A method to determine the speech transmission index from speech waveforms
A method to determine the speech transmission index from speech waveforms
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DOI：
10.1121/1.428216
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发表时间：
1999-12-01
影响因子：
2.4
通讯作者：
Braida, LD
中科院分区：
文献类型：
--
作者：
Payton, KL;Braida, LD
提出并评估了一种使用真实语音刺激计算语音传输指数（Sn）的方法。该方法减少了当语音波形用作探测刺激时可能遇到的一些伪影的影响。基于语音的 STI 是针对几种噪声、混响和噪声混响环境中的会话和清晰发音的语音进行计算，并与语音清晰度分数进行比较。结果表明，对于每种说话风格，基于语音的 STI 值与测试的退化语音条件的清晰度分数单调相关。因此，可以使用语音探测波形来计算 STI，并且所得到的指数值与通过理论方法从 MTF 导出的指数值一样，都是可懂度分数的良好预测因子。 (C) 1999 年美国声学学会。 [S0001-4966(99)03411-6]。
A method for computing the speech transmission index (Sn) using real speech stimuli is presented and evaluated. The method reduces the effects of some of the artifacts that can be encountered when speech waveforms are used as probe stimuli. Speech-based STIs are computed for conversational and clearly articulated speech in several noisy, reverberant, and noisy-reverberant environments and compared with speech intelligibility scores. The results indicate that, for each speaking style, the speech-based STI values are monotonically related to intelligibility scores for the degraded speech conditions tested. Therefore, the STI can be computed using speech probe waveforms and the values of the resulting indices are as good predictors of intelligibility scores as those derived from MTFs by theoretical methods. (C) 1999 Acoustical Society, of America. [S0001-4966(99)03411-6].