In a previous video (found here: https://youtu.be/8nhfdMpue_M) I described my escape room control software, which can play background soundtrack music and sound effects saved as WAV or MP3 files by passing them to the Audio Out node of the Node-RED dashboard.
But as well as playing pre-recorded audio files, the NodeRED Audio Out node can also read out any arbitrary text string passed to it, which it does using the built-in text-to-speech engine of the operating system on which it is running. This could be Windows, Linux, or Raspberry Pi.
In an escape room, you could use this to play an audio response to user input, to read out the time remaining on the game timer, or to create an audio hint system that reacted to the current state of an Arduino or Raspberry Pi controller in the room, for example.
Part of my Escape Room Tech Advent Calender for 2019!
For my Escape Room tech projects, see https://www.patreon.com/playfultech
