Scaling Formula

[Mike and Jane Spalding]

Thanks Ron,

I'm also looking at the 3-part "thoughts on bass string design" article that prompted the Conklin letter.  Very informative stuff.

Mike

----- Original Message ----- 
From: Ron Nossaman <RNossaman@KSCABLE.com>
To: <pianotech@ptg.org>
Sent: Wednesday, May 01, 2002 5:55 PM
Subject: Re: Scaling Formula


> >List,
> >
> >There have been several mentions of a "loudness factor" - can anyone give us 
> >the formula?  I've got tension, inharmonicity, and percent breaking 
> >strength, but haven't been able to find loudness.
> >
> >thanks
> >
> >Mike Spalding, RPT
> 
> Harold Conklin published a formula for what he calls characteristic in the
> Journal in his "Thoughts on Thoughts" article. It's good enough as a
> relative loudness factor. 
> 
> One expression for Zg is: Zg = (number of strings per note) * (tension *
> mass per unit length)^0.5.
> So we can increase Zg by increasing
> the tension, core size, wrap size,
> number of strings per note, any or all.
> 
> 
> Ron N
>