laugh track
television device
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history of television in the U.S.
- In Television in the United States: Sitcoms

…way of an added “laugh track”) usually featured prominently in these shows, most of which were built around families. The situation comedy had been an enormously popular program type on radio, but it had a comparatively slow start on TV. Some of the most popular early sitcoms included Mama…
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Why Do Television Shows Use Laugh Tracks?
- In Why Do Television Shows Use Laugh Tracks?

…the sound by adding a laugh track! “Sweetening,” or the addition of sound effects such as laughs, hollers, and other audience-produced noises to the audio track of a TV show, has been used since the 1940s to feign the appearance, or rather the sound, of an engaged and entertained response…
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