Meaning of hot microphone | Babel Free

Definitions

A microphone that is activated (but not powered) by the sound of the user's voice, allowing it to pick up speech without having to be manually turned on, while still rejecting background noise unaccompanied by speech.

especially

Examples

“When the captain asked, "What's happening? What's happening?" at 0150:06, his words were not recorded by the hot microphone at the first officer's position; however, the hot microphone recorded the captain's subsequent remarks until it stopped recording cockpit conversation at 0150:25. (None of the relief first officer's comments during the accident sequence were recorded by the hot microphone. For additional information, see the section titled, "Audio Information Recorded by First Officer's Hot Microphone.")”

CEFR level