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Re: How many half-tones from 78 rpm to 80 rpm

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Mon, 24 Apr 2017 17:04:37 -0400

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 ```So, is there a separate logarithmic relationship accounting for...um, I guess the rpm to pitch, but also accounting for what the rpm is. Easier to give an example: Say the pitch difference (the resulting interval in pitch) between 78 rpm to 80 rpm is 44 cents. Is the pitch difference between 76 to 80 also 44 cents? Or would it be less? or more? My hunch is that it would be less. And between say 70 and 72 even less. But between 80 and 82 would be a bit more than 44 cents. And between 90 and 92 even more. Or maybe it's the opposite? Stated more simply, the lower the in rpm, the smaller the pitch interval resulting from a constant differential (say, 2 rpms), and the higher the rpm, the larger the interval. Or maybe the opposite? Or maybe it's a constant? Am I saying this right? ```