Acoustic Echo Cancellation Using Prediction Residual Signals

Authors:

Acker, C. ,  Vary, P. ,  Ostendarp, H.

Book Title:

Proceedings of European Conference on Speech Communication and Technology (EUROSPEECH)

Organization:

ESCA

Pages:

p.p. 1297-1300

Address:

Genova, Italy

Date:

Sep. 1991

Language:

English

Abstract

Adaptive echo cancellers are currently being studied for application to hands-free telephone sets with high speech quality. The major problem is the acoustic echo control from the loudspeaker to the microphone. This proposal presents a new concept by using linear prediction techniques in combination with a conventional adaptive echo canceller. Computer simulations show that the introduced algorithm improves significantly the performance compared to conventional methods. In this paper the new structure is described. A comparison of the results with the state of the art indicates that the complexity can be reduced by one third.

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