The relative contribution of interaural time and magnitude cues to dynamic sound localization
The relative contribution of interaural time and magnitude cues to dynamic sound localization
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耳间时间和幅度线索对动态声音定位的相对贡献
DOI：
10.1109/aspaa.1995.482963
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
Elizabeth M. Wenzel
中科院分区：
文献类型：
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作者：
Elizabeth M. Wenzel
本文介绍了初步的数据，从一项研究检查的相对贡献的耳间时间差（ITDs）和耳间电平差（ILD）的虚拟声源的本地化与头部运动。听众的任务是估计耳机中虚拟声源的明显方向和距离。刺激合成从最小相位表示的非个性化的定向传递函数。在动态条件下，鼓励听众移动他们的头部;跟踪听众头部的位置，并使用卷积器模拟固定的外部声源以真实的时间合成刺激。ILD和ITD与头部运动正确或不正确相关：（1）ILD和ITD均正确相关，（2）ILD正确，ITD固定在0/spl deg/方位角和0/spl deg/仰角，（3）ITD正确，ILD固定在0/spl deg/，0/spl deg/。对于静态条件运行类似的条件，除了没有线索随着头部运动而改变之外。数据表明，静态条件下，头部运动有助于听众解决混乱主要是当ILD正确相关，虽然也看到了一个较小的影响远正确的ITDs。连同静态条件下的结果，数据表明，本地化往往是占主导地位的线索是最可靠的或一致的，当可靠性是由一致性随着时间的推移，以及跨频率。
This paper presents preliminary data from a study examining the relative contribution of interaural time differences (ITDs) and interaural level differences (ILDs) to the localization of virtual sound sources both with and without head motion. The listeners' task was to estimate the apparent direction and distance of virtual sources presented over headphones. Stimuli were synthesized from minimum phase representations of nonindividualized directional transfer functions. During dynamic conditions, listeners were encouraged to move their heads; the position of the listener's head was tracked and the stimuli were synthesized in real time using a Convolvotron to simulate a stationary external sound source. ILDs and ITDs were either correctly or incorrectly correlated with head motion: (1) both ILDs and ITDs correctly correlated, (2) ILDs correct, ITD fixed at 0/spl deg/ azimuth and 0/spl deg/ elevation, (3) ITDs correct, ILDs fixed at 0/spl deg/, 0/spl deg/. Similar conditions were run for static conditions except that none of the cues changed with head motion. The data indicated that, compared to static conditions, head movements helped listeners to resolve confusions primarily when ILDs were correctly correlated, although a smaller effect was also seen far correct ITDs. Together with the results for static conditions, the data suggest that localization tends to be dominated by the cue that is most reliable or consistent, when reliability is defined by consistency over time as well as across frequency.