B2-3. Production variation of English schwa and Japanese listeners' perceptual assimilation pattern of English schwa (Summaries of Talks at the 26<sup>th</sup> General Meeting) 論文 Kanako Tomaru・Takayuki Arai ·2012 ·『音声研究』 16(3) pp. 104 doi:10.24467/onseikenkyu.16.3_104_1
A Quantitative Evaluation of Hypernasality in Children. Using the slope of spectrum envelope. 論文 Sawako Hirai・Keiko Okazaki・Takayuki Arai ·1994-01-01 ·『The Japan Journal of Logopedics and Phoniatrics』 35(2) pp. 199-206 doi:10.5112/jjlp.35.199