pipe organ pitch

[Don]

Hi Don,

Organ pitch is affected by barometric pressure. I.e. the number of
molecules going over the "edge" of the pipe.

I have personally seen a pipe organ change 30 cents over night.

The organ should be at the temperature it is going to be performed on
before it is tuned, so temperature is not usually a factor.

At 03:17 PM 12/3/2005 -0700, you wrote:
>List -
>Can any of you knowledgeable people tell me the approximate amount of 
>pitch change in cents per degree of temperature change for a pipe organ?
>
>Thanks.
>
>Don

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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