{
  "name": "drone",
  "duration": 5.0,
  "sample_rate": 44100,
  "channels": [
    {
      "type": "triangle",
      "frequency": { "start": 55, "end": 55 },
      "envelope": { "attack": 1.0, "decay": 0.0, "sustain": 0.9, "release": 1.0 },
      "volume": 0.4,
      "pan": -0.3
    },
    {
      "type": "triangle",
      "frequency": { "start": 82.5, "end": 82.5 },
      "envelope": { "attack": 1.5, "decay": 0.0, "sustain": 0.7, "release": 1.0 },
      "volume": 0.3,
      "pan": 0.3
    },
    {
      "type": "pulse",
      "duty": 12,
      "frequency": { "start": 110, "end": 110 },
      "envelope": { "attack": 2.0, "decay": 0.0, "sustain": 0.3, "release": 1.0 },
      "volume": 0.15,
      "pan": 0.0
    }
  ]
}