I have read how Del Fandrich describes Z = the square root of springiness multiply by inertia. Inertia should be a simple Newtonian mass measure - do you weigh the board? How do measure springiness - it could only come from the ribs - am I on the right track? How do you get this onto spreadsheet? Gene ----- Original Message ----- From: "Ron Nossaman" <rnossaman at cox.net> To: <pianotech at ptg.org> Sent: Thursday, May 28, 2009 8:57 AM Subject: Re: [pianotech] Modified L Scale with 5 note transition David Love wrote: > Speaking of modifying scales. Don’t know how much of this will come > through but here’s an example of a modified L scale with a 5 note > transition bridge that I’m playing with. You can see the shape of the > bridge by the purple line showing the speaking lengths, the five note > transition is seen where the drop in inharmonicity is. The goal is > balancing tension (red), impedance (grey) and inharmonicity. The blue > line at the bottom indicates break point %. Here's what my last one looked like. Ron N
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