Speech production modifications produced by competing talkers, babble, and stationary noise
Speech production modifications produced by competing talkers, babble, and stationary noise
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DOI：
10.1121/1.2990705
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发表时间：
2008-11-01
影响因子：
2.4
通讯作者：
Cooke, Martin
中科院分区：
文献类型：
--
作者：
Lu, Youyi;Cooke, Martin
噪音对言语产生有影响。过去曾使用过固定噪声和胡言乱语，但很少研究竞争说话者的影响，这种影响可能会导致不同类型的干扰。当前的研究检查了 N 个说话者噪声对句子产生的声学和语音影响，N 值范围从 1（竞争说话者）到无穷大（语音形状噪声）。噪声对语音产生的影响随着背景说话者数量 (N) 和噪声水平的增加而增加，这两者都会增加噪声的能量掩蔽效应。在稳定噪声的背景下，噪声引起的语音总是比安静中产生的语音更容易理解，并且清晰度的增益随着 N 和噪声水平的增加而增加，这表明说话者修改他们的作品以改善听者耳朵的能量掩蔽。当在竞争的说话者背景中呈现时，由竞争的说话者引起的语音比安静中产生的语音更容易理解，但效果的规模与竞争的说话者的能量掩蔽效应相一致。没有发现任何证据表明语音产生的修改利用了竞争谈话者的时间结构。 (C) 2008 年美国声学学会。 [DOI：10.1121/1.2990705]
Noise has an effect on speech production. Stationary noise and babble have been used in the past but the effect of a competing talker, which might be expected to cause different types of disruption, has rarely been investigated. The current study examined the acoustic and phonetic consequences of N-talker noise on sentence production for a range of values of N from 1 (competing talker) to infinity (speech-shaped noise). The effect of noise on speech production increased with both the number of background talkers (N) and noise level, both of which act to increase the energetic masking effect of the noise. In a background of stationary noise, noise-induced speech was always more intelligible than speech produced in quiet, and the gain in intelligibility increased with N and noise level, suggesting that talkers modify their productions to ameliorate energetic masking at the ears of the listener. When presented in a competing talker background, speech induced by a competing talker was more intelligible than speech produced in quiet, but the scale of the effect was compatible with the energetic masking effect of the competing talker. No evidence was found of modifications to speech production which exploited the temporal structure of a competing talker. (C) 2008 Acoustical Society of America. [DOI: 10.1121/1.2990705]