대한음성학회:학술대회논문집 (Proceedings of the KSPS conference)

대한음성학회 (The Korean Society Of Phonetic Sciences And Speech Technology)
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청각장애아 및 건청아 음성으로부터 성도 면적 추정

Vocal Tract Area Estimation from Deaf and Normal Children's Speech

  • 김세환 (충북대학교 제어계측공학과) ;
  • 권오욱 (충북대학교 제어계측공학과)
  • Kim, Se-Hwan (Department of Control and Instrumentation Engineering, Chungbuk National University) ;
  • Kwon, Oh-Wook (Department of Control and Instrumentation Engineering, Chungbuk National University)
  • 발행 : 2005.11.17
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초록

This paper analyzes the vocal tract area estimation algorithm used as a part of a speech analysis program to help deaf children correct their pronunciations by comparing their vocal tract shape with normal children's. Assuming that a vocal tract is a concatenation of cylinder tubes with a different cross section, we compute the relative vocal tract area of each tube using the reflection coefficients obtained from linear predictive coding. Then, obtain the absolute vocal tract area by computing the height of lip opening with a formula modified for children's speech. Using the speech data for five Korean vowels (/a/, /e/, /i/, /o/, and /u/), we investigate the effects of the sampling frequency, frame size, and model order. We compare vocal tract shapes obtained from deaf and normal children's speech.

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