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The sound of the speaker's own voice as heard in his telephone receiver; the effect is undesirable and is usually suppressed by special circuits.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
sidetoneIn a telephone handset, sending a small amount of your voice signal back into your ear through the handset so that you hear yourself talk. It makes the conversation more comfortable when you hear a little bit of your own speech, because you know the line isn't dead. See hybrid.
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