New configuration of echo canceller adaptable during double talk

19 November 1987

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 23 (24) , 1314-1316
https://doi.org/10.1049/el:19870909

Abstract

A three-port echo canceller (EC) is proposed. Observing signals on both the 4- and 2-wire paths, the new EC can track echo-path time variances even during double talk (DT), and requires no changeover at the beginning or end of DT, thus eliminating DT detection. The echo synthesiser possesses guaranteed stability without testing.

Keywords

ECHO-PATH TIME VARIANCES
THREE PORT CONFIGURATION
FOUR-WIRE PATHS
STABILITY
INVERSE LATTICE FILTER
DOUBLE TALK
2-WIRE PATHS
ECHO CANCELLER
SPEECH PROCESSING
ECHO SYNTHESISER

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