google tts

curl -H "Authorization: Bearer "$(gcloud auth application-default print-access-token) -H "Content-Type: application/json; charset=utf-8" --data "{
  'input':{
    'text':' Hello thankyou for calling to our  National Weather Service'
  },
  'voice':{
    'languageCode':'en-us',
    'name':'en-US-Wavenet-A',
    'ssmlGender':'MALE'
  },
  'audioConfig':{
    'audioEncoding':'MP3'
  }
}" "https://texttospeech.googleapis.com/v1beta1/text:synthesize?key=AIzaSyAtbcd23FAaJTKgpgaJxs" > synthesize-text.txt


sed 's|audioContent| |' < synthesize-text.txt > tmp-output.txt && tr -d '\n ":{}' < tmp-output.txt > tmp-output-2.txt && base64 tmp-output-2.txt --decode > synthesize-text-audio.mp3 && rm tmp-output*.txt

https://cloud.google.com/text-to-speech/docs/create-audio
https://cloud.google.com/text-to-speech/docs/voices

https://cloud.google.com/text-to-speech/docs/quickstart-protocol