NDLI: Audio signal delay estimation using partial whitening

Content Provider	IEEE Xplore Digital Library
Author	Donohue, K.D. Agrinsoni, A. Hannemann, J.
Copyright Year	2007
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Kentucky Univ., Lexington, KY (Donohue, K.D.)
Abstract	This work examines time and frequency domain implementations for estimating delays between acoustic signals arriving at spatially distributed microphones. A parametric variant of the phase-only transform (PHAT) is introduced for partially whitening the signal before estimating the delay. The PHAT variant is referred to as the PHAT-beta and is shown to be advantageous when processing signals corrupted by both independent noise and reverberation effects. Simulations show superior performance for the time-domain implementation under conditions of independent noise for time-limited broadband signals, achieving low estimation errors at signal-to-noise ratios 8 to 13 dB lower than that required for a frequency-domain implementation. Extensive Monte Carlo simulations are also performed for the time-domain delay estimator using the PHAT-beta on speech signals corrupted by reverberation and independent noise. Performance metrics include percent anomalous detections as well as the root mean square estimation error. Results show that partial whitening leads to significant improvements over zero or total whitening (as in the case of the standard PHAT). Simulations indicate that robust performance can be achieved for beta values near 0.4 when both reverberations and independent noises are present.
Starting Page	466
Ending Page	471
File Size	233157
Page Count	6
File Format	PDF
ISBN	1424410282
DOI	10.1109/SECON.2007.342946
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-03-22
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Delay estimation Reverberation Time domain analysis Signal to noise ratio Estimation error Frequency domain analysis Frequency estimation Delay effects Microphones Phase estimation
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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