Direction of arrival estimation by cross-power spectrum phase analysis using prior distributions and voice activity detection information

Sound source localization is a pre-process for target detection, speech enhancement, and speech recognition. The cross-power spectrum phase (CSP) analysis using two microphones is known as an effective method of estimating the direction of arrival, how the accuracy of the CSP analysis decreases at l...

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Bibliographic Details
Published in:Acoustical Science and Technology 2012/01/01, Vol.33(1), pp.68-71
Main Authors: Tachioka, Yuuki, Narita, Tomohiro, Iwasaki, Tomohiro
Format: Article
Language:English
Subjects:
CSP analysis
DOA estimation
Noise robustness
Prior distributions
Sound source localization
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Summary:Sound source localization is a pre-process for target detection, speech enhancement, and speech recognition. The cross-power spectrum phase (CSP) analysis using two microphones is known as an effective method of estimating the direction of arrival, how the accuracy of the CSP analysis decreases at low SNR and owing to directional noise. In this article, the authors propose a CSP analysis using prior distributions of source direction and voice activity detection information in order to eliminate noise from CSP coefficients. Adapted from the source document
ISSN:1346-3969
1347-5177
DOI:10.1250/ast.33.68