Warning: Some posts on this platform may contain adult material intended for mature audiences only. Viewer discretion is advised. By clicking ‘Continue’, you confirm that you are 18 years or older and consent to viewing explicit content.
Though smartphones can be used to listen to music, they can't compete with high-end music players. Toward the top of that list is Sony's NW-ZX707 Walkman.
I think this article covers it more succinctly https://en.wikipedia.org/wiki/Nyquist%E2%80%93Shannon_sampling_theorem
edit:
also relevant: https://en.wikipedia.org/wiki/Delta-sigma_modulation#