more on floating pitch

[Don]

Hi Mike,

For this instrument I'd "aim" at +5 cents. That will at least leave the
bass somewhat stable.

If you are using Reyburn's software on a laptop it is possible to "create"
a custom overpull (I prefer the words pitch correction) to leave the tenor
about 4 cents sharp tapering down to 0 {plus th e5 cent offset} at A4 and
rising to +4 {plus the 5 cents} at A6. The sole advantage is the piano will
"drift" towards being closer to "in tune" as the humidity drops.

Someone mentioned moisture master systems. This is not ideal but easier to
"care for" than a full DamppChaser system. The system, will, with a "dust
cover" for the back of uprights, take care of the "summer bulge". It does
put the piano on a low humidity "diet". (i.e. if pins are marginal probably
something to avoid).

At 01:45 PM 8/21/2008 -0500, you wrote:
>List,
>
>I need to go back through the archives and see where all the proponents 
>of floating live and work.  Surely not in the temperate zones of North 
>America.  Today I tuned a Yamaha P22 at the local elementary school.  It 
>was last tuned in March, to A=440 at about 38%RH.  Piano pitch at 68% RH 
>today was:  A0 +0, A1 +3, A2 +5, A3 +18, A4 +12, A5 +24, A6 + 35, A7 
>+20.  No matter where I decide to set the pitch of this piano, it's 
>going to require a pitch correction.  Floating wouldn't save me any time 
>or effort, nor would it improve the stability of the piano.  This is the 
>norm for the upper midwest, and I suspect for much of the country.  
>Floating might work on the coast or in the desert, but not here.
>
>Mike
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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