node-red-labs/basic_examples/text_to_speech/tts_lab_with_param_check.json at master · watson-developer-cloud/node-red-labs · GitHub

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[{
  "id": "37db8581.e886ea",
  "type": "http in",
  "z": "1489cc91.5952e3",
  "name": "",
  "url": "/talk/sayit",
  "method": "get",
  "upload": false,
  "swaggerDoc": "",
  "x": 160,
  "y": 755,
  "wires": [
    ["8c9a4ce4.3d6da", "835ce3ce.b3bf5"]
  ]
}, {
  "id": "8c9a4ce4.3d6da",
  "type": "change",
  "z": "1489cc91.5952e3",
  "name": "Text to Payload",
  "rules": [{
    "t": "set",
    "p": "payload",
    "pt": "msg",
    "to": "payload.text_to_say",
    "tot": "msg"
  }],
  "action": "",
  "property": "",
  "from": "",
  "to": "",
  "reg": false,
  "x": 373,
  "y": 685,
  "wires": [
    ["f6322248.c9834"]
  ]
}, {
  "id": "f6322248.c9834",
  "type": "watson-text-to-speech",
  "z": "1489cc91.5952e3",
  "name": "",
  "lang": "en-GB",
  "langhidden": "en-GB",
  "langcustom": "NoCustomisationSetting",
  "langcustomhidden": "",
  "voice": "en-GB_KateVoice",
  "voicehidden": "",
  "format": "audio/wav",
  "password": "",
  "payload-response": false,
  "default-endpoint": true,
  "service-endpoint": "https://stream.watsonplatform.net/text-to-speech/api",
  "x": 473,
  "y": 756,
  "wires": [
    ["c2744b78.56f868"]
  ]
}, {
  "id": "c2744b78.56f868",
  "type": "change",
  "z": "1489cc91.5952e3",
  "name": "Speech to Payload",
  "rules": [{
    "t": "set",
    "p": "payload",
    "pt": "msg",
    "to": "speech",
    "tot": "msg"
  }],
  "action": "",
  "property": "",
  "from": "",
  "to": "",
  "reg": false,
  "x": 630,
  "y": 683,
  "wires": [
    ["2dfac931.573136"]
  ]
}, {
  "id": "2dfac931.573136",
  "type": "function",
  "z": "1489cc91.5952e3",
  "name": "Set Headers",
  "func": "// Set the content type to audio wave\nmsg.headers = {'Content-Type': 'audio/wav'};\nreturn msg;",
  "outputs": 1,
  "noerr": 0,
  "x": 740,
  "y": 756,
  "wires": [
    ["3c9b519b.eaa42e"]
  ]
}, {
  "id": "3c9b519b.eaa42e",
  "type": "http response",
  "z": "1489cc91.5952e3",
  "name": "",
  "statusCode": "",
  "headers": {},
  "x": 927,
  "y": 755,
  "wires": []
}, {
  "id": "66f76d9c.aa4434",
  "type": "template",
  "z": "1489cc91.5952e3",
  "name": "Error",
  "field": "payload",
  "fieldType": "msg",
  "format": "handlebars",
  "syntax": "mustache",
  "template": "<h1>Missing text_to_say query param!</h1>",
  "output": "str",
  "x": 720,
  "y": 880,
  "wires": [
    ["3c9b519b.eaa42e"]
  ]
}, {
  "id": "835ce3ce.b3bf5",
  "type": "function",
  "z": "1489cc91.5952e3",
  "name": "Determine whether text_to_say is null",
  "func": "if (msg.payload.text_to_say) {\n    return [msg, null];\n}\nreturn [null, msg];",
  "outputs": 2,
  "noerr": 0,
  "x": 352,
  "y": 875,
  "wires": [
    ["8c9a4ce4.3d6da"],
    ["66f76d9c.aa4434"]
  ]
}]