@article{oai:icu.repo.nii.ac.jp:00004368,
 author = {Niiya, Machi},
 journal = {ICUWPL},
 month = {Mar},
 note = {In Zulu, a language spoken in South Africa, there is a group of sounds within consonants called clicks, which are categorized into three types: dental, lateral and palatal. This paper discusses the coarticulatory effect on vowels in environments that precede and follow clicks, especially palatal clicks. This paper provides a different perspective from that of previous studies on coarticulatory effects, which focused on pulmonic consonants. Through analyzing recordings of a native Zulu speaker using Praat and vowel plot, a coarticulatory effect was found in acoustic signals. F1 and F2 values showed differences of the effect between preceding vowels and following vowels caused by height, frontness, and roundness of vowels. Since the posture of the tongue, which is the tongue blade and the dorsum, is essential in producing clicks, it is expected that there is an “ease-of-articulation” effect on the adjacent vowels in order to pronounce sounds with ease.},
 pages = {8--13},
 title = {Vowel Coarticulation in Zulu},
 volume = {1},
 year = {2017}
}