google tts and speech api

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

https://cloud.google.com/speech-to-text/docs/speech-to-text-supported-languages

https://cloud.google.com/speech-to-text/docs/transcribe-api

https://cloud.google.com/text-to-speech/docs/libraries#client-libraries-usage-nodejs

https://cloud.google.com/text-to-speech

• 1. Make sure billing is enabled for Speech-to-Text.
  2. Create and/or assign one or more service accounts to Speech-to-Text.
  3. Download a service account credential key.
• Set your authentication environment variable.
• (Optional) Create a new Google Cloud Storage bucket to store your audio data.

https://cloud.google.com/speech-to-text/docs/before-you-begin