE 2004 Enhanced Sound Localization
 

Summary: 1526 IEEE TRANSACTIONS ON SYSTEMS, MAN, AND CYBERNETICS--PART B: CYBERNETICS, VOL. 34, NO. 3, JUNE 2004
Enhanced Sound Localization
Bob Mungamuru and Parham Aarabi, Member, IEEE
Abstract--A new approach to sound localization, known as en-
hanced sound localization, is introduced, offering two major ben-
efits over state-of-the-art algorithms. First, higher localization ac-
curacy can be achieved compared to existing methods. Second, an
estimate of the source orientation is obtained jointly, as a conse-
quence of the proposed sound localization technique. The orienta-
tion estimates and improved localizations are a result of explicitly
modeling the various factors that affect a microphone's level of ac-
cess to different spatial positions and orientations in an acoustic
environment. Three primary factors are accounted for, namely the
source directivity, microphone directivity, and source-microphone
distances.
Using this model of the acoustic environment, several different
enhanced sound localization algorithms are derived. Experiments
are carried out in a real environment whose reverberation time is
0.1 seconds, with the average microphone SNR ranging between
1020 dB. Using a 24-element microphone array, a weighted ver-

  

Source: Aarabi, Parham - Department of Electrical and Computer Engineering, University of Toronto

 

Collections: Computer Technologies and Information Sciences