I was reading about AAC on Wikipedia and I found this intriguing line:
Now I've found a examples of people who have managed to pass ABX tests using 128k AAC files floating around online, but I made a fun video with my friends to do some ABX testing of 128k AAC files.
Obviously the conditions were less than ideal in terms of background noise, but there is some more information in the description of the video about the parameters of the test.
Now after making this video I am really interested in other people's results and particularly in finding particular tracks that 128k AAC does NOT do so well with. I'd love to know if there are any test tracks where not even 256k AAC is enough to achieve a transparent result, and in particular what AAC coding really tends to fail on....
Edited by a_recording - 2/21/14 at 12:07am