Just got stumped trying to figure out a conversion between playback rate and semitones. Given that playing back a sample at a rate of 0.5 will transpose it down 12 semitones, and playing it back at 2 will transpose it up 12 st... How do I calculate arbitrary semitone transpositions up and down in terms of playback rates? My math part of the brain is apparently not working today.
Roosna & Flak - Contemporary Dance & Music