When figuring cents off-sets of HTs (from ET) you start from the note it was historically started from. This is usually middle C. If however the ensemble wants the A to be 440 or 442, how do you give the offsets to acheive that on an ETD? I said to see how much A is off-set in the tempermant. If it is say 10.26 cents flat, to set the "callibration" of A to 10.26 cents sharp of 440. So if you want a to be 442 would you then set the machine to 442, then add 10.26 cents to that? Then go to C and use the offsets that are commonly published? ---ric
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