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On 4/27/2015 2:05 PM, John Haley wrote: > I don't know the exact answer, but I suggest you pitch every record > individually in Sound Forge. How to figure this out--music goes up an > octave when the playing speed is doubled, or drops an octave when the speed > is cut in half. So the pitch won't be too far off comparing 78 to 80. Of > course little changes in pitch are very important to how it sounds. > > If you are serious about transferring 78's, you really might want to get a > more modern turntable. Turntables from the 78 era are usually nightmares > for rumble, instability, etc. A big amen to that. Incidentally, a disc meant to play at 80rpm will, if played at 78.25rpm (nominal "78" speed) come out with every frequency at 0.978125 x what was intended. Sincea note that's a semitone flat is 0.9439 x the intended frequency, that means that an 80rpm disc played at 78.25rpm will be less than a semitone off. Still worth correcting. If the frequencies are all multiplied by 80/78.125 = 1.0223642, they'll come out right. Peace, Paul --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com