[pianotech] concert pitch

[Andrew & Rebeca Anderson]

There are a number of variants:  STDD - steinvey tonal deficit disorder
	Money Octave(s)
	Killer Octave(s)
probably more...

Andrew Anderson

On Apr 28, 2009, at 9:23 AM, paul bruesch wrote:

> STDD? Standard Tuning Deviation Dysfunction? Simply Terrible and  
> Decidedly a Disaster? IMWTK.
>
> On Tue, Apr 28, 2009 at 9:18 AM, Andrew & Rebeca Anderson <anrebe at sbcglobal.net 
> > wrote:
> Seems to be mostly A4=440 although some traveling orchestras request  
> 442.  I keep the non-climate controlled D at 441 per Steinway  
> recommendation for ease of accommodating requests.  More so because  
> shining hot lights on it and filling the hall up will quickly bring  
> the piano back to 440 and even lower.  I've thought about keeping it  
> at 442 but this 5yo D already has an obvious (finger in your eye)  
> case of STDD and increasing tension only exacerbates the problem.
>
> I keep the climate-controlled one at 440 and the stage-manager has  
> been thorough about keeping it plugged in.  It doesn't drift,  
> probably because it is already warm when the lid is opened.   
> Interestingly enough, it is about the same age and doesn't have  
> noticeable STDD.  Maybe a stiffer batch of spruce or perhaps, the  
> Dampp-Chaser system does what it is advertised to do...
>
> Andrew Anderson
>
>
> On Apr 28, 2009, at 9:01 AM, Renee Ingeberg wrote:
>
> I was wondering what the standard concert pitch is these days. In  
> certain parts of the world, there are different meanings on the  
> subject. What is the concert pitch for orchestras in the U.S.?
> The question comes up every once in a while...and is always followed  
> by some discussion.
> Also, does anyone know how much one raises the tension ( in  
> kilograms) in a grand when raising the pitch from 440 to 442?
>
> Renee
>
>
>
>

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