Perrott D R, Ambarsoom H, Tucker J
Psychoacoustics Laboratory, California State University, Los Angeles 90032.
J Acoust Soc Am. 1987 Nov;82(5):1637-45. doi: 10.1121/1.395155.
Two experiments examined the capacity of listeners to turn and face an active sound source. Tests were conducted with sources located in the subject's forward field (an arc extending from 60 degrees to the subject's right to 60 degrees to the left). Localization performance was determined under both monaural and binaural listening conditions, using both brief pulses and sustained pulse trains as target signals. Not unexpectedly, the ability to orient the face to a hidden sound source was very poor under monaural conditions if the listener received only a brief (100-ms) tonal pulse. When continuous pulse trains were employed, localization, even under monaural conditions, became quite accurate. Across conditions, this complex motor response produced results in agreement with those that have been obtained when subjects were only required to report their spatial impressions. In particular, performance with binaural pulse trains was observed to vary as a function of the frequency of the target signals employed. Descriptions of the head movement response, along with a discussion of some of the implications of ear-head coordination, are presented.
两项实验研究了听众转身面对有源声源的能力。测试在声源位于受试者前方视野（从受试者右侧60度延伸至左侧60度的弧形区域）的情况下进行。在单耳和双耳聆听条件下，使用短暂脉冲和持续脉冲序列作为目标信号来确定定位性能。不出所料，如果听众仅接收到短暂（100毫秒）的音调脉冲，那么在单耳条件下将面部朝向隐藏声源的能力非常差。当使用连续脉冲序列时，即使在单耳条件下，定位也变得相当准确。在各种条件下，这种复杂的运动反应所产生的结果与受试者仅被要求报告其空间印象时所获得的结果一致。特别是，观察到双耳脉冲序列的表现会随着所使用目标信号的频率而变化。本文介绍了头部运动反应的描述以及关于耳头协调的一些影响的讨论。
