Bosker Hans Rutger, Cooke Martin
Max Planck Institute for Psycholinguistics, P.O. Box 310, 6500 AH, Nijmegen, The Netherlands
Language and Speech Laboratory, Universidad del País Vasco, Vitoria, 01006, Spain
J Acoust Soc Am. 2018 Feb;143(2):EL121. doi: 10.1121/1.5024404.
Speakers adjust their voice when talking in noise (known as Lombard speech), facilitating speech comprehension. Recent neurobiological models of speech perception emphasize the role of amplitude modulations in speech-in-noise comprehension, helping neural oscillators to "track" the attended speech. This study tested whether talkers produce more pronounced amplitude modulations in noise. Across four different corpora, modulation spectra showed greater power in amplitude modulations below 4 Hz in Lombard speech compared to matching plain speech. This suggests that noise-induced speech contains more pronounced amplitude modulations, potentially helping the listening brain to entrain to the attended talker, aiding comprehension.
说话者在有噪音的环境中交谈时会调整自己的声音（即所谓的隆巴德言语），以促进言语理解。最近的言语感知神经生物学模型强调了幅度调制在噪声中言语理解中的作用，有助于神经振荡器“追踪”被关注的言语。本研究测试了说话者在噪声环境中是否会产生更明显的幅度调制。在四个不同的语料库中，调制频谱显示，与匹配的普通言语相比，隆巴德言语中低于4赫兹的幅度调制具有更大的功率。这表明，噪声环境下的言语包含更明显的幅度调制，可能有助于倾听的大脑与被关注的说话者同步，从而辅助理解。
