Output node for node-red for tts (text to speech). Let your computer speak the entered text.
You should be lucky. All you need is preinstalled.
Linux support involves the use of Festival, which uses decidedly less friendly names for its voices.
It simply does a native shell call to PowerShell and it works fine for standard use.
Switch to your Node-RED project directory and run the following command:
npm install node-red-contrib-say