Minimization of waterbed effect using a frequency-domain algorithm

Jari Kataja, Marko Mäkelä

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    In feedback active noise control, noise is typically amplified outside the desired frequency band. This phenomenon is called the waterbed effect and it is dependent on the sensitivity function of the system including the control filter and the secondary path. Using frequency-domain adaptation on the control filter, the undesired amplification can be reduced by introducing a constraint on the update algorithm. This paper concerns the minimization of the waterbed effect using a constrained frequency-domain algorithm. The maximum value of the magnitude of sensitivity function is constrained under a given limit. The constraint is combined with the frequency-domain FXLMS algorithm to obtain the constrained frequency-domain FXLMS algorithm. The performance of the resulting algorithm is simulated and analyzed. The simulation results indicate that the constraint reduces the amplification due to the waterbed effect.
    Original languageEnglish
    Title of host publicationEuronoise 2006 proceedings CD-ROM
    PublisherAkustinen Seura ry
    Number of pages4
    Publication statusPublished - 2006
    MoE publication typeNot Eligible
    Event6th European Conference on Noise Control, Euronoise 2006 - Tampere, Finland
    Duration: 30 May 20061 Jun 2006

    Conference

    Conference6th European Conference on Noise Control, Euronoise 2006
    Abbreviated titleEuronoise
    CountryFinland
    CityTampere
    Period30/05/061/06/06

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    Keywords

    • active noise control
    • frequency-domain algorithm
    • waterbed effect
    • adaptive feedback control

    Cite this

    Kataja, J., & Mäkelä, M. (2006). Minimization of waterbed effect using a frequency-domain algorithm. In Euronoise 2006 proceedings CD-ROM Akustinen Seura ry.