David Ilvedson wrote: > They used an A440 fork to tune A3 (temperment starting point) > F3 - A3 = F3 - Fork. > Hi, Dave. Well, call me old fashioned, but this tunes the fourth partial of A3 to the second partial of the fork (±880), which would only yield A4=440.0 by luck. They are introducing two variables; the distance between partials 1 and 2 of the fork, and the distance between partials 1 and 2 of A4. The sum of those differences, unless by chance it is 0.0, is the _offset_ of A4 from 440.0. At least, that's the way I figure it. (Whether it makes a hill of beans worth of difference is a separate question.) -Mark Here it is again in step format: 1. F3-A3 beats at 5:4 (A5, 880) 2. F3-Fork beats at 5:2 (A5, 880) 3. Match 1. and 2. and you've tuned the 4th partial of A3 to the 2nd partial of the fork. 4. Tune A4 to A3 matching 4:2 (third-tenth is equal), and you've tuned the 2nd partial of A4 to the 2nd partial of the fork (=A3), assuming step 3. was accurate. 5. What have you tuned to the 440 fundamental of the fork? Nothing. You have not used the fundamental in this process. To borrow a phrase, sheesh.
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