Credit
APD contributors:Content Development
Head, Main Concept & Development
・Takayuki ARAI
Additional Concept & Content Development
・Kanae AMINO (Main concept development)
・Yoko SAIKACHI (VOT)
・Takashi ARAI (Lungs Part 1, 2)
・Keiichi YASU
・Hinako MASUDA
・Kanako TOMARU (VOT, English /r/ vs. /l/, /ba/-/da/, categorical perception)
・Tatsunori ENDOH (/de/vs. /ge/)
Technical Support
Content
・Yu SAKAMOTO (Content development support)
Website Admiistration
・Keiichi YASU
・Hinako MASUDA
・Kanako TOMARU
・Takehiro SANNOHE
・Tatsuya IWANAMI
・Tatsunori ENDOH
・Yuki MAEDA
Video Edit & Upload
・Keiichi YASU
・Takehiro SANNOHE
・Tatsuya IWANAMI
・Otodesigners Co., Ltd. (“Vowels in F1-F2 chart”)
Language Support
・Terri LANDER
*This work was partially supported by Grant-in-Aid for Scientific Research (24501063) from the Japan Society for the Promotion of Science.