Recognition of three simultaneous utterance of speech by four-line directivity microphone mounted on head of robot

Naoya Mochiki, Toshiyuki Sekiya, Tetsuji Ogawa, Tetsunori Kobayashi

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    3 Citations (Scopus)

    Abstract

    A sound source separation method using four-line directivity microphones mounted on a head of a robot is proposed and applied to speech recognition under existence of two disturbances of speech. Sound source separation methods using microphones mounted on robot heads generally used strict head-related transfer functions(HRTF). We propose a robust sound source separation that does not require an estimate of a strict HRTF. Our method takes advantage of a sound pressure difference with the robot head acting as a sound barrier. The enhancement of the difference in the target speech is performed by signal processing of three layers:two-line SAFIA, two-line Spectral Subtraction and their integration. The experimental results of three simultaneous utterance recognition with vocabulary of 20K show that the proposed method is effective in achieving 71% error reduction.

    Original languageEnglish
    Title of host publication8th International Conference on Spoken Language Processing, ICSLP 2004
    PublisherInternational Speech Communication Association
    Pages821-824
    Number of pages4
    Publication statusPublished - 2004
    Event8th International Conference on Spoken Language Processing, ICSLP 2004 - Jeju, Jeju Island, Korea, Republic of
    Duration: 2004 Oct 42004 Oct 8

    Other

    Other8th International Conference on Spoken Language Processing, ICSLP 2004
    CountryKorea, Republic of
    CityJeju, Jeju Island
    Period04/10/404/10/8

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    ASJC Scopus subject areas

    • Language and Linguistics
    • Linguistics and Language

    Cite this

    Mochiki, N., Sekiya, T., Ogawa, T., & Kobayashi, T. (2004). Recognition of three simultaneous utterance of speech by four-line directivity microphone mounted on head of robot. In 8th International Conference on Spoken Language Processing, ICSLP 2004 (pp. 821-824). International Speech Communication Association.