Ron Nossaman wrote: > >Richard, > >McFerrin gives you a fine and authoritative formula for computing string > >inharmonicity. Compute for me please, using that formula, the inharmonicity > >of a B-1 string with 0.037" diameter core, and 0.093" total outer diameter > >of the wrapped section. > > > >Ron N > > My apologies, that's a B-1 string 1238mm in length. > Ron N Ok Ron... Assuming a frequency of 61,74 Hz for B1, converting 0.037" to 0.94mm, and just taking the McFerrin formula as it is you get (3.4 * 10^11 * 0.94)/(61,74^2 * 123,8^4) = 0.34 for your Inharmonicity coeficient. I havent found the mail I wanted to share about calculating for hex vs round core, which also had that discussion about why using this formular for bass strings was considered suspect if I remember correctly, but I did find another posting from that discussion tho which was interesting enough.. I will translate the whole thing in another post from the Danish. But in that Danish posting was given nearly the same thing to the McFerrin formula along with a justification for using it for Bass strings. I also bumbed into a posting you sent to the PTG list a while back with the McFerrin formula and another one that you had used some weeks hunting down for us all. -- Richard Brekne RPT, N.P.T.F. Bergen, Norway mailto:rbrekne@broadpark.no
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