22 Mar
2010
22 Mar
'10
2:53 p.m.
Nick Copeland wrote:
Indeed a B3 emulated by an Oberheim Matrix-1000 might be no good choice,
OTOH because of the automation, you won't have any synth with a good B3
emulation to change 20 parameters during a song, while for any
"synthetic" sound e.g. from an Oberheim Matrix-1000 you might wish to
change a lot of parameters during a song and changing filter parameters
for "synthetic" sounds 128 steps are enough.
Ralf
> 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.