Lateralization of complex waveforms: effects of fine structure, amplitude, and duration.
Lateralization of complex waveforms: effects of fine structure, amplitude, and duration.
复制标题
复杂波形的偏侧化：精细结构、幅度和持续时间的影响。
DOI：
10.1121/1.381227
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发表时间：
1976
期刊：
影响因子：
--
通讯作者：
E. Hafter
中科院分区：
文献类型：
--
作者：
J. Nuetzel;E. Hafter
近年来，人们越来越关注使用两耳间时间作为高频侧化的线索。我们的研究探讨了这个问题，使用AM复合载波的1800，2400，3000，3600，3900，4200和4500赫兹，调制在300赫兹和耳间延迟。研究结果表明：（a）使这些刺激偏侧化的能力不依赖于低频失真，因为尽管存在强烈的低频掩蔽，这种能力仍然存在;（B）当整个波形而不仅仅是调制包络被延迟时，任务更容易，尽管这种差异似乎随着实践而下降;（c）刺激幅度和持续时间对检测耳间时间差的影响使人想起纯音所观察到的影响，尽管AM信号可能更充分地利用持续的时间差;和（d）偏侧化随着耳间载波频率差异而下降。我们无法获得AM复合体的定侧...
In recent years there has been an increased interest in the use of interaural time as a cue for lateralization at high frequencies. Our study examines this question using AM complexes with carriers of 1800, 2400, 3000, 3600, 3900, 4200, and 4500 Hz, modulated at 300 Hz and interaurally delayed. The findings indicate that (a) the ability to lateralize these stimuli does not depend on low‐frequency distortion, since this ability remains despite the presence of intense low‐frequency masking; (b) the task is easier when the entire waveform, rather than just the modulation envelope, is delayed, though this difference seems to decline with practice; (c) the effects of stimulus amplitude and duration on the detection of interaural time differences are reminiscent of those observed with pure tones, although ongoing time differences may be more fully utilized with AM signals; and (d) lateralization declines with interaural carrier frequency discrepancy. We were unable to obtain lateralization of AM complexes at on...