Training Japanese listeners to identify English /r/ and /l/: IV. Some effects of perceptual learning on speech production 論文 Ann R. Bradlow・David B. Pisoni・Reiko Akahane-Yamada・Yoh’ichi Tohkura ·1997-04-01 ·『The Journal of the Acoustical Society of America』 101(4) pp. 2299-2310 doi:10.1121/1.418276