METASONIX RK8 Filterwall Owner's Manual page 5

That alone is enough to give you incredible ability to make sounds and tones
(even non-staccato sounds) come through as "punchier" and more harmonically
aggressive. It'll give your TikTok video soundtrack that extra push.
With that logic – you can run anything through it – drum loops, pads, leads, blah
blah blah. Try any source material that is harmonically rich and get a feel for
each band in isolation, then add/subtract bands for more complex filtering
tonalities.
BUT things get REALLY interesting when you inject some CV sources into the
CV input. The CV input controls ALL of the bands, so the relative position for
each filter center frequency can be modified dramatically by the modulation
source coming in, relative to the starting point. LFOs do what you'd expect them
to, but noise sources or other modulation types (including audio rate oscillators)
will get you going in unique directions as well. Using a complex waveform LFO
will animate the RK8 in unique ways and add layers of complexity you would
NOT be able to attain with a standard filter.
Through the prototyping phases, we determined adding individual CV control
over each band was not worth the board space that didn't exist, and sweeping all
simultaneously gives a series of discrete emphasis effects across a wide range
of frequencies that truly makes this device unique.
And if you have more modules than sense, the individual outs make this a
DREAM for parallel processing of frequency bands. This is a drone composers
wet dream – take each frequency band and input into various effects units:
reverb, delay, further filters in series, or distortion, and take what was one signal
and make it into a cascading wall of nightmares.
Another experimental possibility: The RK8 is not really intended for use as a
vocoder though it could give VERY crude vocoder-like effects if one feeds
either: the output of an envelope follower, or a vco on its low bass range and
tracking a keyboard, into the CV input. It's totally unique. There is literally no
other device that does what this does, not in the modular world and not really
anywhere in pro audio. A tube vocoder would be possible but horribly
expensive. And LARGE.
Honestly, if we have to tell you how to do any more than this, you've clearly
wasted your money and you should have stuck with software with presets.