Hi Bob: I'm glad you cleared that up. I knew that the RCT measures both ways. Does TuneLab measure both ways also? Jim Coleman, Sr. On Thu, 20 May 1999, Robert Scott wrote: > Jim Coleman, Sr. wrote: > > >In anticipation of your next question, when you plot for, 3rd, 5th, > >6th, and 7th partials, you must make a correction for equal temperament > >being the source of the readings. Here are the readings taken with > >an electronic tuning machine: > > > >3rd partial 5th partial 6th partial 7th partial > > > >5.9 -4.6 13.6 -15.4 > > > >Now if you plot these numbers on the same graph, they will be all over > >the place. They must be adjusted in relation to harmonic partials > >instead of equal temperament readings. From the 3rd partial subtract > >1.95, from the 5th partial add 13.687, from the 6th partial subtract > >1.95 (same as 3rd partial), from the 7th partial, add 31.?? > > Let's be clear on one thing. The only reason that these "odd-ball" > partials require special handling when measuring inharmonicity is > that you are using the SAT. Other tuning devices (RCT and TuneLab) > measure inharmonicity directly and not by switching to an > equal-tempered note that is close to the desired partial. For > these electronic tuning machines, no special adjustment is > necessary to compensate for equal temperament being the source > of the readings because it is not. > > -Bob Scott > Ann Arbor, Michigan > >
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