A spoken announcement

{
  "id": "spoken_announcement",
  "category_id": "manifestation",
  "title": [
    {
      "locale": "en",
      "value": "A spoken announcement"
    }
  ],
  "description": [
    {
      "locale": "en",
      "value": "The output is played aloud in the place — a public-address announcement, a synthesized voice at a crossing or platform, an audible alarm. Reaches everyone present, including people who never looked at a screen."
    }
  ],
  "authoring_guidance": [],
  "examples": [],
  "sources": [],
  "symbol_id": "loudspeaker",
  "variables": [
    {
      "id": "additional_description",
      "label": [
        {
          "locale": "en",
          "value": "Description"
        }
      ],
      "required": false,
      "kind": "localized_text"
    }
  ],
  "shape": "hexagon",
  "icon_variants": [
    "default",
    "dark"
  ]
}