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README.md
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README.md
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# SuperDirt Voltage
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A small set of SuperDirt synths and Tidal helpers to control modular synths. No MIDI required!
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A small set of SuperDirt synths and Tidal helpers to control modular synths. No
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MIDI required!
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**2023 updates:**
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- nDef synths
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- Added `saw`, `lfo` triggered LFOs
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- `amp` now controls the scale of `gate`, `voltage`, `saw`, `ar`, and `lfo`
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---
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### nDefs
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Defining `nDef` synths provide a constant signal between cycles and
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instructions.
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```c
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Ndef(\cv_np).source = \nPitch;
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Ndef(\cv_np).play(0);
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~dirt.soundLibrary.addSynth(\cv, (play: {
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var latency = (~latency ? 0);
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var freq = ~freq;
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var channel = ~channel;
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var portamento = ~portamento;
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Ndef(\cv_np).wakeUp; // make sure the Ndef runs
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thisThread.clock.sched(latency - 0.025, {
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Ndef(\cv_np).set(\portamento, portamento);
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Ndef(\cv_np).set(\channel, channel);
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Ndef(\cv_np).set(\freq, freq);
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});
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})
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);
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```
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You will need to define a separate `nDef` for each instance you would like to
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use.
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```haskell
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-- you can select pitch by number
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d1 $ n "20" # s "cv"
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-- or by note name
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d1 $ n "c3" # s "cv"
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-- change channel output and/or portamento
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d1 $ n "c3 f2" # s "cv" # channel 1 # portamento 0.5
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```
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---
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The following synths, while easier to use, create a new cv instance each cycle.
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This can result in short gaps/breaks in between cycles. You can use `nDef`'s
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above to remedy this.
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### Pitch, with octave quantisation
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```
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```haskell
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-- change notes per octave on each cycle
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d1 $ pitch "0 10 8 1" # octave "<12 31 8>" # x 1
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```
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`pitch` allows a pattern of note values. `octave` sets the amount of notes per octave. The pitch and scale values will be converted to `1v/octave`. Both `pitch` and `octave` can be sequenced for some microtonal madness...
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`pitch` allows a pattern of note values. `octave` sets the amount of notes per
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octave. The pitch and scale values will be converted to `1v/octave`. Both
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`pitch` and `octave` can be sequenced for some microtonal madness...
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`glide` accepts a strengh (in semitones, relative to scale), a rate (in step length).
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`glide` accepts a strengh (in semitones, relative to scale), a rate (in step
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length).
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```
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```haskell
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-- glide to pitch
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d1 $ pitch "0 10 8 1" # scale "<12 31 8>" # x 1 # glide 12 0.5
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```
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### Gate
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```
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```haskell
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-- sequence gate inputs
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d2 $ gate "0 1 0 0 1 1 1" # x 2
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```
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`gate` will take a 0/1 pattern and return +5v signals for the `1` values. Use `-1` if you need a -5v.
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`gate` will take a 0/1 pattern and return +5v signals for the `1` values. Use
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`-1` if you need a -5v.
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### Voltage automation
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```
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```haskell
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-- create stepped automation
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d3 $ volt "1 0.2 0.5 -0.2" # x 3
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```
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@ -47,55 +98,60 @@ d3 $ volt "1 0.2 0.5 -0.2" # x 3
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### ADSR/AR
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```
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```haskell
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--- adsr
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d4 $ adsr 0 0.2 1 0.2 # x 4
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```
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There is also just an `ar` helper too, which has a default D and S value.
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```
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```haskell
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-- create ar
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d5 $ struct "t f t t" # ar 0 0.5 # x 5
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```
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```
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```haskell
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-- patternise ar
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d5 $ struct "t f t t" # ar (range 0.1 1 sine) "<0 0.4>" # x 5
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```
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In the above example, the attack time would grow for each triggered envelope over course of the cycle.
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In the above example, the attack time would grow for each triggered envelope
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over course of the cycle.
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### Sine LFO
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This will create an sine waveform, the sine will restart with each cycle, which gives a neat synced/trigger effect for modulations.
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This will create an sine waveform, the sine will restart with each cycle, which
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gives a neat synced/trigger effect for modulations.
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```
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```haskell
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d6 $ lfo 0.5 # x 6
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```
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### Saw LFO
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This will create a sawtooth waveform, the sawtooth will restart with each cycle, which gives a neat synced/trigger effect for modulations.
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This will create a sawtooth waveform, the sawtooth will restart with each cycle,
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which gives a neat synced/trigger effect for modulations.
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```
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```haskell
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d6 $ saw 0.5 # x 6
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```
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### Clock
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```
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```haskell
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-- clock cv output
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d6 $ clock # x 6
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```
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`clock` will output a clock cv, which matches the bpm of your tidal project. You can `slow` / `fast` this as well.
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`clock` will output a clock cv, which matches the bpm of your tidal project. You
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can `slow` / `fast` this as well.
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### Amp
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Using the `amp` modifier in Tidal Cycles will scale the output of `gate`, `voltage`, `saw`, `ar`, and `lfo`. Awesome for creating more suble modulations.
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Using the `amp` modifier in Tidal Cycles will scale the output of `gate`,
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`voltage`, `saw`, `ar`, and `lfo`. Awesome for creating more suble modulations.
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```
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```haskell
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d6 $ saw 0.5 # x 6 # amp 0.3
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```
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@ -107,12 +163,16 @@ d6 $ saw 0.5 # x 6 # amp 0.3
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Add the `voltage.scd` synths to your active SuperDirt synth definitions.
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Evaluate the `voltage.tidal` definitions after starting Tidal. These can also be added to your Tidal startup file.
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Evaluate the `voltage.tidal` definitions after starting Tidal. These can also be
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added to your Tidal startup file.
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In the above examples, `x` maps to a channel on your audio card. If you have an 8 output audio card, the `x` will likely be 0-7. If you are using an aggregate device, please refer to your Audio settings.
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In the above examples, `x` maps to a channel on your audio card. If you have an
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8 output audio card, the `x` will likely be 0-7. If you are using an aggregate
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device, please refer to your Audio settings.
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---
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### Feedback and/or additions?
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If you are actually using this, please join the community here and let me know: https://club.tidalcycles.org/t/using-tidal-to-control-modular-synths-with-cv/863
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If you are actually using this, please join the community here and let me know:
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https://club.tidalcycles.org/t/using-tidal-to-control-modular-synths-with-cv/863
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12
voltage.scd
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}).add
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);
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(
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SynthDef(\nPitch, {
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| out,
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channel = 0,
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freq = 440,
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portamento = 0 |
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var n = Lag.ar(log2(K2A.ar(freq)/440), portamento);
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var sig = LinLin.ar(n, -1, 9, 0, 1);
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OffsetOut.ar(channel, [sig]);
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}).add
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);
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)
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