RESETTING THE PITCH-ANALYSIS SYSTEM .1. EFFECTS OF RISE TIMES OF TONES IN NOISE BACKGROUNDS OR OF HARMONICS IN A COMPLEX TONE
RESETTING THE PITCH-ANALYSIS SYSTEM .1. EFFECTS OF RISE TIMES OF TONES IN NOISE BACKGROUNDS OR OF HARMONICS IN A COMPLEX TONE
复制标题
DOI：
10.3758/bf03213894
复制
发表时间：
1994-08-01
期刊：
影响因子：
--
通讯作者：
MELNERICH, L
中科院分区：
文献类型：
--
作者：
BREGMAN, AS;AHAD, P;MELNERICH, L
在两个实验中，纯音成分振幅的突然增加是否会在感知上将它们从更复杂的频谱中分离出来的问题进行了研究。在实验1中，播放3.5秒的噪声作为掩模。在噪声过程中，连续出现两个不同频率的纯音分量。受试者被要求判断音高序列是上升还是下降。这些成分的上升时间对辨别的影响很小且不一致。实验2中，3.5秒的背景信号为复音。它的两个分量的振幅依次递增。再一次，受试者判断音调模式是上升还是下降。这一次，增量的上升时间产生了相当大的单调效应，增量越快，识别效果越好。两种结果之间的差异可以从听觉系统对变化和不变信号的反应以及其“突然变化”反应在吸引感知处理到某些频谱区域中的作用来解释。
The question of whether sudden increases in the aniplitude of pure-tone components would perceptually isolate them from a more complex spectrum was investigated in two experiments. In Experiment 1, a 3.5-sec noise was played as a masker. During the noise, two pure-tone components of different frequencies appeared in succession. Subjects were asked to judge whether the pitch sequence went up or down. The rise time of these components had only a small and inconsistent effect on discrimination. In Experiment 2, the 3.5-sec background signal was a complex tone. The amplitudes of two of its components were incremented in succession. Again, subjects judged whether the pitch pattern went up or down. This time there was a sizable, monotonic effect of the rise time of the increments, with more rapid increments leading to better discrimination. The difference between the two results is interpreted in terms of the auditory system's response to changing and unchanging signals and the role of its ''sudden-change'' responses in attracting perceptual processing to certain spectral regions.