Taken at the Happy Vixen. One of the people dropping by sported an "Undertale" avatar. But what really made him stand out was a "typer" that resembled the chat dialogue boxes in the game. However, what was being typed in the typer couldn't be "heard," or rather seen, outside it. So anyone not looking at him wouldn't be able to "hear" him.
Of course one can't truly "hear" text (at least not without a special program), though to simplify explaining things about virtual reality, one adopts certain terms.