Initial release: 8-bit sound synthesizer with LLM/MCP integration
Soundgen is a Rust workspace for generating 8-bit/chiptune sound effects, UI sounds, and ambient textures for game audio assets. It features JSON-first sound specs, an MCP server for LLM tool-use, an egui GUI editor, and a runtime library with NES-authentic DAC emulation. Features: - 6 voice types: pulse, triangle, noise, DPCM, wavetable, FM - Effects: ADSR envelope, frequency sweep, biquad filter, vibrato - 13 built-in presets (SFX/UI/ambient) as JSON data files - MCP server: list_presets, generate_sfx, render_sound tools - Pattern-based sequencer (JSON song format) - egui GUI: virtual keyboard, preset browser, channel editor, undo/redo - Runtime: NES nonlinear DAC + SoundBank for game embedding - 90 tests, 0 warnings Crates: - soundgen-core: synthesis engine (no I/O) - soundgen-fmt: SoundSpec JSON schema + PresetRegistry - soundgen-io: WAV writer + audio playback - soundgen-seq: sequencer (patterns, songs) - soundgen-cli: gen/render/render-song/list-presets - soundgen-mcp: MCP server for LLM integration - soundgen-gui: egui editor - soundgen-runtime: NES DAC + SoundBank
This commit is contained in:
Emil
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{
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"name": "drone",
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"duration": 5.0,
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"sample_rate": 44100,
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"channels": [
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{
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"type": "triangle",
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"frequency": { "start": 55, "end": 55 },
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"envelope": { "attack": 1.0, "decay": 0.0, "sustain": 0.9, "release": 1.0 },
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"volume": 0.4,
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"pan": -0.3
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},
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{
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"type": "triangle",
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"frequency": { "start": 82.5, "end": 82.5 },
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"envelope": { "attack": 1.5, "decay": 0.0, "sustain": 0.7, "release": 1.0 },
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"volume": 0.3,
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"pan": 0.3
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},
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{
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"type": "pulse",
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"duty": 12,
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"frequency": { "start": 110, "end": 110 },
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"envelope": { "attack": 2.0, "decay": 0.0, "sustain": 0.3, "release": 1.0 },
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"volume": 0.15,
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"pan": 0.0
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}
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]
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}
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{
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"name": "rain",
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"duration": 5.0,
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"sample_rate": 44100,
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"channels": [
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{
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"type": "noise",
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"mode": "white",
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"frequency": 10000,
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"filter": {
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"type": "highpass",
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"cutoff": 2000,
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"q": 0.7
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},
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"envelope": { "attack": 0.5, "decay": 0.0, "sustain": 0.5, "release": 0.5 },
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"volume": 0.15,
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"pan": 0.0
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},
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{
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"type": "noise",
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"mode": "white",
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"frequency": 8000,
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"filter": {
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"type": "lowpass",
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"cutoff": 1500,
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"q": 0.5
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},
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"envelope": { "attack": 0.8, "decay": 0.0, "sustain": 0.4, "release": 0.5 },
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"volume": 0.1,
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"pan": 0.0
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}
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]
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}
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{
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"name": "wind",
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"duration": 5.0,
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"sample_rate": 44100,
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"channels": [
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{
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"type": "noise",
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"mode": "white",
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"frequency": 6000,
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"filter": {
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"type": "lowpass",
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"cutoff": 800,
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"q": 0.5
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},
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"envelope": { "attack": 1.0, "decay": 0.0, "sustain": 0.8, "release": 1.0 },
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"volume": 0.3,
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"pan": -0.2
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},
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{
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"type": "noise",
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"mode": "white",
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"frequency": 4000,
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"filter": {
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"type": "lowpass",
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"cutoff": 400,
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"q": 0.5
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},
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"envelope": { "attack": 1.5, "decay": 0.0, "sustain": 0.6, "release": 1.0 },
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"volume": 0.25,
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"pan": 0.2
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}
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]
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}
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{
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"name": "coin",
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"duration": 0.15,
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"sample_rate": 44100,
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"channels": [
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{
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"type": "pulse",
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"duty": 50,
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"frequency": { "start": 800, "end": 1200, "curve": "exponential" },
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"envelope": { "attack": 0.001, "decay": 0.04, "sustain": 0.0, "release": 0.1 },
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"volume": 0.5,
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"pan": 0.0
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}
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]
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}
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{
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"name": "explosion",
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"duration": 0.8,
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"sample_rate": 44100,
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"channels": [
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{
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"type": "noise",
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"mode": "white",
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"frequency": 12000,
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"filter": {
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"type": "lowpass",
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"cutoff": 3000,
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"cutoff_sweep": { "start": 3000, "end": 100, "curve": "exponential" },
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"q": 0.7
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},
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"envelope": { "attack": 0.002, "decay": 0.6, "sustain": 0.0, "release": 0.18 },
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"volume": 0.85,
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"pan": 0.0
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},
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{
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"type": "noise",
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"mode": "white",
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"frequency": 4000,
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"filter": {
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"type": "lowpass",
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"cutoff": 800,
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"cutoff_sweep": { "start": 800, "end": 50, "curve": "exponential" },
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"q": 1.0
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},
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"envelope": { "attack": 0.0, "decay": 0.4, "sustain": 0.0, "release": 0.1 },
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"volume": 0.5,
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"pan": 0.0
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}
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]
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}
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{
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"name": "hit",
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"duration": 0.12,
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"sample_rate": 44100,
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"channels": [
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{
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"type": "noise",
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"mode": "white",
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"frequency": 6000,
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"filter": {
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"type": "lowpass",
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"cutoff": 1500,
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"q": 1.5
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},
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"envelope": { "attack": 0.0, "decay": 0.02, "sustain": 0.0, "release": 0.08 },
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"volume": 0.7,
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"pan": 0.0
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},
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{
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"type": "pulse",
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"duty": 50,
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"frequency": { "start": 200, "end": 50, "curve": "exponential" },
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"envelope": { "attack": 0.0, "decay": 0.03, "sustain": 0.0, "release": 0.06 },
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"volume": 0.4,
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"pan": 0.0
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}
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]
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}
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{
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"name": "jump",
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"duration": 0.25,
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"sample_rate": 44100,
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"channels": [
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{
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"type": "pulse",
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"duty": 50,
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"frequency": { "start": 150, "end": 600, "curve": "exponential" },
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"envelope": { "attack": 0.005, "decay": 0.08, "sustain": 0.0, "release": 0.15 },
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"volume": 0.6,
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"pan": 0.0
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}
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]
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}
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{
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"name": "laser",
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"duration": 0.3,
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"sample_rate": 44100,
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"channels": [
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{
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"type": "pulse",
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"duty": 25,
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"frequency": { "start": 1200, "end": 80, "curve": "exponential" },
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"envelope": { "attack": 0.001, "decay": 0.1, "sustain": 0.0, "release": 0.18 },
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"filter": {
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"type": "lowpass",
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"cutoff": 4000,
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"q": 2.0
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},
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"volume": 0.55,
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"pan": 0.0
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}
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]
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}
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{
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"name": "powerup",
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"duration": 0.5,
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"sample_rate": 44100,
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"channels": [
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{
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"type": "pulse",
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"duty": 50,
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"frequency": { "start": 200, "end": 1600, "curve": "exponential" },
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"envelope": { "attack": 0.01, "decay": 0.2, "sustain": 0.3, "release": 0.25 },
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"volume": 0.5,
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"pan": 0.0
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},
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{
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"type": "triangle",
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"frequency": { "start": 100, "end": 800, "curve": "exponential" },
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"envelope": { "attack": 0.02, "decay": 0.25, "sustain": 0.2, "release": 0.2 },
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"volume": 0.3,
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"pan": 0.0
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}
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]
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}
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{
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"name": "click",
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"duration": 0.05,
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"sample_rate": 44100,
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"channels": [
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{
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"type": "pulse",
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"duty": 50,
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"frequency": { "start": 1000, "end": 1000 },
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"envelope": { "attack": 0.0, "decay": 0.0, "sustain": 0.0, "release": 0.04 },
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"volume": 0.3,
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"pan": 0.0
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}
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]
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}
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{
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"name": "confirm",
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"duration": 0.15,
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"sample_rate": 44100,
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"channels": [
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{
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"type": "pulse",
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"duty": 50,
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"frequency": { "start": 600, "end": 900, "curve": "exponential" },
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"envelope": { "attack": 0.005, "decay": 0.03, "sustain": 0.0, "release": 0.1 },
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"volume": 0.35,
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"pan": 0.0
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}
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]
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}
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{
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"name": "error",
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"duration": 0.2,
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"sample_rate": 44100,
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"channels": [
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{
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"type": "pulse",
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"duty": 50,
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"frequency": { "start": 200, "end": 150 },
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"envelope": { "attack": 0.005, "decay": 0.05, "sustain": 0.3, "release": 0.12 },
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"volume": 0.4,
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"pan": 0.0
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}
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]
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}
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{
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"name": "hover",
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"duration": 0.04,
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"sample_rate": 44100,
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"channels": [
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{
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"type": "triangle",
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"frequency": { "start": 600, "end": 900 },
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"envelope": { "attack": 0.0, "decay": 0.0, "sustain": 0.0, "release": 0.035 },
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"volume": 0.2,
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"pan": 0.0
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}
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]
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}
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