On: Frequency-shaped background noise generators

[audiosampling]

First time this is reported to me. Please check the last slider. It produces sonic content above 16 kHz. You may have pushed that slider to the max because of a possible hearing loss. Although the sound you hear is quiet, the acoustic pressure may be higher. This is the only reason I can think of...

[kintamanimatt → audiosampling]

Actually I did -- well, to about 80% max. My calibrated profile looked a little like an inverted bell curve.

[JonnieCache → kintamanimatt]

https://en.wikipedia.org/wiki/Fletcher%E2%80%93Munson_curves