Analytic Filter Bank for Speech Analysis, Feature Extraction and Perceptual Studies

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    Abstract

    Speech signal consists of events in time and frequency, and therefore its analysis with high-resolution time-frequency tools is often of importance. Analytic filter bank provides a simple, fast, and flexible method to construct time-frequency representations of signals. Its parameters can be easily adapted to different situations from uniform to any auditory frequency scale, or even to a focused resolution. Since the Hilbert magnitude values of the channels are obtained at every sample, it provides a practical tool for a high-resolution time-frequency analysis.

    The present study describes the basic theory of analytic filters and tests their main properties. Applications of analytic filter bank to different speech analysis tasks including pitch period estimation and pitch synchronous analysis of formant frequencies and bandwidths are demonstrated. In addition, a new feature vector called group delay vector is introduced. It is shown that this representation provides comparable, or even better results, than those obtained by spectral magnitude feature vectors in the analysis and classification of vowels. The implications of this observation are discussed also from the speech perception point of view.
    Original languageEnglish
    Title of host publicationProceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH
    PublisherInternational Speech Communication Association (ISCA)
    Pages449-453
    Number of pages5
    Volume2017-August
    ISBN (Print)978-1-5108-4876-4
    DOIs
    Publication statusPublished - Aug 2017
    MoE publication typeA4 Conference publication
    EventInterspeech - Stockholm, Sweden
    Duration: 20 Aug 201724 Aug 2017
    Conference number: 18
    http://www.interspeech2017.org/

    Publication series

    NameInterspeech: Annual Conference of the International Speech Communication Association
    ISSN (Electronic)1990-9772

    Conference

    ConferenceInterspeech
    Country/TerritorySweden
    CityStockholm
    Period20/08/201724/08/2017
    Internet address

    Keywords

    • speech analysis
    • pitch-synchronous analysis
    • time-frequency methods

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