Word

促音

そくおん
assimilated sound (small "tsu" in Japanese); geminate consonant
Word

蓄音機

蓄音器
ちくおんき
gramophone
Word

拗音

ようおん
contracted sound; palatalised sound (e.g. Japanese morae with small kana)
Word

全音

ぜんおん
whole tone
Word

消音

しょうおん
silencing (e.g. machine); muffling; muting (e.g. TV)
Word

音盤

おんばん
disk; record
Word

音律

おんりつ
metre; rhythm; musical temperament
Word

心音

しんおん
(sound of one's) heartbeat
Word

音像

おんぞう
stereo image (audio)
Word

字音

じおん
Japanese pronunciation of a kanji (based on adopted Chinese pronunciations)