A graph of log(x) looks a little like a quarter of a sine wave... is it
possible the table is read forward then backwards, then again through an
inverter?
Tim
On Thu, 19 Jul 2007, korgpolyex800 wrote:
> Well, your idea got me thinking so I quickly dropped the lookup table
> values into excel and created histograms of the table values and I see
> a linear graph, what appears to be a logarithmic or perhaps an
> exponential but no sine wave anywhere to be seen. So I wonder if the
> MG is a sine in the first place. Maybe it's just a kludge.
>
> Mike.
>
> --- In korgpolyex@yahoogroups.com, "jure zitnik" <kokoon@...> wrote:
> >
> > haha yes it's pretty obvious for this case, but i think many
> (probably most)
> > math libraries out there also use some kind of interpolated lookup
> table.
> > although there are approximation functions, they are quite time
> expensive.
> >
> > cheers,
> > jure
> >
> > On 7/18/07, korgpolyex800 <korgpolyex800@...> wrote:
> > >
> > > Hey Jure,
> > >
> > > That's good advice given that the CPU is only 8 bits and has no
> > > floating point arithmetic logic unit.
> > >
> > > LOL
> > >
> > > --- In korgpolyex@yahoogroups.com <korgpolyex%40yahoogroups.com>,
> "jure
> > > zitnik" <kokoon@> wrote:
> > > >
> > > > i think you should make sine function with a lookup table.
> > > >
> > > > cheers,
> > > > jure
> > > >
> > > > On 7/17/07, Atom Smasher <atom@> wrote:
> > > > >
> > > > > On Tue, 17 Jul 2007, korgpolyex800 wrote:
> > > > >
> > > > > > Also, square wave needs to be pulse width ratio adjustable.
> > > > > ===============
> > > > >
> > > > > very good stuff, especially that!
> > > > >
> > > > > --
> > > > > ...atom
> > > > >
> > > > > ________________________
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> >
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