squelch circuit

Found in Anh - Anh (Wordnet)

Definition Noun : - A noise suppression circuit : A squelch circuit is an electronic circuit designed to mute or suppress the audio output of a receiver (like a radio) when the incoming signal strength falls below a certain threshold, typically when it is weaker than the background noise. This prevents the user from hearing constant, annoying static or noise when no clear transmission is presen...