DocumentCode :
1363991
Title :
GMDF for noise reduction and echo cancellation
Author :
Lariviere, Jeff ; Goubran, Rafik
Author_Institution :
Dept. of Syst. & Comput. Eng., Carleton Univ., Ottawa, Ont., Canada
Volume :
7
Issue :
8
fYear :
2000
Firstpage :
230
Lastpage :
232
Abstract :
A noise-reduction (NR) enhancement to the generalized multi-delay frequency domain algorithm (GMDF) involving minimal additional computations is presented. Findings are presented on the ability of the algorithm to suppress street, office, air-conditioning and car noise from the microphone signal in hands-free telephony. For an additional eleven N/P real multiplies and eight N/P real additions per output sample, where N is the block size and P is the amount of output samples per GMDF iteration, results show an average increase in echo return loss enhancement (ERLE) of 9 dB at low SNR (-5 dB) and 6 dB at higher SNR (15 dB).
Keywords :
acoustic noise; acoustic signal processing; digital filters; echo suppression; frequency-domain analysis; iterative methods; speech enhancement; telephony; ERLE; GMDF; echo cancellation; echo return loss enhancement; generalized multi-delay frequency domain algorithm; hands-free telephony; iteration; microphone signal; noise reduction; Acoustic noise; Echo cancellers; Filters; Frequency domain analysis; Microphones; Noise cancellation; Noise reduction; Phase estimation; Signal to noise ratio; Working environment noise;
fLanguage :
English
Journal_Title :
Signal Processing Letters, IEEE
Publisher :
ieee
ISSN :
1070-9908
Type :
jour
DOI :
10.1109/97.855449
Filename :
855449
Link To Document :
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