Buss Emily, Dai Huanping, Hall Joseph W
Department of Otolaryngology/Head and Neck Surgery, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
Department of Speech, Language, and Hearing Sciences, University of Arizona, Tucson, Arizona 85721
J Acoust Soc Am. 2015 Jan;137(1):EL51-7. doi: 10.1121/1.4903914.
Monaural envelope correlation perception is the ability to discriminate between stimuli composed of two or more bands of noise based on envelope correlation. Sensitivity decreases as stimulus bandwidth is reduced below 100 Hz. The present study manipulated stimulus bandwidth (25-100 Hz) and duration (25-800 ms) to evaluate whether performance of highly trained listeners is limited by the number of inherent modulation periods in each presentation. Stimuli were two bands of noise, separated by a 500-Hz gap centered on 2250 Hz. Performance improved reliably with increasing numbers of envelope modulation periods, although there were substantial individual differences.
单耳包络相关感知是指基于包络相关性来区分由两个或更多噪声频段组成的刺激的能力。当刺激带宽降低到100Hz以下时，敏感度会下降。本研究通过操纵刺激带宽（25 - 100Hz）和持续时间（25 - 800ms）来评估训练有素的听众的表现是否受到每次呈现中固有调制周期数量的限制。刺激为两个噪声频段，由一个以2250Hz为中心、500Hz宽的间隙隔开。尽管存在显著的个体差异，但随着包络调制周期数量的增加，表现可靠地得到改善。
