This is a nice demo! I love the 'bounce' of the 490.
And I really appreciate hearing how people go about patching things.
It never occurred to me to use an S&H that way. I promptly
dismantled a patch I was working on to try it out. VERY INTERESTING
technique...
Mike
--- In motm@yahoogroups.com, Richard Brewster <pugix@n...> wrote:
> I wanted to try something with my two MOTM 490 filters today. This
is
> what I came up with. Also this is the first sample I've uploaded.
It
> is three minutes long, hope the file isn't too large. I mistyped
the
> title in the MP3, which says "Two MOTM 390 VCFs". Oh well.
>
> The audio part of this patch is two MOTM-300 VCO square wave
outputs
> each through a separate 490, then each through a MOTM-190 VCA
driven by
> its own MOTM-800 EG. This is mixed to a stereo out. The 490's are
both
> set at 2.5 resonance and the FREQ at 7. The 1V/OCT inputs are not
used;
> the filters are not tracking with the VCOs. The wigglyness is
created
> by modulating each VCF with a fairly rapid sawtooth LFO. I used
two
> Oakley Little LFOs here, but the MOTM-320s would work fine too.
The
> sawtooths are negative in slope, i.e. falling most of the time with
a
> rapidly rising edge.
>
> The control section is made up of a CGS Infinite Melody quantized
with a
> Blacet Miniwave. The quantized output is shifted by a pair of
sample
> and holds, so that one VCO gets the voltage the other just had. I
used
> the MOTM-120R as a pulse divider to drive the gate inputs of the
800s to
> produce the rhythm. It's all clocked by a MOTM-390 LFO for the
main
> tempo. Every 8 beats a third S&H feeds a new voltage to the Bank
CV on
> the Miniwave, which has the Quantizer EPROM installed. (This third
> random stepped voltage is also patched to the tempo LFO FM input,
but
> was not used during this recording. When it is, the tempo changes
every
> 8 beats too for maximal weirdness.) I touched nothing during the
recording.
>
> I think it makes a nice demo of the timbre qualities of the 490.
It
> sounds really resonant without any other delays or phase shifts
introduced.
>
> -Richard Brewster
>
> motm@yahoogroups.com wrote:
>
> >Hello,
> >
> >This email message is a notification to let you know that
> >a file has been uploaded to the Files area of the motm
> >group.
> >
> > File : /Two-490-VCF.mp3
> > Uploaded by : pugix <pugix@n...>
> > Description : Some fun with two MOTM 490 VCFs
> >
> >You can access this file at the URL
> >
> >http://groups.yahoo.com/group/motm/files/Two-490-VCF.mp3
> >
> >To learn more about file sharing for your group, please visit
> >
> >http://help.yahoo.com/help/us/groups/files
> >
> >Regards,
> >
> >pugix <pugix@n...>
> >
> >
> >
> >