Virtual localization improved by scaling nonindividualized external-ear transfer functions in frequency
Virtual localization improved by scaling nonindividualized external-ear transfer functions in frequency
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DOI：
10.1121/1.427147
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发表时间：
1999-09-01
影响因子：
2.4
通讯作者：
Middlebrooks, JC
中科院分区：
文献类型：
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作者：
Middlebrooks, JC
本研究探讨了虚拟声定位在三个不同的条件下，根据定向传递函数（DTFs），用于合成的虚拟目标。本耳和他耳条件分别使用从听者自己的耳朵测量的DTF和从其他受试者测量的DTF。缩放耳条件采用在频率上缩放的其他耳DTF，以最小化收听者的DTF和其他受试者的DTF中的频谱特征之间的失配。定位误差的所有措施通常是最低的在自己的耳朵条件。在其他耳朵的条件下，所有的错误措施往往增加成比例的DTFs的受试者间的差异。当另一只耳朵的DTFs中的频谱特征在频率上系统地低于收听者自己的DTFs时，低前部目标通常被报告为后部低，而高后部目标被报告为前部高。当一组DTFs中的频谱特征在频率上系统地高于一个人自己的DTFs时，海拔判断显示出向上的偏差。在缩放耳朵的条件下，所有措施的性能往往改善相对于其他耳朵的条件。在大多数情况下，频率缩放使使用另一个受试者的DTF的惩罚减少了一半以上。(C)1999年美国声学学会。【S0001-4966（99）01509-X】。
This study examined virtual sound localization in three conditions that differed according to the directional transfer functions (DTFs) that were used to synthesize the virtual targets. The own-ear and other-ear conditions used DTFs measured from listeners' own ears and those measured from other subjects, respectively. The scaled-ear condition employed other-ear DTFs that were scaled in frequency to minimize the mismatch between spectral features in the listener's and the Other subject's DTFs. All measures of localization error typically were lowest in the own-ear condition. In other-ear conditions, all error measures tended to increase in proportion to the inter-subject differences in DTFs. When spectral features in an other-ear set of DTFs fell systematically lower in frequency than in a listener's own DTFs, low frontal targets typically were reported as low in the rear, and high rear targets were reported as high in front. When spectral features in a set of DTFs fell systematically higher in frequency than in a Listener's own DTFs, elevation judgements showed an upward bias. In the scaled-ear condition, all measures of performance tended to improve relative to the other-ear condition. In the majority of cases, frequency scaling more than halved the penalty for use of another subject's DTFs. (C) 1999 Acoustical Society of America. [S0001-4966(99)01509-X].