esbiko.com

{
  "type": "object",
  "properties": {
    "motion": {
      "type": "string",
      "enum": [
        "approaching",
        "receding",
        "stationary"
      ],
      "description": "Whether the source moves toward, away from, or stays still relative to the observer."
    },
    "sourceSpeedMps": {
      "type": "number",
      "minimum": 0,
      "maximum": 150,
      "description": "Non-negative source speed in metres per second; direction comes from motion."
    },
    "emittedFrequencyHz": {
      "type": "number",
      "minimum": 100,
      "maximum": 1000,
      "description": "Emitted pure-tone frequency in hertz."
    },
    "sourcePositionM": {
      "type": "number",
      "minimum": 0,
      "maximum": 1000,
      "description": "Source position on Esbiko's 0–1000 metre horizontal coordinate."
    },
    "observerPositionM": {
      "type": "number",
      "minimum": 0,
      "maximum": 1000,
      "description": "Observer position on Esbiko's 0–1000 metre horizontal coordinate."
    },
    "observerVelocityMps": {
      "type": "number",
      "minimum": -100,
      "maximum": 100,
      "description": "Signed observer velocity in metres per second; positive is rightward."
    },
    "instrument": {
      "type": "string",
      "enum": [
        "sine",
        "saw",
        "square",
        "organ",
        "brass",
        "drone"
      ],
      "description": "Exact-frequency sound used for the experiment."
    }
  },
  "required": [
    "motion"
  ],
  "additionalProperties": false
}