triggerToneFrequency ?

{
  "id": "triggerToneFrequency",
  "result": {
    "name": "triggerToneFrequency",
    "firmware": "SoundTransmitter",
    "type": "long",
    "min": 0,
    "max": 22000,
    "units": "Hz",
    "value": 5000,
    "default_value": 5000,
    "functions": [
      "getValue",
      "setValue",
      "getDefaultValue",
      "setValueToDefault"
    ],
    "parameters": [
      "value"
    ]
  }
}

triggerToneFrequency setValue 10000