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Amplitude envelope gate AU
I think I’m missing something. Is there an app out there that triggers a gate that has an ADSR envelope? With things like iDensity, it would be helpful if I could set an ADSR, feed iDensity into the app, and have the app control amplitude that follows the shape of the ADSR. I haven’t been successful searching for an app to do this when I put together the search terms “trigger+amplitude+gate+envelope”.
My description may be a little confusing. What I want is to feed an audio signal in, and have the app shape the amplitude of the audio out based on the envelope.
Thanks!
Comments
iVCS lets you use pieces of it as AUs. I don't have it myself, but perhaps it might work in this case.
@motmeister I think you might be looking for an envelope follower like fac envolver?
http://fredantoncorvest.com/FAC_Envolver.html
Not exactly what you’re looking for, but I think FAC Transient and FAC Envolver may accomplish much the same thing.
Transient allows you to shorten or lengthen the attack and decay of sounds. Envolver generates attack/decay envelopes based on an input sound. You can send the Envolver cc out to the it’s own channel volume control. Place Envolver pre-fader so that it isn’t influenced by the volume automation.
Both are only AD envelopes, not ADSR, but effective nonetheless.
If your input is a synth type of app, it seems it would be easier to just shape its own internal ADSR how you like. If it is connected to the Amp section of the synth, it would do the same thing, I think.
Maybe you want a dynamic envelope based on a second audio input. Then the FAC apps are good for that.
Well, what if what you really want is to design an ADSR envelope and trigger it when you want, and then have that affect your input?
Design your ADSR envelope in the synth of your choice. Use Midi or manual live triggering to trigger the envelope when you want, by using a Note On message from a sequencer or your KB. The actual synth sound doesn’t matter if you are just going to be using its ADSR amplitude envelope.
Now use this setup as your input into FAC Envolver. Output the CC to control the fader on the track that contains your original audio input that you wanted to have affected by the ADSR.
I don't think I would use iVCS for any other reason, so $15 is steep for a gate effect.
Yes, I have FAC Envolver, but I haven't figured out how it would work to do what I need.
I don't think I HAVE Transient yet. So maybe that's an option.
The idea is to be able to feed it mixes and ambients, like iDensity output. as far as I can see, there's no ADSR OR AD for the main output of iDensity. Yes, for individual synths I can edit the envelope, of course. And the idea of controlling the fader is a good one. I just don't know how to hijack an ADSR/AD in an app to send it as input to FAC Envolver. I DO want a dynamic envelope. That's a perfect description. And I want to be able to trigger it with a midi note (from a sequencer OR from a controller). I'll spend some more time with Envolver to see if I can figure something out. That may be the best hope. @wim comes the closest.
I'm just trying to reduce the constant output from iDensity by gating it, and I'd like to be able to control the amplitude with an ADSR-like envelope.
Thanks for the help from all of you!
Ok. Gotcha. To elaborate, use a synth to design a sound with the envelope you want. Input this on track, and put FAC Envolver on this track in the FX slot. It will use the envelope from the synth sound you just designed, and output CC messages to match the volume changes of the input. So it will follow your envelope, and only output CC values above zero when you trigger the sound.
Now use the Midi Control in AUM to feed the CC messages from FAC Envolver to control the fader level of a second track. For the input of this track, you use your ambient mixes or iDensity output, etc.
To avoid hearing the synth sound you are using to drive FAC Envolver, you can turn off its output inside of FAC Envolver.
You might also want to take a look at perforator. If it’s rhythmic gating you’re after, then this will do a good job. You can shape the gate with attack, decay and slope. You can gate amplitude or filter, or shades in between. You can tame it with dry/wet. It can be unlocked so that left and right gating are independent. You can also set the pattern length to something odd to break out of measure-based timing. You can also muck about with modulating all its parameters to mess even more with the gating.
Kinda sounds like it will do what you want, maybe simpler than other things. I just set it up for a quick test running a drone through it, and got something pretty good in seconds.
@CracklePot : Now that sounds VERY close. I'm going to try that when I get back from walking the dog.
@Max23 : I have both, but iDensity has SIX sources and I'm wild about the extreme mashup. iPulsaret's good, I use it too, but for this purpose iDensity is what I want.
@wim : I have Perforator also. It's not a rhythmic effect I'm trying to accomplish. I like what you did though!
Once again, thanks everybody! btw, my current solution is DerVoco. Feed a simple synth with an ADSR panned left, and iDensity to the other side panned right. It works, but the audio of the synth affects the output signal. Not that THAT is all bad, it adds a nice touch, but not QUITE what I want. @CracklePot That's what it sounds like happens in FAC Envolver except you have to follow through with sending the CC to the fader.
But seriously... wouldn't it be cool if there was an app like Perforator that all it did was use an ADSR (or any) envelope to gate the output amplitude? With a midi trigger of course.
btw, anybody on here use IRC? I've been having a hell of a time getting into Undernet in the last several days. That's a whole 'nother story...
@motmeister Good luck! Hope you are successful.
BTW, I had another idea of using Model 15 as an FX plugin. I know you can run audio through it and have it be affected by the filters. What I am thinking is do the same, but run it through the ADSR instead. You may even be able to trigger it on demand by using a separate trigger connection coming from the internal KB.
If this sounds like something worth checking out, there are tutorial presets in Model 15 that are pre-wired for use as AudioFX. These would be a great starting point to work from.
I like it! Mite have to try it out just for the geek factor.
Using FAC Envolver worked really well! It had me stymied for a bit though. I didn’t realize the transport in AUM had to be running in order for Envolver to send the midi CCs. I fed a SynthMasterOne bell sound to envolver to give me the envelope. I put iDensity in Chan 2 and set it all up to control the Chan2 volume with the Envolver CC001. I started the transport and played some notes on the keyboard to play the bell, and the iDensity output amplitude followed the envelope. Cool beans!
While I have the model 15, I haven’t put in the time to get my head around it yet. I get your concept though, and hope to try THAT too.
You folks are great. VERY helpful and full of great practical ideas. I’d better go write this up for my notes so I can duplicate it.
I need to find out if I can get it to work in apeMatrix too.
@motmeister Glad to help.
happy to report it works equally well in apeMatrix. Pretty easy setup... 😁