{
  "id": "p02",
  "title": "The Silent Transmission",
  "label": "Synthetic field-model recordings; original puzzle assets.",
  "sampleRateHz": 16000,
  "slotCount": 7,
  "leadSeconds": 0.5,
  "slotSeconds": 0.6,
  "toneStartWithinSlotSeconds": 0.15,
  "toneDurationSeconds": 0.3,
  "alignmentHint": "The second recorder began later. Match the opening carrier; the archive number identifies the delay in milliseconds.",
  "instruction": "Align the recordings, subtract what they share, and read the seven residual tones using the calibration table. The resulting word names which side of a revision to recover.",
  "files": [
    "signal-a.wav",
    "signal-b.wav"
  ],
  "frequencyTable": [
    {
      "letter": "A",
      "frequencyHz": 400
    },
    {
      "letter": "B",
      "frequencyHz": 450
    },
    {
      "letter": "C",
      "frequencyHz": 500
    },
    {
      "letter": "D",
      "frequencyHz": 550
    },
    {
      "letter": "E",
      "frequencyHz": 600
    },
    {
      "letter": "F",
      "frequencyHz": 650
    },
    {
      "letter": "G",
      "frequencyHz": 700
    },
    {
      "letter": "H",
      "frequencyHz": 750
    },
    {
      "letter": "I",
      "frequencyHz": 800
    },
    {
      "letter": "J",
      "frequencyHz": 850
    },
    {
      "letter": "K",
      "frequencyHz": 900
    },
    {
      "letter": "L",
      "frequencyHz": 950
    },
    {
      "letter": "M",
      "frequencyHz": 1000
    },
    {
      "letter": "N",
      "frequencyHz": 1050
    },
    {
      "letter": "O",
      "frequencyHz": 1100
    },
    {
      "letter": "P",
      "frequencyHz": 1150
    },
    {
      "letter": "Q",
      "frequencyHz": 1200
    },
    {
      "letter": "R",
      "frequencyHz": 1250
    },
    {
      "letter": "S",
      "frequencyHz": 1300
    },
    {
      "letter": "T",
      "frequencyHz": 1350
    },
    {
      "letter": "U",
      "frequencyHz": 1400
    },
    {
      "letter": "V",
      "frequencyHz": 1450
    },
    {
      "letter": "W",
      "frequencyHz": 1500
    },
    {
      "letter": "X",
      "frequencyHz": 1550
    },
    {
      "letter": "Y",
      "frequencyHz": 1600
    },
    {
      "letter": "Z",
      "frequencyHz": 1650
    }
  ],
  "accessibility": "Expose equal-cost numerical amplitude and frequency views from the same PCM. Do not require hearing or show a hidden plaintext answer when a slider reaches a magic offset."
}