Hi Robin,
Here is a generic shelfcascade with an arbitrary list of frequencies. The
gains are directly routed. They are in the reverse order (the first input
is the gain of the last stage).
shelfcascade(lf) = bus(lf), ls3(first(lf)) : sc(lf) // lf : list of
frequencies
with {
sc((f1, f2, lf)) = bus((f2,lf)), bs3(f1,f2) : sc((f2,lf)); // recursive
pattern
sc((f1, f2)) = _, bs3(f1,f2) : hs3(f2); // halting pattern
bus(l) = par(i, outputs(l), _); // a bus of the size of a list
first((x,xs)) = x; // first element of a list
};
Cheers,
Yann
Le ven. 19 août 2022 à 01:04, Robin Gareus <ro...@gareus.org> a écrit :
> On 8/19/22 00:24, b...@magnetophon.nl wrote:
> > Hi Robin,
> >
> > When I saw your shelving based MB compressor, I also set out to make a
> > generic N band and M channel version of it. :)
> > I ran into the same problem, and came up with this solution:
> >
> https://github.com/magnetophon/faustExperiments/blob/shelfComp/N_band_Compressor_N_chan.dsp#L47
> >
>
> Hello Bart,
>
> For the analysis stage using HP/LP you can run the filters in parallel,
> like you do in line 68-73. However when applying the gain to each band
> using a shelving filter, like I'd like to, it has to be done in sequence.
>
> > Is your WIP also online already?
>
> It is still the same that I have linked to earlier. - I have mostly
> given up on providing a generic method, and actually believe that it is
> impossible with FAUST at this point in time. But it is trivial to use
> any number of bands by just writing it out, and you don't change the
> [max] number of bands dynamically anyway.
>
> Realistically a four band version is more than sufficient when mixing or
> mastering. For Klaus' project where there's no human operator to set the
> frequencies by ear, an eight band split may be preferable.
>
> --
> robin
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