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    CMOS implementation of an Adaptive Noise Canceller into a subband filter


    Jonn, Mathias and Schwarzbacher, Andreas and Timoney, Joseph (2005) CMOS implementation of an Adaptive Noise Canceller into a subband filter. In: DAFX-05 the 8th Int. Conference on Digital Audio Effects, September 20-22 2005, Madrid, Spain.

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    Abstract

    In recent years the demand for mobile communication has increased rapidly. While in the early years of mobile phones battery life was one of the main concerns for developers speech quality is now becoming one of the most important factors in the development of the next generation of mobile phones. This paper describes the CMOS implementation of an adaptive noise canceller (ANC) into a subband filter. The ANC-Subband filter is able to reduce noise components of real speech without prior knowledge of the noise properties. It is predestined to be used in mobile devices and therefore, uses a very low clock frequency resulting in a small power consumption. This low power consumption combined with its small physical size enables the circuit also be used in hearing aids to efficiently reduce noise contained in the speech signal.

    Item Type: Conference or Workshop Item (Paper)
    Keywords: CMOS technology; Adaptive filters; subband filtering; low power design;
    Academic Unit: Faculty of Science and Engineering > Computer Science
    Faculty of Science and Engineering > Electronic Engineering
    Item ID: 4198
    Depositing User: Joseph Timoney
    Date Deposited: 20 Feb 2013 10:15
    Refereed: Yes
    URI:

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