{
  "version": 2,
  "output": { "width": 1920, "height": 1080, "fps": 30 },
  "sources": [
    { "id": "hit", "path": "assets/hit.wav" },
    { "id": "voice", "path": "assets/voice.wav" },
    { "id": "music", "path": "assets/music.wav" }
  ],
  "tracks": [
    {
      "id": "audio-sfx",
      "lane": "audio",
      "items": [
        {
          "id": "hit-1",
          "at": 15,
          "duration": 0,
          "gain_db": -6,
          "fade_in": 0.05,
          "fade_out": 0.1,
          "source": { "kind": "media", "src": "hit", "in": 0 }
        }
      ]
    },
    {
      "id": "audio-narration",
      "lane": "audio",
      "items": [
        {
          "id": "n-0001",
          "at": 30,
          "duration": 0,
          "role": "narration",
          "source": { "kind": "media", "src": "voice", "in": 0 }
        }
      ]
    },
    {
      "id": "audio-bgm",
      "lane": "audio",
      "items": [
        {
          "id": "bgm",
          "at": 0,
          "duration": 0,
          "role": "bgm",
          "gain_db": -18,
          "fade_in": 1.5,
          "fade_out": 2,
          "ducking": true,
          "source": { "kind": "media", "src": "music", "in": 4 }
        }
      ]
    }
  ]
}