I had the opposite experience once. In the 90s Louis Farrakhan spoke at umass. It was a strange time. I worked at the college paper and a reporter let me list

I had the opposite experience once. In the 90s Louis Farrakhan spoke at umass. It was a strange time. I worked at the college paper and a reporter let me listen to her tape. when listening back he kept getting higher and higher pitched. It finally occurred to me that when recording him batteries where getting lower and lower and the tape was recording slower. When played back at normal speeds.. it never got to “Alvin and the chipmunks” high pitch but.