Audio with embedded html

Thank you Dan, we use in embedded javascript this function:
var n=new SpeechSynthesisUtterance("Serviamo il numero "+e);
window.speechSynthesis.speak(n)

It works in preview after interaction, but it doesn’t work in the player, both Android an Windows.
I see in another post that the function jQuery sound.play() should work, so it’s a specific problem with the SpeechSynthesisUtterance function?

Thanks!