The original post: /r/todayilearned by /u/arvo_sydow on 2024-09-17 16:29:02.

Original Title: TIL television broadcasters sped up tapes of I Love Lucy reruns in the 1970s while using a special hardware effects unit to alter the actors’ voices to their normal pitch. This effectively made more space (around 3 minutes) to run advertisements, generating more revenue for the stations.