Doepfer

hello brett,

yes and no.
you have to mix the original signal with the filtered one
in order to get an equalizer. you also have to invert the
filtered signal, if you want to apply cut instead of boost.

so you need a separate highpass and a lowpass filter
(for getting wide q settings without filter-ringing),
a mixer, an inverter, a polarizer, a multiple.
except for the multiple and the mixer, you would need
that for each single eq band. thinking of a four-band eq,
more than a full 3 he frame of modules is needed then.

best wishes

ingo




--- In Doepfer_a100@yahoogroups.com, "plexusy" <plexus@s...> wrote:
> hi ingo. your idea of a voltage controlled parametric filter is a 
good one! but... its already 
> been done. a regular multi-mode filter is pretty much a parametric:
> 
> - LPF, the CV controls the cutoff frequency and the res controls 
the Q of the cutoff point
> - BPF, the CV controls the centre frequency and the res controls 
the Q or spread across the 
> centre... this is a parametric
> - HPF, the same as LPF but the other shelf
> 
> the only thing missing is the boost/cut to make a regular multi-
mode filter work like a 
> parametric.
> 
> Brett
> 
> --- In Doepfer_a100@yahoogroups.com, "selfoscillate" 
<synaptic_music@y...> wrote:
> > 
> > hello list,
> > 
> > now that shawn started making suggestions for future modules,
> > how about a voltage-controlled parametric equalizer module?
> > it could have two or four bands, depending on the size of
> > the front panel. would be a bomb in combination with the
> > compressor-module shawn suggested.
> > 
> > best wishes
> > 
> > ingo