Previous Page: There were discs that was recorded at 80 rpm although most could play quite well at speeds of 85 rpm, though it has been noted also that playing times diversified from a ridiculous unrealistic diabolical 35 seconds to just over a minute. Nonetheless, these inventors and scientists were the pioneers; much respect must be given to their inventive efforts and achievements. For where a thing of worthiness has begun, there will be continuous effort and commitment towards furthering their development and improvement. Emil Berliner's first gramophones records were turned by hand at speeds between 60 to an unprecedented 100 rpm. The 7-inch discs lasted a minute or so and had low sound quality. Berliner and Fred Gaisberg realised that unless the speed was governed the gramophone would never be more than just a novelty. The first practical sound films produced in the US as late the 1920s had their sound on separate disc records and it was more important for the sound to be continuous. A reel of film might run for 11 minutes, so a rotational speed of about 32 rpm was required to make the sound match the picture. History doesn't tell us why or how precisely the 33 1/3 rpm was chosen. CBS engineers developed the first LPs in 1948 through experimenting with an old machine. | 
