On spectral estimation of residual echo in hands-free telephony

Authors:

Enzner, G. ,  Martin, R. ,  Vary, P.

Book Title:

Proceedings of International Workshop on Acoustic Echo and Noise Control (IWAENC)

Address:

Darmstadt, Germany

Date:

Sep. 2001

Language:

English

Abstract

We present and compare residual echo power spectral estimation techniques. Residual echo arises in hands-free telephony equipment due to insufficient echo cancellation performance. The residual echo power spectral density is very important to control combined residual echo and noise postfiltering. Eventually, we introduce a new partitioned block-adaptive estimation technique delivering considerably improved estimates in reverberant and noisy double talk environments.

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