> > Just 128 steps for filter cutoff for an oscillating emphasis does not
> > work well
> > if it needs to be tuned exactly to an VCO/DCO, it is basically never in tune
>
> This is wrong.
>
> The number of bits in a parameter is unrelated to where and what some
> filter is or is not tuned to.
>
Why not?
Perhaps we are referring to different things. I was talking about the number of
steps in a filter cutoff parameter - if you only have 7 bits in the filter cutoff setting
then you can only select 127 discrete cutoff frequencies. If you overdrive the filter
emphasis then it should turn into something close to a sinewave oscillator at the
frequency of the cutoff - the steps in the frequencies become audible which was a
ongoing complaint against these systems. The issue is that if you want to detune
the filter oscillating frequencies by a 0.1 HZ to get some phasing then you are out
of luck since the cutoff steps are too big. The same is true if you want to use this
filter as an extra oscillator (something that a lot of people did on the big synths to
get hammond sounds) then it doesn't tune that well,especially at the higher
frequencies where the filter was used as if it were another drawbar.
It doesn't mean the synth will not sound good, there are just some things that it
will not be able to do.
Regards, nick.
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Received on Mon Mar 22 20:15:10 2010
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