The role of high frequencies in speech localization
The role of high frequencies in speech localization
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DOI：
10.1121/1.1926107
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发表时间：
2005-07-01
影响因子：
2.4
通讯作者：
van Schaik, A
中科院分区：
文献类型：
--
作者：
Best, V;Carlile, S;van Schaik, A
这项研究测量了人类听众定位口语单词的准确性。一个宽带（300 Hz- 16 kHz）语料库的单音节词的创建和听众使用虚拟的听觉环境。本地化进行了检查，为76个位置上的一个球体周围的听众。实验我表明，低通滤波的语音声音在8 kHz的性能下降，导致增加极角误差与锥的混乱。在实验2中发现，性能实际上随着8 kHz以上的信号电平而系统地变化。虽然较低的频率（低于8 kHz）是已知的，足以在大多数情况下准确的语音识别，这些结果表明，自然语音包含8和16 kHz之间的信息，这是准确定位所必需的。(c)2005年美国声学学会。
This study measured the accuracy with which human listeners can localize spoken words. A broadband (300 Hz- 16 kHz) corpus of monosyllabic words was created and presented to listeners using a virtual auditory environment. Localization was examined for 76 locations on a sphere surrounding the listener. Experiment I showed that low-pass filtering the speech sounds at 8 kHz degraded performance, causing an increase in polar angle errors associated with the cone of confusion. In experiment 2 it was found that performance in fact varied systematically with the level of the signal above 8 kHz. Although the lower frequencies (below 8 kHz) are known to be sufficient for accurate speech recognition in most situations, these results demonstrate that natural speech contains information between 8 and 16 kHz that is essential for accurate localization. (c) 2005 Acoustical Society of America.