Bharadwaj Sneha V, Graves Amanda G, Bauer Delia D, Assmann Peter F
J Acoust Soc Am. 2007 May;121(5 Pt1):EL196-202. doi: 10.1121/1.2721375.
Effects of auditory deprivation on speech production by ten cochlear-implanted children were investigated by turning off the implant for durations ranging from 0.3 to 5.0 s and measuring the formant frequencies (F1 and F2) of the vowel /epsilon/. In five of the ten talkers, F1 and/or F2 shifted when auditory feedback was eliminated. Without feedback, F2 frequency lowered consistently, suggesting vowel centralization. Phonetic transcription indicated that some of these acoustic changes led to perceptible shifts in phonetic quality. The results provide evidence that brief periods of auditory deprivation can produce perceptible changes in vowels produced by some cochlear-implanted children.
通过关闭人工耳蜗0.3至5.0秒的不同时长，并测量元音/epsilon/的共振峰频率（F1和F2），研究了听觉剥夺对十名接受人工耳蜗植入儿童言语产生的影响。在这十名说话者中，有五名在消除听觉反馈时F1和/或F2发生了偏移。在没有反馈的情况下，F2频率持续降低，表明元音央化。语音转录表明，其中一些声学变化导致了语音质量的可察觉变化。结果提供了证据，即短暂的听觉剥夺会使一些接受人工耳蜗植入的儿童所发出的元音产生可察觉的变化。
