6.4.2 GA /ɔɪ/
GA /ɔɪ/ begins from a half-open, back position (much like AN /ɔ/, or possibly a little opener if you have a close (western) variety of the AN vowel). The second element may be between GA /ə/ and /ɪ/.
Some words containing /ɔɪ/:
• noise, oil, avoid, poison, disappoint
• boy, loyal, royal, annoy