The say command is used to send synthesized speech to the remote party. The text provided may be either plain text or may use SSML tags. The following vendors are supported: google, microsoft, aws, nuance, nvidia, ibm, and wellsaid,

{
  "verb": "say",
  "text": "hi there!",
  "synthesizer" : {
    "vendor": "google",
    "language": "en-US"
  }
}

You can use the following options in the say action:

option	description	required
text	text to speak; may contain SSML tags	yes
synthesizer.vendor	speech vendor to use	no
synthesizer.language	language code to use.	no
synthesizer.gender	(Google only) MALE, FEMALE, or NEUTRAL.	no
synthesizer.voice	voice to use. Note that the voice list differs whether you are using aws or Google. Defaults to application setting, if provided.	no
loop	the number of times a text is to be repeated; 0 means repeat forever. Defaults to 1.	no
earlyMedia	if true and the call has not yet been answered, play the audio without answering call. Defaults to false	no

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