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expermusic
Joined: May 10, 2005 Posts: 37 Location: NJ
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Posted: Tue Jun 14, 2011 7:20 pm Post subject:
Low Pass Gate? |
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Does anyone know of a way, or perhaps an patch that enables low pass gate-like functions?
Thx!
It is obviously morethat just CVing a low pass filter and amp at the same time. How can I emulate the vactrol responses? _________________ Macbook 2.4 Unibody/Nord G2 Engine/9u of Euro Modules/Elektron Machinedrum SPS-1UW/NI Maschine/Novation Remote Zero SL MKII/ |
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blue hell
Site Admin

Joined: Apr 03, 2004 Posts: 24451 Location: The Netherlands, Enschede
Audio files: 297
G2 patch files: 320
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Posted: Wed Jun 15, 2011 3:08 am Post subject:
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I'd try a lag/smooth module for vactrol response, or maybe two to get a faster on response and a slower off response. _________________ Jan
also .. could someone please turn down the thermostat a bit.
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blue hell
Site Admin

Joined: Apr 03, 2004 Posts: 24451 Location: The Netherlands, Enschede
Audio files: 297
G2 patch files: 320
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Posted: Wed Jun 15, 2011 1:27 pm Post subject:
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Hmm .. just tried that - too complicated ;-)
Here is another idea :
seems to work sorta nice. _________________ Jan
also .. could someone please turn down the thermostat a bit.
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iPassenger

Joined: Jan 27, 2007 Posts: 1068 Location: Sheffield, UK
Audio files: 5
G2 patch files: 78
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Posted: Thu Jun 16, 2011 1:13 am Post subject:
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Jan,
Interesting patching.
I notice the keyquant turns the audio rate signal to a control one, I didn't know that it did that.
So if I get this right, the gate signal gets low passed, effectively smoothed and then sampled at the lower control rate (as you don't need it audio rate). Then acts as a envelope signal for the osc and the low pass filter? So presumably increasing the resonance on the first filter would increase the release? How could you control the sustain level or is this not usually possible with a lpg?
Also why is the constant used to pull the cutoff below minimum? Does that work?
Cheers
Ross _________________ iP (Ross)
- http://ipassenger.bandcamp.com
- http://soundcloud.com/ipassenger |
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blue hell
Site Admin

Joined: Apr 03, 2004 Posts: 24451 Location: The Netherlands, Enschede
Audio files: 297
G2 patch files: 320
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Posted: Thu Jun 16, 2011 8:40 am Post subject:
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I now wonder why I didnt just pick an envelope module ..
Yes, the quantizers can be used as blueifiers, and yes most modules will modulate below the minimum value set by knobs.
A vactrol is an LED that shines on an LDR, light = low resistance, no light is high resistance. LDRs tend to be slow, and tend to go to low resistance faster than going to high resistance. The pitch modulation from the gate (to the very low frequency filter) does this in the example above.
Well, anyway, at least it had some novelty to some  _________________ Jan
also .. could someone please turn down the thermostat a bit.
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iPassenger

Joined: Jan 27, 2007 Posts: 1068 Location: Sheffield, UK
Audio files: 5
G2 patch files: 78
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Posted: Fri Jun 17, 2011 3:15 am Post subject:
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hehe.. had a play around with this last night and I really couldn't tell the difference between using your lovely vactrol emulation (Jan) and a normal envelope. Could well be my ears though, they are crap.  _________________ iP (Ross)
- http://ipassenger.bandcamp.com
- http://soundcloud.com/ipassenger |
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blue hell
Site Admin

Joined: Apr 03, 2004 Posts: 24451 Location: The Netherlands, Enschede
Audio files: 297
G2 patch files: 320
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Posted: Fri Jun 17, 2011 9:09 am Post subject:
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Set the filter Q a bit higher, it'll then overshoot and undershoot. _________________ Jan
also .. could someone please turn down the thermostat a bit.
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