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恢复的包络线索在听力受损听众识别语音时间精细结构中的作用。

The role of recovered envelope cues in the identification of temporal-fine-structure speech for hearing-impaired listeners.

作者信息

Léger Agnès C, Desloge Joseph G, Braida Louis D, Swaminathan Jayaganesh

机构信息

Research Laboratory of Electronics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Room 36-757, Cambridge, Massachusetts 02139.

出版信息

J Acoust Soc Am. 2015 Jan;137(1):505-8. doi: 10.1121/1.4904540.

DOI:10.1121/1.4904540
PMID:25618081
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4304958/
Abstract

Narrowband speech can be separated into fast temporal cues [temporal fine structure (TFS)], and slow amplitude modulations (envelope). Speech processed to contain only TFS leads to envelope recovery through cochlear filtering, which has been suggested to account for TFS-speech intelligibility for normal-hearing listeners. Hearing-impaired listeners have deficits with TFS-speech identification, but the contribution of recovered-envelope cues to these deficits is unknown. This was assessed for hearing-impaired listeners by measuring identification of disyllables processed to contain TFS or recovered-envelope cues. Hearing-impaired listeners performed worse than normal-hearing listeners, but TFS-speech intelligibility was accounted for by recovered-envelope cues for both groups.

摘要

窄带语音可分为快速时间线索[时间精细结构（TFS）]和缓慢幅度调制（包络）。经过处理仅包含TFS的语音会通过耳蜗滤波实现包络恢复，有人认为这可以解释正常听力听众对TFS语音的可懂度。听力受损的听众在TFS语音识别方面存在缺陷，但恢复的包络线索对这些缺陷的影响尚不清楚。通过测量对处理后包含TFS或恢复包络线索的双音节词的识别，对听力受损的听众进行了评估。听力受损的听众表现比正常听力的听众差，但两组的TFS语音可懂度都由恢复的包络线索来解释。

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本文引用的文献

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