背景噪声对人感知声音时间信息的影响

被引：1

作者：

张墨

孙心德

机构：

[1] 华东师范大学生命科学学院脑科学研究中心

来源：

生物物理学报 | 2008年 / 03期

基金：

教育部留学回国人员科研启动基金;

关键词：

噪声; 纯音; 间隔探测阈值; 声音强度; 听阈;

D O I：

暂无

中图分类号：

Q4 [生理学];

学科分类号：

071003 ;

摘要：

对声音时间信息的分辨在人和动物感知声音信息的过程中至关重要。在自然声环境中,声音信息总处于一定的噪声背景下。文章以间隔探测阈值为指标测定了人对纯音和噪声的间隔探测阈值,以及持续噪声背景对间隔探测阈值的影响。声音信号采用1000～10000Hz的纯音信号和白噪声信号,声音强度为70dBSPL。背景噪声为持续白噪声,强度分别为45、55、65dBSPL。结果表明,对纯音信号,随着背景噪声强度增加,间隔探测阈值有升高的趋势。对噪声信号来说,45、55dBSPL的背景噪声对噪声信号的间隔探测阈值无显著影响,但65dBSPL的背景噪声使间隔探测阈值显著升高。研究结果提示,背景噪声能够在一定程度上影响人对声音时间信息的感知,影响的程度与背景噪声的强度有关。

引用

页码：203 / 210

页数：8

共 19 条

[1]

Effects of age and hearing loss ongapdetection and the precedence effect:narrow-band stimuli. Lister JJ,Roberts RA. Journal of Speech Language and Hearing Research . 2005

[2]

Influence of spatial and temporal coding on auditory gap detection. Oxenham AJ. The Journal of The Acoustical Society of America . 2000

[3]

Psychometric functions for gap detection in noise measured from young and aged subjects. He NJ,Horwitz AR,Dubno JR,Mills JH. The Journal of The Acoustical Society of America . 1999

[4]

Temporal resolution in young and elderly subjects as measured by mismatch negativity and a psychoacoustic gap detection task. Bertoli S,Smurzynski J,Probst R. Clinical Neurophysiology . 2002

[5]

Effects of age and hearing loss on gap detection and the precedence effect:broadband stimuli. Roberts RA,Lister JJ. Journal of Speech Language and Hearing Research . 2004

[6]

Gap detection with sinusoids and noise in normal,impaired,and electrically stimulated ears. Moore BC,Glasberg BR. The Journal of The Acoustical Society of America . 1988

[7]

Gap detection as a function of frequency,bandwidth,and level. Shailer MJ,Moore BC. The Journal of The Acoustical Society of America . 1983

[8]

Fine grain temporal analysis in aphasia:evidence from auditory gap detection. Stefanatos GA,Braitman LE,Madigan S. Neuropsychologia . 2007

[9]

Temporal factors and speech recognition performance in young and elderly listeners. Gordon-Salant S,Fitzgibbons PJ. Journal of Speech and Hearing Research . 1993

[10]

Temporal resolution in infancy and subsequent language development. Trehub SE,Henderson JL. Journal of Speech and Hearing Research . 1996

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