[pianotech] pitch and temperature

[Ron Nossaman]

On 1/10/2011 3:14 AM, Tony Caught wrote:

Hi Tony,
> Now you say that the strings change 1/2 way through the tuning. The question
> is is this caused by the soundboard expanding or shrinking or the strings
> expanding or shrinking.

It's definitely the strings. A few degrees difference will produce a 
measurable pitch change very quickly. MC change in wood resulting from 
that small temperature change will take hours-to-days.


> Or, my head just shrinking so the sound is expanding.

"As the circle of light increases, so does the circumference of darkness 
around it".
--- Albert Einstein ---


Ron N