What ubiquitous feature of television sitcoms was invented by sound engineer Charley Douglass who noticed that live audiences were unreliable for providing something?
Laughing audience Canned Laughter Laugh in a can Laughtrack Laughter track Laughter soundtrack Canned laughter Fake laughter Canned laugh Laugh machine Fake laugh Laugh Track Laughtracks Laugh tracks Laff box Artificial laughter Laff Box Laugh track
laugh in can fake laughter laughter soundtrack fake laugh laughter track laughtrack canned laugh laughtracks artificial laughter canned laughter laugh machine laugh track laugh tracks laughing audience laff box
laugh track
WikipediaEntity
Laugh track