DocumentCode
1457327
Title
A stable and distortion-free IIR echo and howling canceler
Author
Chao, Jinhui ; Tsujii, Shigeo
Author_Institution
Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Japan
Volume
39
Issue
8
fYear
1991
fDate
8/1/1991 12:00:00 AM
Firstpage
1812
Lastpage
1821
Abstract
The authors propose a configuration for an infinite impulse response (IIR) adaptive echo and howling canceller, which consists of a two-channel maximum entropy lattice filter and its inverse filter. The echo is canceled by the adaptive lattice filter, while the signal distortion is eliminated by the inverse lattice. With stability guaranteed without the necessity of testing, the structure costs O (N ) multiplications per sampling period. The algorithm can also be greatly simplified for white input cases
Keywords
adaptive filters; digital filters; echo suppression; telephone equipment; IIR filter; adaptive lattice filter; echo canceller; howling canceler; infinite impulse response; inverse filter; inverse lattice; stability; telephony; two-channel maximum entropy lattice filter; Adaptive filters; Costs; Distortion; Entropy; IIR filters; Lattices; Predistortion; Sampling methods; Stability; Testing;
fLanguage
English
Journal_Title
Signal Processing, IEEE Transactions on
Publisher
ieee
ISSN
1053-587X
Type
jour
DOI
10.1109/78.91152
Filename
91152
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