Checkerboard speech vs interrupted speech: Effects of spectrotemporal segmentation on intelligibility

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  • 上田, 和夫
    九州大学大学院芸術工学研究院デザイン人間科学部門 九州大学大学院芸術工学研究院附属応用知覚科学研究センター 九州大学五感応用デバイス研究開発センター
  • 川上, 里以菜
    九州大学芸術工学部音響設計学科
  • 竹市, 博臣
    理化学研究所情報システム部

抄録

The intelligibility of interrupted speech (interrupted over time) and checkerboard speech (interrupted over time-by-frequency), both of which retained a half of the original speech, was examined. The intelligibility of interrupted speech stimuli decreased as segment duration increased. 20-band checkerboard speech stimuli brought nearly 100% intelligibility irrespective of segment duration, whereas, with 2 and 4 frequency bands, a trough of 35%–40% appeared at the 160-ms segment duration. Mosaic speech stimuli (power was averaged over a time-frequency unit) yielded generally poor intelligibility (≦10% ). The results revealed the limitations of underlying auditory organization for speech cues scattered in a time-frequency domain.

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収録刊行物

  • JASA Express Letters

    JASA Express Letters 1 (7), 075204-1-075204-7, 2021-07-21

    Acoustical Society of America

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