side tone

British  

noun

1. sound diverted from a telephone microphone to the earpiece so that a speaker hears his own voice at the same level and position as that of the respondent

---

Example Sentences

Side tone is objectionable for several reasons: first, it is sometimes annoying to the subscriber; second, and of more importance, the subscriber who is talking, hearing a very loud noise in his own receiver, unconsciously assumes that he is talking too loud and, therefore, lowers his voice, sometimes to such an extent that it will not properly reach the distant station.

From Project Gutenberg

This circuit is very efficient, but is subject to the objection of producing a heavy side tone in the receiver of the transmitting station.

From Project Gutenberg

By "side tone" is meant the noises which are produced in the receiver at a station by virtue of the action of the transmitter at that station.

From Project Gutenberg

I would suggest, therefore, that the student should study simultaneously from these two points of view, beginning with their most extreme positions, that is, bare outline on the one side and on the other side tone masses criticised for their accuracy of values only in the first instance.

From Project Gutenberg

In the better makes of microphone transformer, there is a third winding, called a side tone coil, to which a headphone can be connected so that the operator who is speaking into the microphone can listen-in and so learn if his transmitter is working up to standard.

From Project Gutenberg