Multivariate analysis of vocal fatigue in continuous reading
نویسندگان
چکیده
We present an experimental paradigm to measure changes in characteristics of speech under vocal fatigue. As speech material, we have chosen a vocal load (3 hours) and a cognitive process (aloud continuous reading) that can induce some fatigue of the reader. The fatigue is verified using an analysis of reading errors and of disfluencies. A multivariate analysis based on Wilks' lambda test, on 169,042 occurrences of phonemes, allows to analyze spectral and prosodic changes on each phonetic class. The results upon six readers show that the nasals (vowels and consonants) are the phonemes the most discriminative in vocal fatigue.
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تاریخ انتشار 2010