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CHANGELOG.md Normal file
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0.2.0 (unreleased)
==================
* Documentation: Added a guide in the hexodsp::dsp module documentation
about implementing new DSP nodes.
* Bugfix: TriSawLFO (TsLFO) node did output too high values if the `rev`
parameter was changed or modulated at runtime.

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README.md
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# hexodsp
## HexoDSP - Comprehensive DSP graph and synthesis library for developing a modular synthesizer in Rust, such as HexoSynth.
This project contains the complete DSP backend of the modular
@ -25,6 +24,34 @@ Here a short list of features:
* Extensible framework for quickly developing new nodes at compile time
* A comprehensive automated test suite
And following DSP nodes:
| Category | Name | Function |
|-|-|-|
| IO Util | Out | Audio output (to DAW or Jack) |
| Osc | Sampl | Sample player |
| Osc | Sin | Sine oscillator |
| Osc | BOsc | Basic bandlimited waveform oscillator (waveforms: Sin, Tri, Saw, Pulse/Square) |
| Osc | VOsc | Vector phase shaping oscillator |
| Osc | Noise | Noise oscillator |
| Signal | Amp | Amplifier/Attenuator |
| Signal | SFilter | Simple collection of filters, useable for synthesis |
| Signal | Delay | Single tap signal delay |
| Signal | PVerb | Reverb node, based on Dattorros plate reverb algorithm |
| Signal | AllP | All-Pass filter based on internal delay line feedback |
| Signal | Comb | Comb filter |
| N-\>M | Mix3 | 3 channel mixer |
| N-\>M | Mux9 | 9 channel to 1 output multiplexer/switch |
| Ctrl | SMap | Simple control signal mapper |
| Ctrl | Map | Control signal mapper |
| Ctrl | CQnt | Control signal pitch quantizer |
| Ctrl | Quant | Pitch signal quantizer |
| Mod | TSeq | Tracker/pattern sequencer |
| Mod | Ad | Attack-Decay envelope |
| Mod | TsLFO | Tri/Saw waveform low frequency oscillator (LFO) |
| Mod | RndWk | Random walker, a Sample & Hold noise generator |
| IO Util | FbWr / FbRd | Utility modules for feedback in patches |
### API Examples
#### Documentation

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src/dsp/mod.rs
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Generally I recommend starting out small. Define your new node with minimal parameters
until you get the hang of all the things involved to make it compile in the first place.
Here are some hints to get you started:
**Be aware that new DSP nodes need to meet these quality guidelines to be included:**
- Clean Rust code that I can understand and maintain.
- Does not drag in huge dependency trees. One rationale here is,
that I don't want the sound of a HexoSynth patch to change (significantly) because
some upstream crate decided to change their DSP code. To have optimal
control over this, I would love to have all the DSP code
contained in HexoDSP. Make sure to link the repository the code comes
from though.
- Come with automated smoke tests like all the other nodes, most test
signal min/max/rms over time, as well as the frequency spectrum
where applicable.
- It's parameters have proper denormalized mappings, like `0.5 => 4000 Hz` or `0.3 => 200ms`.
- Provide short descriptions for the node and it's parameters.
- Provide a comprehensive longer help text with (more details further down in this guide):
- What this node is about
- How to use it
- How the parameters work in combination
- Suggestions which combinations with other nodes might be interesting
- If applicable: provide a graph function for visualizing what it does.
### Boilerplate

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src/lib.rs
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// This file is a part of HexoDSP. Released under GPL-3.0-or-later.
// See README.md and COPYING for details.
/*!
# HexoDSP - Comprehensive DSP graph and synthesis library for developing a modular synthesizer in Rust, such as HexoSynth.
/*!# HexoDSP - Comprehensive DSP graph and synthesis library for developing a modular synthesizer in Rust, such as HexoSynth.
This project contains the complete DSP backend of the modular
synthesizer [HexoSynth](https://github.com/WeirdConstructor/HexoSynth).
@ -28,6 +26,34 @@ Here a short list of features:
* Extensible framework for quickly developing new nodes at compile time
* A comprehensive automated test suite
And following DSP nodes:
| Category | Name | Function |
|-|-|-|
| IO Util | Out | Audio output (to DAW or Jack) |
| Osc | Sampl | Sample player |
| Osc | Sin | Sine oscillator |
| Osc | BOsc | Basic bandlimited waveform oscillator (waveforms: Sin, Tri, Saw, Pulse/Square) |
| Osc | VOsc | Vector phase shaping oscillator |
| Osc | Noise | Noise oscillator |
| Signal | Amp | Amplifier/Attenuator |
| Signal | SFilter | Simple collection of filters, useable for synthesis |
| Signal | Delay | Single tap signal delay |
| Signal | PVerb | Reverb node, based on Dattorros plate reverb algorithm |
| Signal | AllP | All-Pass filter based on internal delay line feedback |
| Signal | Comb | Comb filter |
| N-\>M | Mix3 | 3 channel mixer |
| N-\>M | Mux9 | 9 channel to 1 output multiplexer/switch |
| Ctrl | SMap | Simple control signal mapper |
| Ctrl | Map | Control signal mapper |
| Ctrl | CQnt | Control signal pitch quantizer |
| Ctrl | Quant | Pitch signal quantizer |
| Mod | TSeq | Tracker/pattern sequencer |
| Mod | Ad | Attack-Decay envelope |
| Mod | TsLFO | Tri/Saw waveform low frequency oscillator (LFO) |
| Mod | RndWk | Random walker, a Sample & Hold noise generator |
| IO Util | FbWr / FbRd | Utility modules for feedback in patches |
## API Examples
### Documentation