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    Dual microphone solution for acoustic feedback cancellation for assistive listening

    Access Status
    Fulltext not available
    Authors
    Nakagawa, Carlos
    Nordholm, Sven
    Yan, Wei-Yong
    Date
    2012
    Type
    Conference Paper
    
    Metadata
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    Citation
    Nakagawa, C. and Nordholm, S. and Yan, W. 2012. Dual microphone solution for acoustic feedback cancellation for assistive listening, in Proceedings of the 2012 IEEE International Conference on Acoustics, Speech and Signal Processing, Mar 25-30 2012, pp. 149-152. Kyoto, Japan: The Institute of Electrical and Electronics Engineers.
    Source Title
    Proceedings of the 2012 IEEE International Conference on Acoustics, Speech, and Signal Processing
    Source Conference
    2012 IEEE International Conference on Acoustics, Speech, and Signal Processing
    DOI
    10.1109/ICASSP.2012.6287839
    ISBN
    9781467300469
    School
    Department of Electrical and Computer Engineering
    URI
    http://hdl.handle.net/20.500.11937/10070
    Collection
    • Curtin Research Publications
    Abstract

    The method proposed in this paper improves the identification and cancellation of the feedback path by making the adaptive canceller robust against the impact of the desired speech signal. The proposed method allows for the canceller's coefficients to be continuously adapted allowing it to track variations in the feedback path even in the presence of the desired signal. It suggests the use of dual microphones and dual adaptive filters arranged in such a way that allows the speech signal to be identified and removed from the adaptation process. This results in a more robust solution which was verified by our experiments and evaluations. The perceptual evaluation of speech quality (PESQ) measure was also used to show that the proposed method results in better signal quality.

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