his microphone's on
his phone on
det:poss n adv
his microphone's on .
h ɪ z WORD_BOUNDARY m aɪ k ɹ ə f oʊ n z WORD_BOUNDARY ɔ n WORD_BOUNDARY
h i s WORD_BOUNDARY m i c r o p h o n e ' s WORD_BOUNDARY o n WORD_BOUNDARY