Google (Beta)

Google provides fast, reliable text-to-speech (TTS) with customizable voices.

Sample configuration

The following example shows a starting tts parameter configuration you can use when you Start a conversational AI agent.

"tts": {
    "vendor": "google",
    "params": {
        "credentials": "<GOOGLE_APPLICATION_CREDENTIALS_STRING>",
        "VoiceSelectionParams": {
            "name": "en-US-Chirp3-HD-Charon"
        },
        "AudioConfig": {
            "speaking_rate": 1.0, 
            "sample_rate_hertz": 24000
        }
    }
}

caution

The parameters listed on this page are validated for use with Conversational AI Engine. Required parameters must be provided as documented. Any additional parameters are passed through directly to the underlying vendor without validation. For a full list of supported options, refer to the Google documentation.

Key parameters

paramsrequired

credentials stringrequired
The Google Cloud service account credentials JSON string used for authentication. Get your credentials from the Google Cloud Console.
VoiceSelectionParams objectrequired
Show propertiesHide properties
- name stringrequired
  The name of the voice to use, for example, en-US-Chirp3-HD-Charon or en-US-Neural2-A. See supported voices for available voice names.
AudioConfig objectnullable
Show propertiesHide properties
- speaking_rate numbernullable
  The speed of speech. Valid range is 0.25 to 2.0, where 1.0 is the normal speed. Values less than 1.0 slow down the speech, while values greater than 1.0 speed it up.
- sample_rate_hertz integernullable
  The sample rate in Hertz for the audio output, for example, 24000 or 16000. The default value depends on the selected voice.

Sample configuration​

Key parameters​

Sample configuration

Key parameters