Basic features:
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Six resonator/filter channels
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Variable "Q" (Resonance) ranges from classic band-pass to highly resonant ringing
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Ring of 20 full-color lights displays the channel frequency
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Channel frequencies move about the scale using Rotation and Spread
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Rotation "spins" the frequencies around the scale
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Spread controls the gap between neighboring bands
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Morph creates a variable speed cross-fade when the channels are rotated or spread
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Lock buttons prevent each channel from changing in frequency (resonance can also be locked)
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Freq Nudge knobs create de-tuning effects, or are useful for picking out a precise frequency
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Frequency CV input (1V/octave) for even and odd bands (flip switch selects single or multiple channel control)
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Stereo inputs and outputs stagger the bands into evens/odds for an immersive stereo field
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Spectral content outputs for each channel (Env Out jacks) allow for vocoding (spectral transfer)
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Switch selects Fast or Slow tracking speeds, or trigger outputs
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Trigger output mode fires a trigger when envelope crosses a threshold: useful for extracting a beat from music
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Sliders and CV jacks control each filter's level
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Slew switch applies slew-limiting to the CV level jacks, which prevents clicking from clocks or triggers
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Each bank has 11 scales of 20 frequencies/notes each
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Scale banks for Western, Shrutis (India), Chromatic, Diatonic, Micro-tonal 17-note/octave, Gamelan (Pelog and
Slendro), Bohlen-Pierce 13-note tritave, Wendy Carlos's Alpha and Gamma scales. Both equal tempered and just
intonation tunings
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Rotation/Spread moves about an entire bank, or can be limited to a single scale
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White noise is normalized to the inputs, so the SMR can be used without an external signal
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Settings and LED color scheme can be saved and recalled in multiple banks
Controls and jacks:
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Filter channel level
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Six sliders set the level of each filter
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White light on each slider indicates filter level (flashes for clipping)
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Six CV inputs for level of each filter. (0 to +5V). Slider attenuates CV on jack
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Twenty full-color LEDs indicate which filters are assigned to which channel
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Colors on light ring match colors of Env Out LEDs
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Brightness of each light shows level of each filter
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Resonance (Q)
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Res (Q) CV jack (0 to +5V)
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Knob (offsets CV jack)
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Stereo input and output (divided into even/odd bands)
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Odd input jack and Even output jack serve as Mono in/out
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Clipping LED between IN jacks flickers when input is clipping (about 20Vpp or +/-10V)
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Rotation shifts frequency pattern up or down
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Rotate Clockwise trigger input (2V threshold)
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Rotate Counter-clockwise trigger input (2V threshold)
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Rotate CV jack maps any waveshape to a rotation pattern (0 to +5V)
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Spread sets the interval (spacing) between channels
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Spread CV input jack (0 to +10V)
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Knob (offsets CV value)
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Morph sets speed of cross fading rotating, spreading, or scale selection
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Morph CV input jack (0 to +10V)
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Knob (offsets CV jack)
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Scale CV input jack selects scale from current bank (0 to +5V)
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Six Env Out jacks: CV outputs that follow envelope of frequency content per band
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Fast | Slow switch selects envelope tracking speed, or Trigger output mode
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Pre/Post switch selects whether Env Out jacks track the filter before or after the slider attenuates
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0 to +8V output
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Six Lock buttons lock the frequency of each channel
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Button is lit when locked
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Rotation, Spread, Freq Nudge, Scale, and Bank will not change when locked
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Turning Q knob while holding a lock button also locks the Q value (button flashes to indicate Q-lock)
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Lock jack: locks/unlocks even or odd channels when triggered (2V threshold)
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Freq jacks: 1V/oct frequency input jacks for even and odd channels (10 octave range, 0 to +10V)
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135 | 1 switch selects if Freq jack, Freq Nudge knob, and Lock jack control all odd channels (1/3/5) or just channel 1
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246 | 6 switch selects if Freq jack, Freq Nudge knob, and Lock jack control all even channels (2/4/6) or just channel 6
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Slew switch enables slew-limiting of incoming CV on the level CV jacks (click and pop prevention)
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Amount of slew limiting is proportional to Morph setting at the time the switch is flipped on.
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Scale Rotation switch enables channels to rotate into the next/previous scale each time they rotate fully around
Note: The active voltage range for each jack is given. All jacks are tolerant of signals from -12V to +12V, but signals outside
the active range are clipped to the active range. For example, on a jack with an active range of 0 to +5V, a voltage of -4V is
seen by the SMR as 0V, and +8V is seen as +5V.
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