The Auristics page says that auristics can function as a proxy for a wizard's sense, so it seems like you should be able to hear what a person is saying by focusing on their aura
But noise is not an inherent physical property, unlike heat and appearance
On the other hand, neither is taste, but you can "taste" things with auristics, even though taste is just your brains interpretation of a chemical reaction, so obviously there's some translation from the physical property of the thing to what you can learn using auristics
So if you focused on someone's aura, would you be able to just "hear" what they're saying? Or would you have to work it out or something from their lip movements and throat vibrations? Or is it just not possible?