auxide-dsp

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DSP utilities and trait-based nodes for Auxide 0.2. This crate supplies helper functions, wavetable and window generators, and NodeDef-based DSP blocks that plug into the Auxide kernel via NodeType::External.

RT-safe: no allocations in process paths; all buffers preallocated during init.
Helpers: dB/linear conversions, phase increments, ms-to-samples, polyblep, interpolation.
Tables: sine/saw/square/triangle wavetables, Hann/Hamming/Blackman windows.
Nodes: Oscillators, Filters, Envelopes, LFO, Effects, Dynamics, Shapers, Pitch/Time, Utility.
Builders: SynthBuilder, EffectsChainBuilder for easy graph construction.

Auxide Ecosystem

Crate	Description	Version
auxide	Real-time-safe audio graph kernel	0.3.0
auxide-dsp	DSP nodes library	0.2.0
auxide-io	Audio I/O layer	0.2.0
auxide-midi	MIDI integration	0.2.0

Status

✅ Architecture: Clean trait-based design with proper separation of concerns
✅ RT-Safety: Verified zero allocations in process_block paths (dhat profiler tests)
✅ Test Coverage: Basic functionality tests for all nodes
✅ RT Allocation Tests: Comprehensive heap profiling validates RT guarantees
📋 Node Coverage: ~40 nodes implemented, missing ~10 for full synthesis toolkit

See AUDIT_REPORT.md for detailed analysis.

Usage

Add to your Cargo.toml:

[dependencies]
auxide = "0.2"
auxide-dsp = { path = "../auxide-dsp" }

Example

use auxide_dsp::builders::SynthBuilder;
use auxide_dsp::nodes::oscillators::SawOsc;
use auxide_dsp::nodes::filters::SvfFilter;
use auxide_dsp::nodes::filters::SvfMode;

let graph = SynthBuilder::new()
    .add_oscillator(SawOsc { freq: 440.0 })
    .add_filter(SvfFilter {
        cutoff: 1000.0,
        resonance: 0.5,
        mode: SvfMode::Lowpass,
    })
    .build_graph();

See examples/ for more usage.

Community & Support

• 🐛 Bug Reports: GitHub Issues • 💬 Discussions: GitHub Discussions • 📖 Documentation: docs/ • 💝 Sponsorship: GitHub Sponsors • 🤝 Contributing: CONTRIBUTING.md • 📜 Governance: GOVERNANCE.md • 🔒 Security: SECURITY.md

License & Philosophy

MIT License - forever and always.

Philosophy: DSP infrastructure should be invisible. Auxide is infrastructure.

Testing Philosophy: Reliability through comprehensive validation and property-based testing.

Forever maintainer: Michael A. Kuykendall
Promise: This will never become a paid product
Mission: Making real-time audio DSP simple and reliable

auxide-dsp 0.2.0