Improvement of intelligibility of ideal binary-masked noisy speech by   adding background noise

doi:10.1121/1.3559707

CORC > 北京大学 > 信息科学技术学院

	Improvement of intelligibility of ideal binary-masked noisy speech by adding background noise
	Cao, Shuyang ; Li, Liang ; Wu, Xihong
刊名	journal of the acoustical society of america
	2011
关键词	PERCEIVED SPATIAL SEPARATION TIME-FREQUENCY SEGREGATION INFORMATIONAL MASKING PERCEPTUAL RESTORATION PHONEMIC RESTORATION ENERGETIC MASKING RECOGNITION UNMASKING TALKERS
DOI	10.1121/1.3559707
英文摘要	When a target-speech/masker mixture is processed with the signal-separation technique, ideal binary mask (IBM), intelligibility of target speech is remarkably improved in both normal-hearing listeners and hearing-impaired listeners. Intelligibility of speech can also be improved by filling in speech gaps with un-modulated broadband noise. This study investigated whether intelligibility of target speech in the IBM-treated target-speech/masker mixture can be further improved by adding a broadband-noise background. The results of this study show that following the IBM manipulation, which remarkably released target speech from speech-spectrum noise, foreign-speech, or native-speech masking (experiment 1), adding a broadband-noise background with the signal-to-noise ratio no less than 4 dB significantly improved intelligibility of target speech when the masker was either noise (experiment 2) or speech (experiment 3). The results suggest that since adding the noise background shallows the areas of silence in the time-frequency domain of the IBM-treated target-speech/ masker mixture, the abruption of transient changes in the mixture is smoothed and the perceived continuity of target-speech components becomes enhanced, leading to improved target-speech intelligibility. The findings are useful for advancing computational auditory scene analysis, hearing-aid/cochlear-implant designs, and understanding of speech perception under "cocktail-party" conditions. (C) 2011 Acoustical Society of America. [DOI:10.1121/1.3559707]; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000289298600063&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Acoustics; Audiology & Speech-Language Pathology; SCI(E); EI; PubMed; 15; ARTICLE; 4; 2227-2236; 129
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/194005]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Cao, Shuyang,Li, Liang,Wu, Xihong. Improvement of intelligibility of ideal binary-masked noisy speech by adding background noise[J]. journal of the acoustical society of america,2011.
APA	Cao, Shuyang,Li, Liang,&Wu, Xihong.(2011).Improvement of intelligibility of ideal binary-masked noisy speech by adding background noise.journal of the acoustical society of america.
MLA	Cao, Shuyang,et al."Improvement of intelligibility of ideal binary-masked noisy speech by adding background noise".journal of the acoustical society of america (2011).