Speech intelligibility and localization in a multi-source environment
Speech intelligibility and localization in a multi-source environment
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DOI：
10.1121/1.424670
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发表时间：
1999-06-01
影响因子：
2.4
通讯作者：
Colburn, HS
中科院分区：
文献类型：
--
作者：
Hawley, ML;Litovsky, RY;Colburn, HS
自然环境通常包含除感兴趣的源之外的声源，这可能会干扰听众提取有关主要源的信息的能力。这项工作报告了对语音清晰度的研究：以及正常听力听众在存在竞争语音的情况下的定位。一个、两个或三个竞争句子 [IEEE Trans.音频电声。 17(3), 225-246 (1969)]是从水平面的不同位置以相对于目标句子的几种空间配置呈现的。目标句子和竞争句子由同一位男性说话者以相同的水平说出。所有实验均在实际声场和虚拟声场中进行。在虚拟声场中，对双耳和单耳条件进行了测试。在语音清晰度实验中，当目标句子和竞争句子在空间上分离时，性能有显着提高。在实际声场和虚拟声场双耳聆听条件下，语音清晰度的表现相似。虽然这些改进中的大多数是：使用更好的耳朵时单耳聆听很明显，但在某些情况下双耳聆听对于大幅改进是必要的。在定位实验中，目标源识别是在七种绝对识别范式中测量的，具有与语音研究相同的竞争句子配置。定位实验的性能在实际声场中明显优于虚拟声场双耳聆听条件。在双耳条件下，即使存在三个竞争句子，定位性能也非常好。在单耳条件下，表现要差得多。对于本地化实验，测试的竞争句子的数量或配置没有显着影响。对于这些实验，性能如下：语音清晰度实验不受定位能力的限制，(C) 1999 美国声学学会。 [S0001-4966(99)00606-2]。
Natural environments typically contain sound sources other than the source of interest that may interfere with the ability of listeners to extract information about the primary source. Studies of speech intelligibility:and localization by normal-hearing listeners in the presence of competing speech are reported:on in this work. One, two or three competing sentences [IEEE Trans. Audio Electroacoust. 17(3), 225-246 (1969)] were presented from various locations in the horizontal plane in several spatial configurations relative to a target sentence. Target and competing sentences were spoken by the same male talker and at the same level. All experiments were conducted both in an actual sound field and in a virtual sound field. In the virtual sound field, both binaural and monaural conditions were-tested. In the speech intelligibility experiment, there were significant improvements in performance when the target and competing sentences were spatially:separated. performance was similar in the actual sound-field and virtual sound-field binaural-listening conditions for speech intelligibility. Although most of these improvements are:evident monaurally when using the better ear, binaural listening was necessary for large improvements in some situations. In the localization experiment, target source identification was measured in a seven-alternative absolute identification paradigm with the same competing sentence configurations as for the speech study. Performance in the localization experiment was significantly better in the actual sound-field than in the virtual sound-field binaural listening conditions. Under binaural conditions, localization performance was very good, even in the;presence of three competing sentences. Under-monaural conditions, performance was-much worse. For the localization experiment,there was-no significant effect of the number or configuration of the competing sentences tested. For these experiments, the performance in:the speech intelligibility experiment was not limited,by localization ability, (C) 1999 Acoustical Society of America. [S0001-4966(99)00606-2].