کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
876720 910860 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The relative importance of temporal envelope information for intelligibility prediction: A study on cochlear-implant vocoded speech
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی پزشکی
پیش نمایش صفحه اول مقاله
The relative importance of temporal envelope information for intelligibility prediction: A study on cochlear-implant vocoded speech
چکیده انگلیسی

Vocoder simulation has been long applied as an effective tool to assess factors influencing the intelligibility of cochlear implants listeners. Considering that the temporal envelope information contained in contiguous bands of vocoded speech is correlated and redundant, this study examined the hypothesis that the intelligibility measure evaluating the distortions from a small number of selected envelope cues is sufficient to well predict the intelligibility scores. The speech intelligibility data from 80 conditions was collected from vocoder simulation experiments involving 22 normal-hearing listeners. The relative importance of temporal envelope information in cochlear-implant vocoded speech was modeled by correlating its speech-transmission indices (STIs) with the intelligibility scores. The relative importance pattern was subsequently utilized to determine a binary weight vector for STIs of all envelopes to compute the index predicting the speech intelligibility. A high correlation (r = 0.95) was obtained when selecting a small number (e.g., 4 out of 20) of temporal envelope cues from disjoint bands to predict the intelligibility of cochlear-implant vocoded speech.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Medical Engineering & Physics - Volume 33, Issue 8, October 2011, Pages 1033–1038
نویسندگان
,