Dedicating analog filter to digital synth

[Oli]

it will only work in the usual way, for mono sources. Also check your filter envelope triggering options.

[BaconTastesGood]

Good points, I totally forgot about wanting to have envelope or LFO control from the synth.

[wishy-washy]

It's a great idea, especially for digital synths that are able to generate a very dense spectrum, like fm synths. The triggering options will increase its versatility, and/or the use of an envelope follower (I really like polyphonic synths with a single filter, its a very efficient and easy way to find playful and expressive rhythmic chords !). The shruthi-1 4-pole edition is a good candidate if money matters.

[BaconTastesGood]

The Shruthi-1 would be great, just seems somewhat hard to come by these days (I don't have the skill or time or inclination to make one =) ). I was also considering maybe something like a bass envelope filter, but being mono is definitely an issue.

[wishy-washy]

I think you could setup a versatile modular setup with just a good enveloppe follower, a mixer, an eg, one lfo/vco and a filter.

[BTByrd]

Get a Happy Ending kit from Tip Top Audio and start to collect yourself a gang of Eurorack filters. They sound amazing and are voltage controllable. Add the Doepfer instrument input module to bring audio in; it has an envelope follower CV output, which is useful. Add a clock-syncable LFO / like the 4MS PEG, and you can wobble these filters in time with the rest of your track.

Maybe you'll be attracted to the Intellijel Korgasmatron, or the beautiful tone of the Tip Top Z2040 (based on the SSM 2040 of Rev. 2 Prophet 5 fame). Maybe something grittier, like the Harvestman Polivoks or Bionic Lester. Or something with vactrols, like a low pass gate from Malekko, Make Noise, or Doepfer. There are a million awesome filters in the format, with only a few snoozers. You don't need to buy 100 modules to get a lot of functionality out of modular equipment. Even 2 or 3 modules can afford a world of possibilities.

[Altitude909]

One thing that has not been brought up is that you kind of need key tracking for the filter, for single pitch sounds (i.e. drum) any filter will work but if you want it to take the place of a normal filter on a synth, those always have key tracking. Another good reason for a Shruthi (which I sell btw)

[wishy-washy]

Keytracking can be useful (I seldomly set it to 100% unless the filter is used as a source, or needs to be continuously controlled at a larger time-scale), but a good midi/cv converter with legato on/off and all the various note priority options will do the job just fine !

[foodeater]

Radias into poly evolver sounds nice. Maybe try the desktop evolver?