Check out the video. Harmonics above Nyquist can still reflect back into the audible range. About phasing issues, it is not usually the path-difference between

Check out the video. Harmonics above Nyquist can still reflect back into the audible range. About phasing issues, it is not usually the path-difference between your two ears, but harmonic interference due to mixing the phased signals, which cancels out desirable frequencies. Although I do have another excellent Dan Worrall video for you, about the ears thing: https://youtu.be/uZ9WQDojQt8 https://youtu.be/uZ9WQDojQt8