Humidity & voicing

[Marcel Carey]

This is the reason the master tuning always has to be checked aurally
just before the exam. A stored tuning can be used to start the master
tuning process, but the whole piano has to get checked by the CTE and
his helpers.

Marcel Carey,
Sherbrooke

> -----Message d'origine-----
> De : pianotech-bounces@ptg.org 
> [mailto:pianotech-bounces@ptg.org] De la part de Don
> Envoyé : 28 novembre 2005 03:13
> À : Pianotech
> Objet : RE: Humidity & voicing
> 
> 
> Hi David,
> 
> If the room where the piano exam is being held has unstable 
> humidity or temperature then yes the Master Tuning will not 
> be stable either. Whether it would be enough of a difference 
> to cause a go/no go situation would depend on a lot of 
> factors--one of them being that the exam does have a built in 
> "tolerance".
> 
> If a Master tuning was created at say 15% humidity (quite 
> possible where I
> live) and then applied to the same instrument when humidity 
> was 60% (assuming the piano was in equilibrium at the higher 
> humidity level), then the Master tuning may not "fit" as well 
> as it should.
> 
> If the piano was then put back into the 15% humidity and 
> allowed to reach equilibrium again--the Master Tuning would 
> "fit" again.
> 
> As to "fair"--well it is still "fair" because all the people 
> trying the exam have the same conditions.
> 
> 
> At 10:55 AM 11/27/2005 -0600, you wrote:
> >Don:
> > 
> >Are you saying that a Master Tuning would have to be done 
> just prior to 
> >a
> examination in order to be fair?  Does this Master Tuning 
> have a shelf life?
> > 
> >dp
> 
> Regards,
> Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T.
> Non calor sed umor est qui nobis incommodat
> 
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