@techreport{oai:ipsj.ixsq.nii.ac.jp:00075430,
 author = {Greg, Short and Keikichi, Hirose and Nobuaki, Minematsu and Greg, Short and Keikichi, Hirose and Nobuaki, Minematsu},
 issue = {7},
 month = {Jul},
 note = {In Japanese phonemes can be of two perceptual durations: short and long. This distinction can be difficult for students of Japanese to acquire. We perform a preliminary perceptual experiment to look into the effects of speaking rate with the future purpose of developing CALL software for learning the tokushuhaku. Japanese words and non-sense words were recorded at three different speaking rates. Then, the duration of one of the vowels was extended in order to produce what would be perceived as a long vowel. From these results, there seemed to be a small shift in the duration at which the transition from short to long vowel occurs. Also, there were other factors besides only speaking rate that caused the transition duration from long to short to shift such as whether it was the final syllable or not., In Japanese phonemes can be of two perceptual durations: short and long. This distinction can be difficult for students of Japanese to acquire. We perform a preliminary perceptual experiment to look into the effects of speaking rate with the future purpose of developing CALL software for learning the tokushuhaku. Japanese words and non-sense words were recorded at three different speaking rates. Then, the duration of one of the vowels was extended in order to produce what would be perceived as a long vowel. From these results, there seemed to be a small shift in the duration at which the transition from short to long vowel occurs. Also, there were other factors besides only speaking rate that caused the transition duration from long to short to shift such as whether it was the final syllable or not.},
 title = {A Preliminary Perceptual Analysis on the Relationship of Phoneme Duration and Speaking Rate},
 year = {2011}
}