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Acoustic Echo Cancellation Using Prediction Residual Signals

Authors:

Christiane Acker, Peter Vary, and Heinrich Ostendarp

Book Title:

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

Venue:

Genova, Italy

Event Date:

0.-0.9.1991

Organization:

ESCA

Date:

Sept. 1991

Pages:

1297–1300

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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