etd accuracy

[Dean L. Reyburn, RPT]

Ron N. writes
>I'm trying to plug some more holes in my information, and I'm hoping
>someone knows this right off the top. I hear of ETD accuracy ranges in the
>0.01 cent vicinity. Is this correct? Is it correct for the entire range of
>the piano? I know the difficulties in getting a decent signal in the low
>frequency ranges. I'm asking about processing capabilities given a decent
>signal.
>
Hi Ron,

RCT resolves 0.01 cents accurately and consistently from A0 to B8 (almost 
one
octave above piano range).

The problem with pianos is that the string itself doesn't resolve better
than about .05 cents or so even on a good piano in the midrange, where 
resolution is best. Even so, it doesn't hurt to do tuning calculations 
beyond
that just to avoid rounding errors.

Hope that helps

-Dean Reyburn


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