> I've had my hearing tested and they don't even bother going much higher than somewhere around 12 KHz which I already perceive very, very faintly. There's als

> I've had my hearing tested and they don't even bother going much higher than somewhere around 12 KHz which I already perceive very, very faintly. There's also a difference between still being able to hear a single pure tone, and being able to discern the presence or lack of high frequencies in a more complex bit of noise.