ok, i have been searching thru various websites on how to tell if a 320 kbps mp3 file (cbr or vbr) really is a 320 kbps mp3 file (not converted from 128kbps). i have a two identical 320kbps mp3 files but from two different sources (one is directly converted from flac and the other directly from the internet). of course, i can't tell the difference using my ears, but when i use a software called spek that acts as a so-called 'good' spectrogram, u will be able to see the difference somehow. here is what i got:
as you can see, there is a clear difference at the ceiling from 16khz to 20khz. but i do not know what that means...
and that is why i hope someone could tell me what is that difference, and if can, which one is better??!! thanks!!
Edited by justcurious - 11/18/12 at 1:35am