时反语音的可懂度：四个频带的相对贡献。

Intelligibility of chimeric locally time-reversed speech: Relative contribution of four frequency bands.

机构信息

Department of Human Science, Faculty of Design/Research Center for Applied Perceptual Science/Research and Development Center for Five-Sense Devices, Kyushu University, 4-9-1 Shiobaru, Minami-ku, Fukuoka 815-8540, Japan.

Department of Information Science, Tohoku Gakuin University, 2-1-1 Tenjinzawa, Izumi-ku, Sendai 981-3193, Japan

出版信息

JASA Express Lett. 2021 Jun;1(6):065201. doi: 10.1121/10.0005439.

DOI:10.1121/10.0005439

PMID:36154368

Abstract

Intelligibility of four-band speech stimuli was investigated (n = 18), such that only one of the frequency bands was preserved, whereas other bands were locally time-reversed (segment duration: 75-300 ms), or vice versa. Intelligibility was best retained (82% at 75 ms) when the second lowest band (540-1700 Hz) was preserved. When the same band was degraded, the largest drop (10% at 300 ms) occurred. The lowest and second highest bands contributed similarly less strongly to intelligibility. The highest frequency band contributed least. A close connection between the second lowest frequency band and sonority was suggested.

摘要

研究了四频带语音刺激的可懂度（n=18），即仅保留一个频带，而其他频带则在局部时间上反转（片段持续时间：75-300ms），或者反之亦然。当保留第二低频带（540-1700Hz）时，可懂度保持最佳（75ms 时为 82%）。当同一频带降级时，下降幅度最大（300ms 时为 10%）。最低和第二最高频带对可懂度的贡献同样较弱。最高频率带的贡献最小。这表明第二低频带与响亮度之间存在密切联系。