The Google Cloud TTS service connectivity allows you to connect your own Google Cloud account to use Google Cloud TTS within the Text To Speech Action.
Usage of Google Cloud for text to speech functionality is a paid service with Google that Mix It Up does not cover. You will have to provide your own API key by visiting the Google Cloud Dashboard in this url: https://console.cloud.google.com/
Once you create your own API key, you may place it here and connect the service. All expenses and usage rate limits are billed to the user, so please be aware of your usage to avoid being overcharged.
Once you create your Google cloud Account, visit the following link to enable the API and get your API key. Make sure to restrict the API key as to not be overcharged, and enable billing quotas.
https://console.cloud.google.com/marketplace/product/google/texttospeech.googleapis.com
NOTE: Google Cloud TTS API may require you to setup billing before you are able to enable the API
You may try all the Google Cloud Voices for free by visiting the link: https://cloud.google.com/text-to-speech?hl=en
If you encounter an issue in setting up your AWS account, please visit the Mix It Up Support Discord for further assistance. When posting a support issue in there, DO NOT SHOW YOUR ACCESS KEY OR SECRET KEY as these will provide anyone access to use your AWS account's Amazon Polly service.