Tension per cent PR

[Mark Schecter]

baoli liu wrote:

> snip <

> So it is easy to conclude that the whole
> tension of a piano will increase 4.5% for each 4 cents
> pitch raise,if the piano is not originally way out of
> tune.

Thanks, baoli, for distilling this. Even simpler, one could say each 
cent of pitch change equals a little more than 1 percent change in 
tension - "about one percent change in tension per cent change in pitch"
or 1%/cent. I've always wanted to know this. Many thanks!

-Mark Schecter