Pitch Raise using RCT

[paul bruesch]

David,

As long as the three unisons of any given note are anywhere NEAR each other,
you're fine with just sampling on one string. After all, all you're doing is
a coarse tuning.

That said, one piece of advice that will be helpful/beneficial is to tune
the A440 to your fork before you take the AAAAA sample. That will get you a
better pitch correction because the RCT can more accurately determine the
amount of inharmonicity.  HOWEVER, after you take the AAAAA sample, it's
best to de-tune the AAAAA back to where they were prior to starting your
pitch correction at A0. The RCT takes a moving 5-note average to determine
overpull. If your A's are in up to pitch, you throw off the overpull on
them, as well as the following 4 notes above. Rather than pulling a mute
strip (which it doesn't sound like you use...) I just "tune" one A to a
fifth below, then octaves from that.

Paul

On 3/1/07, David B. Stang <stangdave at columbus.rr.com> wrote:
>
>
> I have a question about using the Reyburn Cyber Tuner in pitch-raise mode.
> The instruction booklet is not clear on this, and I realized yesterday
> that the
> procedure I've been using may be a little bit wrong.
>
> Overall, I follow the directions, i.e. I start at A0 and proceed all the
> way
> up from left to right. The question is what to do at each particular note.
>
> Here's what I have been doing (on a 3-string unison):
>
> 1. Mute the center and right string.
> 2. Play note (left string only) and allow RCT to sample it.
> 3. Tune left string to the RCT.
> 4. Mute right string only and aurally tune center string to left.
>     (Or, mute left and right and tune center to RCT)
> 5. Un-mute and tune right to center and left.
>     (Or, mute left and center and tune right to RCT)
>
> I realized that this is probably better:
>
> 1. Play note unmuted (all 3 strings) and allow RCT to sample.
> 2. Tune the strings to RCT as above.
>
> ( Here's another procedure which is probably silly:
> 1. Mute center and right.
> 2. Play left note and allow RCT to sample it
> 3. Tune left string to RCT
> 4. Mute left and right.
> 5. Press 'backspace' to erase previous sample.
> 6. Play center note and allow RCT to sample it.
>     etc.)
>
> The first procedure uses only the left string to sample and find the
> overpull;
> the second procedure uses the average (presumably) of the three strings.
> Clearly it doesn't make any difference if all 3 strings are equally flat,
> but if the left is significantly flatter than the others, the calculated
> overpull may be too much. (& vice-versa).
>
> Or, am I concerned about something that doesn't make a hill-o-beans
> difference?
>
> Thanks
> David B. Stang
> Columbus, Ohio
>
>
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20070301/8acc93d7/attachment.html