[pianotech] Pitch Raising

[Terry Farrell]

Hi Joe,

I have your article and studied it a good fair bit a few years back. My general conclusion was that it was so complicated that I could pitch raise 1,000 pianos with my teeth much faster and with much less pain that to decipher your approach. I'm not criticizing your method at all - how could I, I still don't have a clue what it is. And I think you are very generous to offer your thoughts and experience on the subject. But I'm really a reasonably smart person and I absolutely had no idea what to do with any of the information given in your method.

I have little doubt that you, the author, understand it and get good results with it. It simply did not appear user friendly to me at all.

I get good results with the very easy method I employ.  And I really don't think that Paul and I were battling. Were you battling me Paul? I hope you're not upset that I won!  ;-)

Sincerely,

Terry Farrell

On Oct 31, 2012, at 11:46 AM, Joseph Garrett wrote:

> Terry and Paul battled away saying: 
> " 
>> Which Sanderson do you use? With the SAT3 you only have the option of 25%
> or 33(?)%. 
> 
> I use the Sanderson pitch raising method - leapfrogging two mutes, unisons
> as I go, A0 to C88. I do not use an AccuTuner. I do use Verituner for
> iphone.
> 
>> In most pianos, for smaller pitch raises I hardly overpull the bass at
> all. If it's a big PR (e.g. 40c-50c or more) even then 25% is too much in
> the bass. 
> 
> I agree that 25% would be too much. That's why I've settled on about 16%.
> 
>> I find that the 33% overpull in the top two octaves or so is oftentimes
> not enough. In order to compensate for these, I usually compensate on the
> "Msr" by going more flat (treble) or less flat (bass) before having it
> calculate the overpull. I re-"Msr" every C#, F, and A (M3's)
> 
> I agree that 33% would often be too little overpull, which is why I have
> settled on about 38%.
> 
>> I strip mute, A0 - C8, unisons (center, previous note right, current note
> left, next note center, etc.) as I go... someday I'll get brave and try a
> single mute. Maybe. 
> 
> I effectively do the same thing, only with two mutes.
> 
>> I've always been tempted to investigate this, but does it really overpull
> that much at the very top? In other words, if I overpull C8 by 33%, what's
> to pull it flat, besides the other two C8 strings? Or are the other two
> strings enough to drag it back down? 
> 
> No, of course not. I usually decrease the overpull on the last few notes.
> Let's say I'm doing a 55-cent pitch raise - the 38% overpull should be
> about 20 cents. I would overpull A8 and all notes below about 20 cents. I
> would likely aim for 15 cent overpull on A#8, 10 cent overpull on B8 and
> only 5 cent overpull on C8. I also find that I'll decrease the calculated
> overpull on the last note or two in the upper tenor and bass. In the low
> tenor I will increase the overpull by maybe 10% of the calculated overpull.
> And in the monocord section of the bass, I'll usually double the overpull
> (about 30%). I just find that these few tweaks usually get me closer to the
> ultimate target in the end.
> 
> Terry & Paul,
> Get my pitch raising program, (for SATs), from PTJ article December 1999,
> and compare your "percentage theorems with my numbers, do the math and see
> how close you AREN"T coming to the real world of pitch raising!<G> I've
> done the work. You should try it and see if it's easier and more efficient.
> If it works, why question it?<G>
> Just my take onall this Percentages crap!
> Joe
> 
> 
> Joe Garrett, R.P.T.
> Captain of the Tool Police
> Squares R I
>