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Synthesizer for creating unusual sounds and soulful distortions

(72 Votes)
1.2 (Updated 13 years ago)
March 26, 2008
Reaktor 5 or lower


I wanted to make a synth that lets one play more the Jimi-Hendrix way, with distortion but also with Blues. To get the feel, assign some controllers and let your soul fly to Voodoo land while pressing keys and tweaking knobs.

The heart of the inFiltrator are two musically highly effective (but surprisingly seldom used) modules:
a wave multiplier and a filter bank. Both are extended implementations of the Doepfer modules A-137 and A-128, respectively.

The idea is to first generate a relatively simple waveform, expand its complexity by the multiplier and then attenuate individual frequencies by the filter bank. A downstream P52 filter, master envelope and chorus give the sound a final polishing. A manual is included in the download.

Usage of Dual Knobs:
Click-Draw in the center region to modify the inner knob (main parameter). Left and right regions are for the outer knob (modulation amount). Double-click in either region resets the knob and value to its default.
Right-click the little squares below the knob to invoke MIDI Learn. The left square is for the inner knob, the right one for the outer.
(Feature Request to NI: Please enable MIDI control of Mouse Areas, analog to XY-Fields!)

- Andy Wilmer for inspiring discussions. (He's a genuine modular freak!)
- Daniel Scholz, whose Reaktor implementation of the A-128 was the basis for my filter bank.
- Anonymous (maybe Jonathan Style) for the dual knobs which I further adapted to my needs. (His/her original ensemble "ontotheham" is not signed, unfortunately)
- Don Dailey for his terrific snaps.

Update 1.1:
- Poly now should work (see issues above). But keep an eye on the CPU. I've tried my best to optimize this synth, but still...

Update 1.2:
Included Don Dailey's snaps in a separate bank (and added some little variations). Check it out!

THANKS for your positive feedback!!!


10 years ago
This is a very beautiful sounding ensemble. Thank you.
Denis Mujakovic
12 years ago
I was wandering what you mean by "blues". I get it. Thanks very much for a soulful synth.
Sandy Small
13 years ago
Superb work! This is the most creative synth architecture I've seen in a long time.
Michael Barker
13 years ago
Fantastic - thanks again - I've been working alot with Shark since you posted it, and now this... very generous of you.
Storlon Infloria
13 years ago
Kimmo Kivelä
13 years ago
I have to check closely to the insides how this is made. 10.
Jason Bundy
13 years ago
Absolutely stunning! This and Shark are perfect for what I do. Thank you!
Kim Joris Boström
13 years ago
Check out Don Dailey's fresh snaps! I love them!
shawn gilbert
13 years ago
Thank you for all of your time and effort.10!
shawn gilbert
13 years ago
No offense,but you just keep getting better and better and...
Zip Boterbloem
13 years ago
Interesting sound, different from most analogue imitations
Simon Simon Hunt
13 years ago
Nice, thanks!
David Waldman
13 years ago
SICK SICK SICK SICK SICK. I will now make you a sammich.
Don Dailey
13 years ago
clever. Very nice set of snaps.
Ryan Dean
13 years ago
Thanks so much for your gorgeous synths! Those API knobs are really fuggin slick looking. I initally overlooked Shark, but I wont make that mistake again.