A synth interface, on the surface, is just more knobs. So we look to creator Stephan Schmitt to find out what makes his synth invention tick – and his thoughts on synth-building philosophy. Click for larger version of the UI, which you can access to create your own sounds if you have a copy of Reaktor.
If you think there aren’t still exciting things happening in synthesizer design in the age of software, you haven’t met people like Stephan Schmitt. Schmitt, founder of Native Instruments and the “mastermind” of Reaktor, could be seen as a mad sonic scientist behind NI. When I met him for dinner in Berlin in October, he had brought along a stack of signal flow diagrams and Reaktor screen grabs in plastic sheet protectors. I knew something brilliant was coming.
Native Instruments calls Schmitt’s latest creation “Spark,” but I like to think of it as the Schmitt Box – like a mysterious, powerful invention from a designer who loves to experiment. Stephan has been evolving the instrument in Reaktor through some 160 iterations. He uses foot pedals to modulate the sound live, and rails against the evils of dull, repeating LFOs. Spark ships as a Kore soundpack, so for US$59 you can fire it up right away and start playing, even without knowing how it works. Even better, though, is if you have a copy of Reaktor 5, because you can use the full-blown UI seen here to design your own sounds or even dig into the plumbing of the patch beneath. (It’s still worth looking at the Kore sound presets, because they’re consistent with Stephan’s approach of designing the sound for live performance.)
Reaktor Spark [info, download]
I think it’s telling that, while Stephan’s emphasis is on playability, he brought those signal diagrams. It’s tough sometimes to put the nuances of synths into words. NI’s own description, that Spark “combines powerful subtractive synthesis with a sophisticated array of internal feedback loops and various other special sound shaping features” doesn’t quite cover it.
So, I instead asked if we could use Stephan’s own words to describe the new instrument. The following is an excerpt from the guide he wrote for sound designers working on presets for Spark. (Scroll to the end for full diagrams of the signal routing inside, fellow geeks!)
If you’re new to this stuff, this will give you some insight into why Spark sounds the way it does. And if you’re a synth designer yourself, I think you’ll really appreciate Stephan’s personality and approach. And it encourages me that, even with a lot of repetition of basic elements (subtractive synthesis, a feedback loop), there are still many possibilities for personal, idiosyncratic instruments to explore.
Here are Stephan’s thoughts:
In the beginning, the design was inspired by "Weedwacker", a Reaktor instrument created in
the year 2000 by Siegmar Kreie. The main concept behind the Weedwacker was the feedback
of the filtered signal to the pulse-width modulation input of a pulse oscillator. The result was a
surprisingly-complex behavior of the simple one-oscillator/one-filter structure. The rich and
organic sound was appreciated by many users. Another influence was the Evolver from Dave
Smith, a hybrid concept with some interesting feedback paths.
The structure of Spark reflects my personal preferences in regards of synthesizers. Instead of creating a full-blown mega/multi-purpose synth, I try to keep it as small as possible and with a
special character.
A main goal is to allow dramatic real-time influence on the sound source. The synth itself offers
only a few simple automatic movements (2 envelopes and 1 monophonic LFO). Like a natural
instrument, it needs to be played expressively and therefore stays a challenge for the player
and the sequencer programmer.
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