Least-squares inverse filtering of speech

Authors

  • Bradford Gover Univ of Waterloo, Waterloo, Canada
  • James G. Ryan Univ of Waterloo, Waterloo, Canada

Keywords:

Least squares approximations, Mathematical models, Signal filtering and prediction, Dereverberation, Least-squares inverse filtering

Abstract

The difficulty of dereverberating received speech in a hands-free system is examined. Dereverberation is difficult and imperfect even for cases where the impulse response from source to receiver is known. Furthermore, an inverse filter designed from the measurement of room impulse response cannot be used with a different source. If a very long filter is used, speech can be degraded far more than if no equalization has been attempted at all. Finally, the usefulness of least-squares inverse filtering for dereverberation appears to be limited.

Additional Files

Published

1998-09-01

How to Cite

1.
Gover B, Ryan JG. Least-squares inverse filtering of speech. Canadian Acoustics [Internet]. 1998 Sep. 1 [cited 2025 Feb. 19];26(3):36-7. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1145

Issue

Vol. 26 No. 3 (1998)

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.