Originally Posted by anetode
There are two different proven facts to reconcile. The first is that for a given song and a given codec at a high enough bitrate no one will be able to correctly ABX the difference. The second is that for yet another song, at any bitrate, may contain data that the codec screws up and results in clearly audible distortion. Fortunately, the first case is much more likely. Though if you look through the development forums of open source codecs like lame you will come across a number of "killer samples".
What this says to me is that people who claim to be able to tell the difference in all cases are very likely wrong and display a bias ingrained through their notions of common sense rather than through rigorous testing.
Anyone who doesn't do ABX testing everything is very likely wrong and subject to bias... lolr
Maybe people have better things to do than set up ABX tests over an utterly redundant issue. mp3 has audible differences which can be proven with a null test - but honestly I cant say that the differences are DBT-proof, at least not with my gear.
If you really feel like wasting time though you can create your own test or run with the files from here
I tried this with a 24/96 WAVE to 320mp3 and even then the difference is very small, and my gear is not very bright (no pun intended) so I don't like my DBT chances.
Does this mean I go and rip my whole music collection to mp3 - erm no! I want to keep a bit perfect copy of my audio.
You can feel free to save yourself $90 on a hard drive and rip everything to mp3 - you probably won't hear the difference unless your gear is very bright/revealing.
But unfortunately that doesn't do it for me - I want to wring out every last microscopic theoretical drop of SQ possible from my music - especially for archiving in case I get higher resolution gear down the line.
In the meantime I have better things to do with my time than worry about disk space lol!
Edited by drez - 2/3/12 at 10:31pm