定音

定音	dìng yīn	to call the tune / to make the final decision
定	dìng	to fix; to set; to make definite / to subscribe to (a newspaper etc); to book (tickets etc); to order (goods etc) / to congeal; to coagulate / (literary) definitely
音	yīn	sound / noise / note (of musical scale) / tone / news / syllable / reading (phonetic value of a character)