{
  "train": [
    1,
    2,
    4,
    5,
    7,
    9,
    10,
    11,
    12,
    13,
    14,
    16
  ],
  "test": [
    8,
    15,
    17
  ],
  "note": "test = P08/P15/P17 (representative, ~150 claps each); filter tier=clean, primary_channel=3"
}