(poco x4 gt)

i know this is something supposed to improve sound quality
but i want to know exactly how

because it may be hard to get it ported on custom roms

and if it’s something like post-processing effect i will not care.

or does it change sampling rate or bits

or does it enable more DACs like LG does?
(i doubt such a cheap hardware includes this feature tho)

can someone tell me about this with source where i can read about?