The effect of amplitude envelope blending across frequency bands on the quality of noise-vocoded speech

Kazuo Ueda, Tomoya Araki, Yoshitaka Nakajima

    研究成果: 書籍/レポート タイプへの寄稿会議への寄与

    抄録

    Ueda and Nakajima [Trans. Tech. Comm. Psychol. Physiol. Acoust., 38, 771-776, (2008); 39, 211-216, (2009)] found a consistent clustering of frequency bands common to different languages through factor analyses applied to power fluctuations of critical-band filtered speech sounds. One of the factors exhibited a characteristic shape of two peaks, which implied a correlation between a pair of distant frequency bands. The present study examined how amplitude envelope independence across frequency bands affected perception of Japanese noise-vocoded speech. The results indicated that the 20- and 4-band-synthesis conditions exhibited nearly perfect performances without any systematic training or feedback, and that the conditions in which the lowest and the next lowest frequency band blended, keeping a long-term spectrum energy distribution (sharpness) constant, yielded low mora accuracy. Those results indicated that noise-vocoded speech synthesized with the 4 frequency bands contained enough information for speech perception.

    本文言語英語
    ホスト出版物のタイトル8th European Conference on Noise Control 2009, EURONOISE 2009 - Proceedings of the Institute of Acoustics
    PART 3
    出版ステータス出版済み - 12月 1 2009
    イベント8th European Conference on Noise Control 2009, EURONOISE 2009 - Edinburgh, 英国
    継続期間: 10月 26 200910月 28 2009

    出版物シリーズ

    名前8th European Conference on Noise Control 2009, EURONOISE 2009 - Proceedings of the Institute of Acoustics
    番号PART 3
    31

    その他

    その他8th European Conference on Noise Control 2009, EURONOISE 2009
    国/地域英国
    CityEdinburgh
    Period10/26/0910/28/09

    !!!All Science Journal Classification (ASJC) codes

    • 音響学および超音波学

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