Hu Yi, Kokkinakis Kostas
Department of Electrical Engineering and Computer Science, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53211
Department of Speech-Language-Hearing: Sciences and Disorders, University of Kansas, Lawrence, Kansas 66045
J Acoust Soc Am. 2014 Jan;135(1):EL22-8. doi: 10.1121/1.4834455.
The purpose of this study was to determine the overall impact of early and late reflections on the intelligibility of reverberated speech by cochlear implant listeners. Two specific reverberation times were assessed. For each reverberation time, sentences were presented in three different conditions wherein the target signal was filtered through the early, late or entire part of the acoustic impulse response. Results obtained with seven cochlear implant listeners indicated that while early reflections neither enhanced nor reduced overall speech perception performance, late reflections severely reduced speech intelligibility in both reverberant conditions tested.
本研究的目的是确定早期和晚期反射对人工耳蜗使用者在混响语音可懂度方面的总体影响。评估了两种特定的混响时间。对于每种混响时间，句子在三种不同条件下呈现，其中目标信号通过声学脉冲响应的早期、晚期或整个部分进行滤波。对七名人工耳蜗使用者的测试结果表明，虽然早期反射既没有提高也没有降低整体语音感知性能，但在两种测试的混响条件下，晚期反射都严重降低了语音可懂度。
