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Acoustic Signal Localization and Estimation Method for the Number of Speakers in Mixed Speech Signals for Security System
Journal of Knowledge Information Technology and Systems
Abbr :
JKITS
2011, 6(6), pp.157-163
Publisher : Korea Knowledge Information Technology Society
Research Area : Interdisciplinary Research
2011, 6(6), pp.157-163
Publisher : Korea Knowledge Information Technology Society
Research Area : Interdisciplinary Research
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This paper is a study on acoustic signal localization and estimation method of speaker number in mixed speech signals radiated to many speakers for security system. A proposed system of acoustic signal localization has reduced a complexity of calculation on sound arrival time-gap between microphones using geometry structure and NCC(Normalized Cross Correlation). Additionally, we allow for economic terms using two low price sound card and four condenser microphones. And then, sound features is abstracted for confirmation of speaker number using a property (that) it have notable modulation pattern that intensity envelope of purest sound signal can be determined around the 4~5Hz for speaker number estimation in mixed sound signal and we estimate speaker numbers using GMM.
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