Title :
An adaptation control for acoustic echo cancellers
Author :
Heitkamper, Peter
Author_Institution :
Tech. Hochschule Darmstadt, Germany
fDate :
6/1/1997 12:00:00 AM
Abstract :
Acoustic echo cancellation algorithms need a reliable adaptation control to cope with changing systems and nonstationary signals. A variable stepsize is proposed that is based on the detection of speakers´ activities, and involves estimates of system parameters and background noise. Real-time experiments demonstrate the workability in practice.
Keywords :
acoustic noise; acoustic signal detection; acoustic signal processing; adaptive control; adaptive filters; adaptive signal detection; echo suppression; filtering theory; noise abatement; parameter estimation; speech processing; acoustic echo cancellation algorithms; acoustic echo cancellers; adaptation control; adaptive filters; background noise; nonstationary signals; parameter estimation; real-time experiments; speaker activities detection; system parameters; variable stepsize; Acoustic signal detection; Adaptive filters; Background noise; Control systems; Echo cancellers; Finite impulse response filter; Parameter estimation; Speech analysis; Telephony; Workability;
Journal_Title :
Signal Processing Letters, IEEE
