Archive of the former Yahoo!Groups mailing list: MOTM

A discussion on AH awhile back led me to experiment last night with using my
MOTM system to simulate Moog "fatness". The MOTM VCOs already have a very
musical full sound, but are very precise. You can simulate vintage equipment
by programming pitch instability and grit into the MOTM system.

Try this for a fun fatness addition to the regular old unison tuned "Dual
VCO->VCF->VCA" patch:

1. Run the Random voltage from the MOTM-100 into an extra VCF audio input
such as one of the MOTM-410 In jacks. Run the filter output to a MOTM-300 CV
input. Crank the filter down very low, no resonance and crack up the 300 CV
input to hear the result. You can tame the wildness of the Random voltage if
you filter low enough. I fed a little negative CV to my filter to make it
filter a little bit lower. The more you filter, the less amplitude the
output will have, so you will need to play with the VCO CV amount. Voila,
controlled instability! Now add this VCO to a second stable one tuned in
unison for some fatness.

2. Add a tiny amount of white noise to the second VCO CV input. It should be
almost subliminal.

3. Add a tiny amount of pink noise to CV the VCF that the VCOs are plugged
into. Again, it should be almost subliminal. Run your 410 VCO audio inputs
above 6 to add some distortion.

Note that in order to try all three of the above suggestions simultaneously,
you need 2 VCFs - one to filter the Random CV, one to filter the VCOs. You
should be able to dirty things up nicely. Play with turning the various CV
amounts off to hear the clean versus dirty versions of the same patch.

BTW, using a VCF to filter control voltages works great for mangling fast
running LFO waveforms also. A VCF won't generally filter a long way into the
subaudio range, however. That's why you buy a Lag Processor module later
when Paul releases it! My little CV filtering trick as outlined above
actually would work better with a lag processor, which is optimized for low
frequency control voltage filtering.

Moe