FabFilter User Forum

Volcano Modulation Question

Hi all,

I just have a quick question regarding modulation with Volcano.

Basically, I have a lead sound in either Massive or Sylenth1, where I want to use Volcano as my filter rather than the inbuilt ones. I've set Volcano up to be a LP filter with an envelope generator, with the target being the frequency knob. The intention is to create a 'plucky' sound. However, no matter how much I try, it seems that the decay of the envelope will not affect the sound anyway.

Any ideas or whether I'm doing something wrong?

Thanks.

Salim

Hi Salim,

Could it be that the Sustain level of the EG is set to 1? The Decay determines the time it takes to go from maximum level to sustain level, but if you leave sustain at its maximum, you won't hear it :-)

Floris (FabFilter)

Or, you've selected the Envelope Generator and got the settings wrong. Either you're able to route the midi data to Volcano in your DAW and then you can select the round icon in the env generator to indicate it must listen to midi. Alternatively, you can have it listen to the audio input and you must select the first icon (which is the arrow pointing to a little block) and then set the threshold appropriately.

Bram

Thanks for your reply guys. However, I'm still experiencing the same thing. I'm convinced I have the right settings.

Basically, I have a LP Filter where the Freq knob is being modulated by an EG. It has no attack, some decay, "-INF" sustain and a tiny amount of release. I'm assuming that I would need the "Normal Input" icon selected, which I have done. Also, I've put the modulation level all the way up and it still has no effect.

Volcano is in an effects slot in the mixer, with the above settings in my DAW.

Salim

The only other thing I can think of (but you probably got this right..) is that the freq of the filter should be way down. If the filter is open, and you give it a positive modulation, it really can't open any further ;)
But then again, you probably got that right.
Is the Threshold control low enough? Lowering might help.

Also, did you try one of the presets and did they work? (Highpass Trigger in the MIDI Triggered category is one).

Bram

Yes, the filter is down. I've played with the threshold control but it makes no real difference either.

I've also looked for a preset but cannot find one. I've even tried some of the High Cut presets with the same modulation settings as well. That Highpass Trigger preset doesn't do what I need it to do anyway (changing it to a low pass filter doesn't work either).

I'm really stumped on this one. It is possibly a bug?

Salim

Just tried playing around the with threshold again.

Only the first note of the midi pattern from Sylenth1 is plucky.

Salim

Right, got it now. First thing you have to keep in mind that Sylenth and Massive are polyphonic (ie, with a filter per voice) and that you only get one filter with Volcano (actually, four in one, but still). So this limits you a bit compared to using the synths own filters.
I've played a bit with this setup, and if you have sounds coming out of a synth and they're too close to each other (the end of one note and the beginning of another) then the threshold of the Env Gen won't detect it and trigger a new envelope. Also, I don't think it will trigger if the Env Gen is still in its release phase while new notes are coming from the synth.
The best way to go about this is to use MIDI triggering from the same track to Volcano. So the Env Gen triggers each time a new note is played. I've tried both scenarios (one with the regular trigger and one with MIDI) and the midi one works much better for your purposes. Page 24 of the manual explains how this is done for different hosts.
Good luck! :)

Bram

Thanks Bram.

I've been trying to do it the way you've said in Logic but it still doesn't seem to working.

Perhaps this sort of function is something that could be implemented in a future update.

I just think it would be extremely convenient, especially if there multiple layers to a sound. That way they can all be routed to the same modulated filter, rather than having to tweak each filter on its own.

Thanks again for your help and patience.

Salim
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