DocumentCode
409825
Title
An echo path variation detector based on coherence
Author
Huo, Jiaquan ; Nordholm, Sven ; Zang, Zhuquan
Author_Institution
Western Australian Telecommun. Res. Inst., Curtin Univ. of Technol., Perth, WA, Australia
Volume
1
fYear
2003
fDate
15-18 Dec. 2003
Firstpage
124
Abstract
A low cost method for detecting echo path variation is proposed. A detection parameter is constructed by averaging the coherence function between the far-end signal and the error signal over time and frequency. The detection delay caused by the time averaging is accounted for by setting different detection thresholds for the rising and dropping edges of the detection parameter. Numerical examples show that the proposed method can reliably differentiate between echo path variation and double talk.
Keywords
acoustic signal detection; coherence; echo suppression; reliability; coherence function; double talk; echo path variation detector; reliability; Acoustic signal detection; Adaptive filters; Australia; Delay effects; Detectors; Echo cancellers; Finite impulse response filter; Frequency; Microphones; Speech;
fLanguage
English
Publisher
ieee
Conference_Titel
Information, Communications and Signal Processing, 2003 and Fourth Pacific Rim Conference on Multimedia. Proceedings of the 2003 Joint Conference of the Fourth International Conference on
Print_ISBN
0-7803-8185-8
Type
conf
DOI
10.1109/ICICS.2003.1292426
Filename
1292426
Link To Document