Examples

Example plugins covering effects, instruments, MIDI processors, and GUI framework integrations. Each one lives under examples/ in the truce repo and is small enough to read top-to-bottom in one sitting.

#Effects, instruments, MIDI

Plugin	Type	GUI
gain	Effect	Built-in
eq	Effect	Built-in
synth	Instrument	Built-in
transpose	MIDI	Built-in
arpeggio	MIDI	Built-in
tremolo	Effect	egui
state	Effect	egui
envelope	Effect	Built-in
cc-filter	Effect	Built-in
chord	Instrument	Built-in
stereo-utility	Effect	Built-in
dasp-bitcrusher	Effect	Built-in
sysex-echo	MIDI	Built-in
multiport	Instrument	Built-in
midi-inspector	Effect	Iced
mpe-spreader	MIDI	Built-in
mpe-synth	Instrument	Built-in
fundsp-reverb-simple	Effect	Built-in
fundsp-reverb-worker	Effect	Built-in

The two fundsp-reverb-* crates share a topology and signal flow but rebuild the graph differently; the fundsp integration guide walks through both.

#GUI framework comparison

The same plugin written across five GUI backends. Compare them to see how each framework handles the same layout.

#Gain (small editor, four widgets)

Plugin	GUI	Screenshot
gain	Built-in
gain-egui	egui
gain-iced	Iced
gain-slint	Slint
gain-vizia	Vizia

A sixth variant, gain-egui-aspect, is the egui gain with a 2:3 aspect-ratio lock on host resize.

A passthrough plugin that exercises every built-in widget kind (knob, slider, toggle, dropdown, meter, XY pad) across mixed grid spans and positions. Layout / widget regressions surface here before they reach the real example plugins; it's also the natural reference when picking a GUI framework.

Plugin	GUI	Screenshot
gui-zoo	Built-in
gui-zoo-egui	egui
gui-zoo-iced	Iced
gui-zoo-slint	Slint
gui-zoo-vizia	Vizia

The slint + vizia variants live under crates/truce-{slint,vizia}/examples/ (their own Cargo sub-workspaces — see the vizia integration guide for why) rather than the top-level examples/ directory.

#Block DSP

Plugin	Demonstrates	Screenshot
block-gain	`truce_simd::math::db_to_linear_block`
block-drywet	`truce_simd::ops::mix_block`
block-gate	`truce_simd::ops::abs_max_block` + `zero_block`
block-saturate	`truce_simd::math::tanh_block`
block-widen	`truce_simd::ops::mac_block`
block-surround-meter	`truce_simd::math::linear_to_db_block`

Each block-* example isolates one truce_simd::ops::* or truce_simd::math::* shape. See the SIMD section of the processing guide for the design.

#Out-of-tree

Larger examples live in their own repos — useful when you want to see what truce looks like at the scale of a real plugin rather than a 100-line teaching example.

#Reiss & McPherson effects

15 effects ported from Reiss & McPherson's Audio Effects: Theory, Implementation and Application (originally Juan Gil's JUCE implementations). Sources in reiss-mcpherson-effects.

Plugin	Effect	Screenshot
reiss-delay	Circular-buffer delay
reiss-vibrato	LFO-modulated delay (pitch wobble)
reiss-flanger	Modulated short delay + dry sum
reiss-chorus	Multi-voice ensemble chorus
reiss-pingpong	Cross-channel ping-pong delay
reiss-parametric-eq	Single-band parametric EQ (7 shapes)
reiss-wahwah	Manual / LFO / envelope wah
reiss-phaser	Cascaded all-pass phaser
reiss-tremolo	LFO amplitude modulation
reiss-ringmod	Ring modulation
reiss-compressor	Compressor / expander / gate
reiss-distortion	5-shape waveshaper + tone shelf
reiss-panning	Panorama+precedence / ITD+ILD pan
reiss-robotization	Phase-vocoder robot / whisper
reiss-pitchshift	Phase-vocoder pitch shifter

#Utility plugins

Plugin	What it shows
truce-analyzer	Real-time spectrum analyzer with diff overlay; non-trivial GUI built on truce.

#Project structure

Each example follows the same layout:

examples/<name>/
├── Cargo.toml
└── src/
    └── lib.rs

GUI framework examples may have additional files:

examples/gain-slint/
├── build.rs              # slint-build compilation
└── ui/
    └── main.slint        # declarative UI markup