方格言语 vs 间断言语：时频分割对可懂度的影响。

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

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 Acoustic Design, Kyushu University, 4-9-1 Shiobaru, Minami-ku, Fukuoka 815-8540, Japan.

出版信息

JASA Express Lett. 2021 Jul;1(7):075204. doi: 10.1121/10.0005600.

DOI:10.1121/10.0005600

PMID:36154646

Abstract

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.

摘要

本文研究了时间上被打断的连贯性言语（间断性言语）和频率上被打断的棋盘格言语（时频交错言语）的可懂度，这两种言语都保留了原始言语的一半。随着分段时长的增加，间断性言语的可懂度降低。20 频段棋盘格言语刺激无论分段时长如何，都几乎能达到 100%的可懂度，而在 2 个和 4 个频段时，在 160 毫秒的分段时长时会出现 35%-40%的低谷。镶嵌式言语刺激（在时频单元上平均功率）通常产生较差的可懂度（ ⩽10%）。结果表明，对于在时频域中分散的言语线索，底层听觉组织存在局限性。