An analysis of loudspeaker distortion in the context of acoustic echo cancellation

Authors

  • Trevor Burton Department of Systems and Computer Engineering, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada
  • Rafik Goubran Department of Systems and Computer Engineering, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada

Keywords:

Acoustic fields, Acoustic signal processing, Frequency domain analysis, Loudspeakers, Nonlinear analysis, Acoustic echo cancellation, Acoustic systems, Adaptive Volterra filters, Computationally efficient, Echo cancellation, Experimental measurements, Frequency domains, Hands-free, Linear portions, Nonlinear echo cancellers, Operating condition, Reduced complexity, Telephony systems, Wide-band

Abstract

A study was conducted to analyze loudspeaker distortion based on experimental measurements obtained from several hands-free systems under various operating conditions. The results of the analysis revealed trends in the frequency domain nature of the loudspeaker distortion, providing insight into designing computationally efficient nonlinear echo cancellers. Adaptive Volterra filters were used to model the linear portion of the unknown acoustic system along with the nonlinear loudspeaker distortion to improve acoustic echo cancellation (AEC) performance as compared to echo cancellation (EC). It was demonstrated that reduced complexity nonlinear AEC structures based on adaptive Volterra filters were desirable for dealing with loudspeaker distortion with the introduction of wideband telephony systems.

Additional Files

Published

2009-09-01

How to Cite

1.
Burton T, Goubran R. An analysis of loudspeaker distortion in the context of acoustic echo cancellation. Canadian Acoustics [Internet]. 2009 Sep. 1 [cited 2025 Feb. 13];37(3):60-1. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2133

Issue

Vol. 37 No. 3 (2009)

Section

Proceedings of the Acoustics Week in Canada

License

Author Licensing Addendum

This Licensing Addendum ("Addendum") is entered into between the undersigned Author(s) and Canadian Acoustics journal published by the Canadian Acoustical Association (hereinafter referred to as the "Publisher"). The Author(s) and the Publisher agree as follows:

  1. Retained Rights: The Author(s) retain(s) the following rights:

    • The right to reproduce, distribute, and publicly display the Work on the Author's personal website or the website of the Author's institution.
    • The right to use the Work in the Author's teaching activities and presentations.
    • The right to include the Work in a compilation for the Author's personal use, not for sale.

  2. Grant of License: The Author(s) grant(s) to the Publisher a worldwide exclusive license to publish, reproduce, distribute, and display the Work in Canadian Acoustics and any other formats and media deemed appropriate by the Publisher.

  3. Attribution: The Publisher agrees to include proper attribution to the Author(s) in all publications and reproductions of the Work.

  4. No Conflict: This Addendum is intended to be in harmony with, and not in conflict with, the terms and conditions of the original agreement entered into between the Author(s) and the Publisher.

  5. Copyright Clause: Copyright on articles is held by the Author(s). The corresponding Author has the right to grant on behalf of all Authors and does grant on behalf of all Authors, a worldwide exclusive license to the Publisher and its licensees in perpetuity, in all forms, formats, and media (whether known now or created in the future), including but not limited to the rights to publish, reproduce, distribute, display, store, translate, create adaptations, reprints, include within collections, and create summaries, extracts, and/or abstracts of the Contribution.