構音運動とその変動性について-音響分析的研究-

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概要

• 論文の詳細を見る

• Observations on the intra subject variability of articulatory motor function were performed in order to clearify the sensory motor feedback self-control function. Measurements of vowel formant frequencies and voice onset time of speech sounds spoken 100 times by 5 normal male adults were performed and mean values, intra subject standard deviations and relative standard deviations were calculated. Mean values of the first formant frequencies and the second formant frequencies showed almost the same values as those found in previous literatures. Intra subject standard deviations of the distribution of formant frequencies were 20-60 Hz relative to the mean valures of formant frequencies, but relative standard deviations showed almost the same values, 3-6% in each vowel. Intra subject standard deviations of voice onset time were between 5 and 12 msec. without relation to the length of voice onset time, and the relative standard deviations were the same in each consonant. It was clarified that distributions of measurements of 100 trials showed normal distribution. The author pointed out that the self controlled physiological function works within normal range of variability which was shown by infra subject standard deviation, and relative standard deviation might be considered as self control index in the term of servo technology. The author hypothesized that the measurement of intra subject standard deviation in speech behavior would give us useful information for the diagnosis and prognosis of speech disorders.

• 社団法人 日本耳鼻咽喉科学会の論文

著者

• 江口 実美

  九州がんセンター

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