{
  "name": "error",
  "duration": 0.2,
  "sample_rate": 44100,
  "channels": [
    {
      "type": "pulse",
      "duty": 50,
      "frequency": { "start": 200, "end": 150 },
      "envelope": { "attack": 0.005, "decay": 0.05, "sustain": 0.3, "release": 0.12 },
      "volume": 0.4,
      "pan": 0.0
    }
  ]
}