triggering and gate with vco questions

neandrewthal · Joined: May 11, 2007 Posts: 672 Location: Canada

I can't say I've ever heard of anyone building something for an impending gig. Talk about pressure! Just curious, how did this come about? You must have had some kind of synths to create the songs you'll be performing, why can't you use those?

loss1234 · Posted: Wed Nov 14, 2007 4:55 am Post subject:

because i am crazy and like to impose harm on myself

no seriously, i never really even considered NOT using these things in my show.

AND TALK ABOUT PRESSURE!!!

now i the show is today and I JUST FINISHED

sadly, i spent almost no time figuring WHAT i will play, so i will probrably do half acoustic, half electronic improv.

but it was a good challenge for me

i got

one vco
one lfo
one filter
one vca
one ar eg

all on perfboard and put in tupperware cases!!!

its going to rock

i have been doing nothing but soldering for four days straight!!!!

and a lot of troubleshooting!!!

anyone in nyc can come on out around 10:30 to

Lucky Cat
www.theluckycat.com

245 Grand St
Brooklyn, NY 11211
(718) 782-0437
Get directions

neandrewthal · Joined: May 11, 2007 Posts: 672 Location: Canada

Sounds like fun. Wish I could be there.

loss1234 · Posted: Wed Nov 14, 2007 5:19 pm Post subject:

darn all this work and it looks like i got pushed to 9 o clock!!!

acckk

RF · Posted: Wed Nov 14, 2007 9:31 pm Post subject:

Jeese loss1234 - You coulda built another VCO if you knew you had that much time.... Confused

RF · Posted: Thu Nov 15, 2007 8:28 am Post subject:

frijitz · Posted: Thu Nov 15, 2007 11:11 am Post subject:

loss1234 · Posted: Thu Nov 15, 2007 12:08 pm Post subject:

now that my show is over, i am going to build this. btw, are all of these circuits on your site? i havent seen them on there. maybe i am looking in the wrong section. or do you not put ALL of your schematics up.

btw, how do you make your panels? what materials and dimensions do you use? i love your modular.

synthmonger · Posted: Tue Jul 08, 2008 6:04 pm Post subject:

So an HAHDHSHRH is possible?

camelneck · Joined: Sep 27, 2008 Posts: 68 Location: KY (USA)

Ian,
Awhile back, I bought several of your AD/AR EG + Delayed Pulser PCB's from Bridechambers. I'm really impressed with the performance of these simple circuits (especially the ultra snappy attack times when the attack pot is set on 0). Both the AD/AR EG and the Delayed Pulser are outstanding modular circuits since they can be used for a wide variety of applications.

As you pointed out, two or more of these modules can be used to create more complex envelopes, such as ADASR and ADADASR envelopes. For example, the output of 2 AD/AR EG's can be combined to produce an ADSR-like (or ADASR) envelopes if you fire the first AD EG immediately and use one of the delayed pulsers to delay the trigger sent to the other AR EG.

Anyway, I have a questions concerning a possible modification to your AD/AR EG.

Is there a simple way to modify the existing AD/AR EG so you could add an "end-of-cyle output pulse"? This would especially be useful when the EG is used in AD mode. When the end of the decay period is near, the output of the EG would be approaching 0V. A circuit, such as a comparator, could be used to generate this "end-of-cycle pulse" by sensing when the output of the EG is approximately 0V. The end of cycle pulse would resemble a trigger pulse and if it was coupled to the trigger input of the AD/AR EG, it would could be used to turn the EG into a LFO.

This "end-of-cycle pulse" could also be used to trigger other modules, such as other Envelope Generators or Sequencers, directly or indirectly. For example, since this pulse is generated at the end of a note's decay period, it could be used to increment a Sequencer so it would advance to the next note.

Do you have any suggestions or schematics that would provide such a function?

Thanks.
David

haima · Posted: Fri Jan 13, 2012 5:50 pm Post subject:

Hey All,

Just thought I'd post this video I made recently which demonstrates some of the sounds possible with Ian's awesome "All-In EG"...

Thanks Ian for the great design, and also Bridechamber for the PCB & Panel Very Happy

Hertz Donut & Ian Fritz "All-In EG" percussion from Patch Cables on Vimeo.

Signal source is the Hertz Donut eurorack module. Sequencing is also eurorack: Pressure Points, uScale & uStep.

Ian's envelope goes to a DIY 5U Yusynth Arp 4072 filter & DIY Oakley ARP style ring mod (built on stripboard) operating as a VCA.

Haima