听觉流之间信息掩蔽的调整方法测量
Method-of-adjustment measures of informational masking between auditory streams.
作者信息
Sheft Stanley, Yost William A
机构信息
Parmly Hearing Institute, Loyola University Chicago, 6525 North Sheridan Road, Chicago, Illinois 60626, USA.
出版信息
J Acoust Soc Am. 2008 Jul;124(1):EL1-7. doi: 10.1121/1.2918786.
Abstract
A method-of-adjustment procedure was used to measure thresholds for detecting a continuous sequence of brief 2-kHz tonal pulses in the presence of random-frequency masking sequences. Masker pulses consisted of either one or eight sinusoidal components and were either synchronous or asynchronous with the signal pulses. Effects of pulse rate and asynchronous gating were generally consistent with a reduction in informational masking due to segregation of the signal and masker streams. Despite use of continuous stimulus presentation to encourage stream segregation, masking was still obtained from most listeners in most conditions.
摘要
采用一种调整法程序来测量在存在随机频率掩蔽序列的情况下检测连续的2千赫兹短音脉冲序列的阈值。掩蔽脉冲由一个或八个正弦成分组成，并且与信号脉冲同步或不同步。脉冲速率和异步选通的影响通常与由于信号和掩蔽流的分离导致的信息掩蔽减少相一致。尽管使用连续刺激呈现来促进流分离，但在大多数情况下，大多数听众仍能获得掩蔽效应。
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