Audacity Forum

I am trying to copy reel to reel tapes into audacity. Audacity already has settings for turntables, such as if you play a 33 1/3 record at 45. My question is, if I play the tape at 7 1/2 IPS, and some of the recording on the tape is 3 3/4 IPS, or 1 7/8 IPS, What percentage do I adjust the speed sett...