Meanings

with stealthy steps

one's true feelings and one's official stance (which may be at odds)

ocean surveillance ship

writing palatalized sounds with a single kana character

jion kanazukai (historical kana style for kanji on-yomi)

dampening (sound)

phonological alternation

dominant (note)

seventh chord

dominant chord

Kannon of Great Mercy (alt. name for Avalokiteshvara)

recording head

binaural recording

tape recorder

heteronym

sound of operation

pronunciation of ha-column sounds in non-initial positions as wa-column sounds

Middle Chinese

acoustic matching

folk music