{
  "xzbt": "0.1",
  "meta": {
    "id": "minimal-audio",
    "name": "Minimal Audio",
    "version": "1.0.0",
    "author": "XZBT",
    "description": "A minimal generic exhibit exercising the Phase 3 audio graph, component, routing, and bus contracts.",
    "license": "CC0-1.0",
    "tags": ["minimal", "audio"]
  },
  "runtime": {
    "seed": 42
  },
  "parameters": {
    "level": {
      "type": "number",
      "default": 0.6,
      "min": 0,
      "max": 4,
      "step": 0.01,
      "label": "Ambient bus level"
    }
  },
  "bindings": [
    {
      "source": "parameters.level",
      "target": "audio.buses.ambient.gain"
    }
  ],
  "components": {
    "audio": {
      "partial": {
        "parameters": {
          "pitch": { "type": "number", "default": 220, "min": 20, "max": 4000, "unit": "Hz" },
          "level": { "type": "number", "default": 0.2, "min": 0, "max": 1 }
        },
        "input": false,
        "nodes": {
          "tone": { "type": "oscillator", "waveform": "triangle", "frequency": { "ref": "inputs.pitch" } },
          "shape": { "type": "filter", "mode": "lowpass", "frequency": 1800, "q": 0.7 },
          "level": { "type": "gain", "gain": { "ref": "inputs.level" } }
        },
        "routes": [
          { "from": "tone", "to": "shape" },
          { "from": "shape", "to": "level" },
          { "from": "level", "to": "output" }
        ]
      }
    }
  },
  "audio": {
    "buses": {
      "ambient": { "gain": 0.6 },
      "effects": { "gain": 0.8 }
    },
    "recipes": {
      "drift": {
        "mode": "continuous",
        "nodes": {
          "low": { "type": "component", "use": "partial", "values": { "pitch": 110, "level": 0.25 } },
          "high": { "type": "component", "use": "partial", "values": { "pitch": { "random": { "min": 320, "max": 340 } }, "level": 0.12 } },
          "wobble": { "type": "lfo", "waveform": "sine", "frequency": 0.08, "amplitude": 1 },
          "wander": { "type": "sample-hold", "rate": 0.5, "min": -6, "max": 6, "slew": "600ms" },
          "blend": { "type": "mixer" },
          "space": { "type": "reverb", "size": 0.7, "decay": "3.5s", "damping": 0.6, "mix": 0.3 },
          "trim": { "type": "gain", "gain": 0.7 }
        },
        "routes": [
          { "from": "low", "to": "blend" },
          { "from": "high", "to": "blend" },
          { "from": "blend", "to": "space" },
          { "from": "space", "to": "trim" },
          { "from": "trim", "to": "output" },
          { "from": "wobble", "to": "low.pitch", "depth": 1.5 },
          { "from": "wander", "to": "high.pitch", "depth": 1 }
        ]
      }
    }
  },
  "sounds": {
    "drift": {
      "name": "Drift",
      "tags": ["continuous", "abstract"],
      "usage": ["manual"],
      "bus": "ambient",
      "recipe": { "use": "drift" }
    },
    "tick": {
      "name": "Tick",
      "tags": ["transient"],
      "usage": ["manual", "automatic"],
      "bus": "effects",
      "recipe": {
        "mode": "oneshot",
        "nodes": {
          "hit": { "type": "impulse", "color": "white", "duration": "6ms", "amplitude": 0.9, "decay": "exponential" },
          "body": {
            "type": "resonator",
            "fundamental": 480,
            "modes": [
              { "ratio": 1, "gain": 1, "decay": "260ms" },
              { "ratio": 2.7, "gain": 0.35, "decay": "140ms" },
              { "ratio": 5.4, "gain": 0.12, "decay": "70ms" }
            ],
            "mix": 1
          },
          "place": { "type": "stereo-pan", "pan": -0.2 },
          "trim": { "type": "gain", "gain": 0.5 }
        },
        "routes": [
          { "from": "hit", "to": "body" },
          { "from": "body", "to": "place" },
          { "from": "place", "to": "trim" },
          { "from": "trim", "to": "output" }
        ]
      }
    }
  }
}