Title :
Adaptive echo compensation applied to the hands-free telephone problem
Author :
Hänsler, Eberhärd
Author_Institution :
Inst. fuer Netzwerk- und Signaltheorie, Tech. Hochschule, Darmstadt, West Germany
Abstract :
The requirements of a loudspeaker-enclosure-microphone system model are reviewed. It is shown that decoupling of the loudspeaker and the microphone requires an adaptive system with an impulse response of several-hundred-microsecond duration. Means to solve the adaptation problem are described
Keywords :
echo suppression; telephone sets; adaptation problem; decoupling; echo compensation; hands-free telephone problem; impulse response; loudspeaker-enclosure-microphone system model; Acoustic reflection; Adaptive systems; Communication switching; Eigenvalues and eigenfunctions; Loudspeakers; Matched filters; Microphones; Switches; Telephony; Transversal filters;
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
DOI :
10.1109/ISCAS.1990.112012
