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...> > > > > > > > >
Message
Re: Fun with 490s
2004-01-19 by Mike Marsh
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