Second order Volterra Inverses for Compensation of Loudspeaker Nonlinearity

H. Schurer, Hans Schurer, Cornelis H. Slump, O.E. Herrmann

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    14 Citations (Scopus)
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    Abstract

    High quality sound reproduction by loudspeakers is increasingly problematic if the dimensions of the loudspeaker decrease. To produce enough power, large diaphragm excursions are needed which give rise to significant distortions especially at very low frequencies. Instead of improving the mechanical construction of the transducer we apply a feedforward nonlinear digital inverse circuit. Results of two 2nd order Volterra compensators show a significant reduction of the second order harmonics, leaving higher order distortions unchanged. The structure of the realization influences the performance considerably. Two realization structures are considered, and the error caused by the differentiators in the output of the compensators are compared. Both algorithms are implemented in real-time on a digital signal processor (DSP) for on-line testing with the transducer
    Original languageUndefined
    Title of host publicationProceedings of the IEEE ASSP Workshop on Applications of Signal Processing to Audio and Acoustics
    Place of PublicationMohonk Mountain House, New Paltz, New York, USA
    PublisherIEEE
    Pages74-78
    Number of pages5
    ISBN (Print)0-7803-3064-1
    DOIs
    Publication statusPublished - 15 Oct 1995

    Publication series

    Name
    PublisherIEEE

    Keywords

    • IR-17422
    • METIS-114317

    Cite this

    Schurer, H., Schurer, H., Slump, C. H., & Herrmann, O. E. (1995). Second order Volterra Inverses for Compensation of Loudspeaker Nonlinearity. In Proceedings of the IEEE ASSP Workshop on Applications of Signal Processing to Audio and Acoustics (pp. 74-78). Mohonk Mountain House, New Paltz, New York, USA: IEEE. https://doi.org/10.1109/ASPAA.1995.482982