esbiko.com

{
  "type": "object",
  "properties": {
    "observerPositionM": {
      "type": "number",
      "minimum": 0,
      "maximum": 1000,
      "description": "Stationary or moving observer position in metres."
    },
    "observerVelocityMps": {
      "type": "number",
      "minimum": -100,
      "maximum": 100,
      "description": "Signed observer velocity in metres per second."
    },
    "sources": {
      "type": "array",
      "minItems": 1,
      "maxItems": 2,
      "description": "One or two sound sources sharing the visible simulation.",
      "items": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string",
            "description": "Stable source identifier used by later state reads."
          },
          "label": {
            "type": "string",
            "description": "Short human-readable source label."
          },
          "sourcePositionM": {
            "type": "number",
            "minimum": 0,
            "maximum": 1000
          },
          "sourceVelocityMps": {
            "type": "number",
            "minimum": -150,
            "maximum": 150,
            "description": "Signed velocity; positive moves right and negative moves left."
          },
          "emittedFrequencyHz": {
            "type": "number",
            "minimum": 100,
            "maximum": 1000
          },
          "instrument": {
            "type": "string",
            "enum": [
              "sine",
              "saw",
              "square",
              "organ",
              "brass",
              "drone",
              "esbiko_voice",
              "car_engine",
              "diesel_engine",
              "bus_engine",
              "tractor_engine",
              "ambulance_siren",
              "police_siren",
              "engine"
            ],
            "description": "Synthesized tone or real recorded vehicle/siren sound."
          }
        },
        "required": [
          "sourcePositionM",
          "sourceVelocityMps",
          "emittedFrequencyHz",
          "instrument"
        ],
        "additionalProperties": false
      }
    }
  },
  "required": [
    "sources"
  ],
  "additionalProperties": false
}