sidetone (English, noun)
expansion: sidetone (countable and uncountable, plural sidetones)
Senses:
glosses: The effect of sound that is picked up by the telephone's mouthpiece and introduced (at low level) into the earpiece of the same handset, acting as feedback; or a similar effect in radiotelegraphy, public-address systems, etc.
tags: countable
uncountable
Forms:
form: sidetones
tags: plural