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dsp.coffee KALI
Time-Domain Boss / Bringer of Doom module for your modular synthesizer.
The core idea for KALI is that complex and musical sonic patterns/beats can be created naturally by combining a modulated audio source with a time-domain (i.e. a delay) effect, especially if the modulation is synchronized to the effect.
Kali has two major sections to facilitate this.
- 32-bit (Float) 48000khz StereoTime Domain FX Processor
- 6 x Bipolar 12-bit CV Outs (Approx -7v to 7v*) + 2 x Clocks
The L and R delay times are the main timebase to which everything else is synchronized; the rates of everything else can be adjusted in multiples of this time, both independently and (with the lfo rate knob) all at once.
** Not factory calibrated, digital fine tuning available.
Specs :
Kali is built around an Electrosmith Daisy Patch Submodule, an embedded development platform (STM32 H7 @ 480mhz) with a high fidelity PCM3060 codec.
Audio input/output is 48000khz @ 24-bit, internally 32-bit (floating point). Input gain (on PCM3060 itself) can be adjusted from -100db to +20db.
Because of the generous SDRAM on the Daisy Patch Submodule, these delay lines have a maximum time of roughly 150 seconds per channel (we cap it at 10 seconds in most modes as that has proven to be a good generally useful range, but this maximum can be changed).
CV outputs are all 12-bit, and lowpassed to mitigate aliasing. Output range is -7v to 7v, most LFO modes can be toggled between bipolar and unipolar output.
Currently their sample rate is once per block of audio, or 500hz.
Synchronization
:
Sync in by pulse/trigger or TRS MIDI In (A or B, thx to lpzwmodules). Pulse sync out x2
FX Modes :
- Synchronized basic/ping-pong delay.
- Chorus.
- Numerous granular delays / dumb harmonizers.
- Distortion (Waveshaping, Diode, Wavefolding, Saturation, Modulo) -> Delay.
- Basic delay w/ external feedback loop (Mono: L in -> L out -> Ext Loop -> R in -> R out).
- "Freeze" button - loops slices of the delay buffer.
- Master reverb (ReverbSc from daisysp)
LFO Modes :
Modulators synchronized to multiples of main delay time.
- Basic LFO: Sine, Tri, Saw, Ramp, Pulse & Polyblep Tri, Saw, Pulse.
- Sample & Hold
- Track & Hold
- Random Reset (Basic LFO Shapes)
- Random Shape
- Glacier (Basic LFO Shapes, speed / 100).
- Jitter (Basic LFO Shapes w/ random phase distortion)
- Clocks (More pulse clock out)
- Constant (Sends constant voltage out)
Features :
- Current Draw : 200 mA +12V / 75 mA -12V0 mA
- Deep : 29mm
- 24HP