Paul,
>Perhaps
> this a question which the more physics and acoustics literate folk out
> there can shed more light on.
http://hyperphysics.phy-astr.gsu.edu/hbase/sound/souspe.html?tc=40&tf=&v=&vc
=&vm=
gives the relationship of temperature and speed of sound. You need java
enabled. Enter the Centigrade number and then tab to get the other values.
At 10 degrees C (50F) the speed of sound is 337.5 m/s. At 30C (86F) it's
349.7 m/s--an increase of 3.6 %. The speed of sound is directly related to
pitch and any percentage change in speed of sound equals the same percentage
change in pitch. 3.6% is a little over a half note difference.
Nelson Zink
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