canned laughtracks

"Cycle of the Werewolf" で皆が寝静ずんだ後に、少年は外で花火をあげようと企んでいます。
So then he begins the waiting for the rest of the house to go to bed. It takes a long time. The TV runs on and on in the living room, the canned laughtracks often augumented by Katie's shrill giggles.
"canned laughtracks" が分からないので調べます。
・Wikipedia: A laugh track (or laughter track) is a separate soundtrack for a recorded comedy show containing the sound of audience laughter. In some productions, the laughter is a live audience response; in the U.S., the term usually implies artificial laughter (canned laughter or fake laughter) made to be inserted into the show.
なるほど、"recorded" ではなく "canned" となっていたので分からなかったのですね。