Is it possible to create a button that when pressed starts an audio in the internal speaker of the smartphone?
Hi @wox76 and welcome,
It’s easy enough to play a sound, check the following audio examples:
https://developer.playcanvas.com/en/tutorials/?tags=audio
The sound will automatically play on the default audio output device selected. There isn’t an API though to change the selected audio output device to a different one in PlayCanvas.