Verituner Update

[Dave Carpenter]

--- Richard Brekne <Richard.Brekne@grieg.uib.no> wrote:

> Ok... you tune A3.... then veritune calculates a
> tuneing based on the inharmonicity of that
> note. That means that then A4 (for example) is
> already a given. So you tune A4 to that already
> calculated value. Its inharmonicity is then read in
> and the system recalculates.... correct ??
> If so then it seems like the device is one step
> behind. I mean whatever inharmonicity reading
> A4 yeilds (which in turn affects the calculated
> values for the rest of the piano excepting A3)
> is influenced by the fact that A4 was tuned to a
> precalculated value based on A3's
> inharmonicity.
>
> What if the tuner is in dissagreement with that
> first calculated value, or any there after for
> that matter.
> I am sure you have a nice explanation, and have a
> way of handling that. Perhaps I have even
> missed this in a previous post. In any case I am
> looking forward to hearing what the response
> to this situation is.

If you are using One-Step Tuning, you always tune from A4 outwards. A4 is
tuned first, always. A4 is an exceptional note - it never moves no matter
what inharmonicity measurements are taken. It is always tuned to Patial 1 =
440 (or whatever you select for standard pitch).

Then when you tune new notes, they are always tuned with reference to
already tuned notes. The tuning for a new note is recalculated during the
first few moments of its tuning. That is, when you arrive at a new note, its
tuning target is first set to an initial value based upon readings taken
thus far. You  begin tuning towards this approximate target. Then when the
inharmonicity is read for that note (during the first few seconds of
sounding the note), its tuning target is refined and you finish fine tuning
the note. This all occurs within a few seconds. So the Verituner is not
really a step behind, it's more like "just in time".

Maybe I am not following your example correctly. Please let me know if I
have missed your question.


Dave Carpenter, RPT
Veritune, Inc.