Article

Frequency-dependent bursting in adaptive echo cancellation and its prevention using double-talk detectors

  1. Z. Ding1,
  2. C. R. Johnson Jr.1,
  3. W. A. Sethares2

Article first published online: 5 MAR 2007

DOI: 10.1002/acs.4480040304

Issue

International Journal of Adaptive Control and Signal Processing

International Journal of Adaptive Control and Signal Processing

Volume 4, Issue 3, pages 219–236, May/June 1990

Additional Information

How to Cite

Ding, Z., Johnson, C. R. and Sethares, W. A. (1990), Frequency-dependent bursting in adaptive echo cancellation and its prevention using double-talk detectors. Int. J. Adapt. Control Signal Process., 4: 219–236. doi: 10.1002/acs.4480040304

Author Information

  1. 1

    School of Electrical Engineering, Cornell University, Phillips Hall, Ithaca, NY 14853, U.S.A.

  2. 2

    Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI 53706, U.S.A.

Publication History

  1. Issue published online: 5 MAR 2007
  2. Article first published online: 5 MAR 2007
  3. Manuscript Revised: 8 AUG 1989
  4. Manuscript Received: 1 DEC 1988

Funded by

  • NSF. Grant Number: MIP-8608787

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Keywords:

  • Bursting;
  • Averaging;
  • Double-talk detector;
  • Adaptive echo cancellation

Abstract

Echo cancellation in telephone communications can often be accomplished by using adaptive network echo cancellers. However, under certain circumstances, these generally effective echo cancellers can cause an undesirable bursting phenomenon. In this paper the essential driving force behind bursting is attributed to the correlation between the signal the near-end is to transmit and the signal the near-end receives from the far-end. This correlation and the subsequent potential for temporary destabilization arise as a result of the feedback loop structure of the four-wire telephone circuit. A new test signal which approximately measures this correlation is proposed for use in the double-talk detector scheme that is commonly used to halt adaptation before a mishap such as bursting occurs.

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