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    Control of feedback for assistive listening devices

    213621_Nakagawa 2014.pdf (2.894Mb)
    Access Status
    Open access
    Authors
    Nakagawa, Carlos Renato Calcada
    Date
    2014
    Supervisor
    Dr Wei-Yong Yan
    Dr Yee-Hong Leung
    Assoc. Prof. Dr Yue Rong
    Prof. Sven Nordholm
    Type
    Thesis
    Award
    PhD
    
    Metadata
    Show full item record
    School
    School of Electrical and Computer Engineering
    URI
    http://hdl.handle.net/20.500.11937/1430
    Collection
    • Curtin Theses
    Abstract

    Acoustic feedback refers to the undesired acoustic coupling between the loudspeaker and microphone in hearing aids. This feedback channel poses limitations to the normal operation of hearing aids under varying acoustic scenarios. This work makes contributions to improve the performance of adaptive feedback cancellation techniques and speech quality in hearing aids. For this purpose a two microphone approach is proposed and analysed; and probe signal injection methods are also investigated and improved upon.

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