noun
diaphragm (speaker, microphone, etc.)
Refers to the vibrating membrane in audio devices that produces or captures sound.
スピーカーの振動板が破れて音が歪んでいる。
The speaker's diaphragm is torn, so the sound is distorted.
noun
trembler (electrical component)
Technical term in electrical engineering for a vibrating contact or interrupter, less common than sense 1.
古いラジオの振動板が故障して火花が出た。
The trembler in the old radio malfunctioned and produced sparks.