[sdiy] stringfilter

[Ian Fritz]

k comes from the Burhans work, which uses about 5 frequencies per 
octave.  Burhans showed that k = 2.1^(1/5) = 1.160 gives minimal overlap 
between the filter frequencies and low overtones of the musical scale.

At 06:45 PM 2/17/2005, Magnus Danielson wrote:
>From: "JH." <jhaible at debitel.net>
>Subject: Re: [sdiy] stringfilter
>Date: Thu, 17 Feb 2005 00:06:22 +0100
>Message-ID: <001401c5147c$24789670$0200a8c0 at jhsilent>
>
> > > > Frequencies are the same that Ian and Bernie used (if you have the EN
> > > > article. If you don't, I can look the up.)
> > >
> > > I would have check them if I had them and then only asked if you used the
> > same.
> > >
> > > I have still not got the ENs you know (and you know why I guess). Maybe
> > one
> > > day.
> >
> > Lowest is 43.5 Hz.
> > Next is 50.4 Hz.
> >
> > f(N+1) = k * f(N)
>
>Thanks!
>
>k = 1.15862 or so I guess.
>
>Cheers,
>Magnus