Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    New Insights into Optimal Acoustic Feedback Cancellation

    195260_195260.pdf (421.6Kb)
    Access Status
    Open access
    Authors
    Nakagawa, C. Renato C.
    Nordholm, Sven
    Yan, Wei-Yong
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Nakagawa, C. Renato C. and Nordholm, Sven and Yan, Wei-Yong. 2013. New Insights into Optimal Acoustic Feedback Cancellation. IEEE Signal Processing Letters. 20 (9): pp. 869-872.
    Source Title
    IEEE Signal Processing Letters
    DOI
    10.1109/LSP.2013.2271318
    ISSN
    1070-9908
    Remarks

    Copyright © 2013 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

    URI
    http://hdl.handle.net/20.500.11937/18543
    Collection
    • Curtin Research Publications
    Abstract

    In this letter, we present new insights into the bias problem for acoustic feedback cancellation when a probe signal approach is used. The optimum solution of the feedback canceler is not the feedback path but the product of the feedback path and the sensitivity function and hence, the solution is biased. The novelty of this paper also consists of the derivation of the conditions for unbiased feedback cancellation when a probe signal is used as input to the canceler. An adequate delay in the forward path is necessary to reduce, or remove the bias term. The theoretical analysis is verified with simulation results.

    Related items

    Showing items related by title, author, creator and subject.

    • Acoustic feedback cancellation for a multi-microphone earpiece based on a null-steering beamformer
      Schepker, H.; Tran, Linh T.T.; Nordholm, Sven; Doclo, S. (2016)
      In order to reduce acoustic feedback in hearing aids, adaptive filters are commonly used to estimate the feedback contribution in the microphone(s). While theoretically allowing for perfect feedback cancellation, in ...
    • Improving adaptive feedback cancellation in hearing AIDS using an affine combination of filters
      Schepker, H.; Tran, Linh T.T.; Nordholm, Sven; Doclo, S. (2016)
      In adaptive feedback cancellation an adaptive filter is used to model the acoustic feedback path between the hearing aid loudspeaker and the microphone. An important parameter for adaptive filters is the step-size, providing ...
    • Combining null-steering and adaptive filtering for acoustic feedback cancellation in a multi-microphone earpiece
      Schepker, H.; Tran, Linh Thi Thuc; Nordholm, Sven; Doclo, Simon (2017)
      © EURASIP 2017. Commonly adaptive filters are used to reduce the acoustic feedback in hearing aids. While theoretically allowing for perfect cancellation of the feedback signal, in practice the adaptive filter solution ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.