Here’s my attempt at making an LPG that allows for a few useful adjustments.
The “vactrol ring” and “CV Both” are using a sample of the lower part of actual Make Noise LxD’s vactrol response on a +10v offset when strike is triggered — to achieve exponential envelope.
It’s pretty simple but i’m sure i’ll be improving it.
CV Both — equivalent to level control on Optomix or Terminal (VCA/VCF open/close). It is mapped to the reversed vactrol response sample to make it exponential, like on most LPGs. Strike — feed it triggers / gates. Damping — controls the speed of the vactrol response sample playback, effectively affecting the “ring” time. 0 is original speed (that seems too long-ish). VCA Bias and VCF Bias — offsets tuning the response to make it brighter, darker, more “VCA-y” or more “VCF-y”. Experiment! I picked up ranges that seem useful to me but you can always “Edit Controls”. VCF Q — filter resonance. Again, I limited ranges to what seemed useful to me.
put the .unit file anywhere
the “vactrol” folder goes into “ER-301/samples” folder in the root of the SD card. Again, the path should be “/ER-301/samples/vactrol”
CPU level is at 13% now, i’ll think about what I can do to reduce it.
please let me know what you think! i was able to coax pretty convincing LPG stuff from it.
v 0.2 — LxPG.zip (1.2 MB)
v 0.3 – [repackaged for firmware v. 0.6.x] – lxpg.pkg.zip (1.2 MB)
(unzip, put into ER-301/packages and install via admin / package manager
thanks! certainly there’s a lot of uniqueness to the real LPGs that can’t be replicated — but that’s not the goal, i have the LxD and the mk1 Terminal too, as well as the 208r and they all sound great and different. but as a small aux thingy, especially for live setups the LxPG can be useful i hope.
Hey @joe_biomassa this is a lovely sounding unit, thank you!
How could an envelope be introduced to get that strike gate/trig and turn it into a suitable signal for cv both? That way there would be no need for external envelope.
Maybe it’s already there, but I could just tweak the tail of that.
Does it make sense?
All strike input does is triggering the sampled envelope derived from the vactrol response of an actual Make Noise LxD. So i’m guessing the best way to tweak it would be replacing the sample itself! Or patching an external envelope into CV Both.