Canned laughter is the recording of fake laughter that you hear in the background of some older sitcom shows. The people you hear aren’t actually a live audience laughing at the joke. These sounds were recorded at an earlier time. Charles Douglas, a TV sound engineer, came up with the idea in the 1950s. He became frustrated with live TV audiences because he felt they laughed at the wrong times. So, he experimented with adding canned laughter. Douglas got good results, and soon after, canned laughter became a standard in the TV industry.