Comparing the influence of spectro-temporal integration in computational speech segregation

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    Abstract

    The goal of computational speech segregation systems is to automatically segregate a target speaker from interfering maskers. Typically, these systems include a feature extraction stage in the front-end and a classification stage in the back-end. A spectrotemporal integration strategy can be applied in either the frontend, using the so-called delta features, or in the back-end, using a second classifier that exploits the posterior probability of speech from the first classifier across a spectro-temporal window. This study systematically analyzes the influence of such stages on segregation performance, the error distributions and intelligibility predictions. Results indicated that it could be problematic to exploit context in the back-end, even though such a spectro-temporal integration stage improves the segregation performance. Also, the results emphasized the potential need of a single metric that comprehensively predicts computational segregation performance and correlates well with intelligibility. The outcome of this study could help to identify the most effective spectro-temporal integration strategy for computational segregation systems.
    Original languageEnglish
    Title of host publicationProceedings of Interspeech 2016
    Number of pages5
    PublisherInternational Speech Communication Association
    Publication date2016
    DOIs
    Publication statusPublished - 2016
    EventInterspeech 2016 - Hyatt Regency, San Francisco, Ca, United States
    Duration: 8 Sep 201612 Sep 2016

    Conference

    ConferenceInterspeech 2016
    LocationHyatt Regency
    Country/TerritoryUnited States
    CitySan Francisco, Ca
    Period08/09/201612/09/2016

    Keywords

    • Computational speech segregation
    • Binary masks
    • Supervised learning
    • Spectro-temporal integration

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