Codecs AAC(MP4), OGG Vorbis, Opus@ 96 kbps are compared to classic MP3@128 kbps. Which is better? AAC? MP3? Opus? OGG Vorbis? The following codecs will be tested: AAC iTunes 11.2.2 Opus 1.1 Ogg Vorbis aoTuV Beta6.03 MP3 LAME 3.99.5 AAC FAAC v1.28 (Mid-Low Anchor) AAC FAAC v1.28 (Low Anchor) The homepage of the test: http://listening-test.coresv.net/ There are 40 samples. From this test, the webpage automatically allocates listeners to odd group and even group, and each listener tests odd samples or even samples. The test ends on August 30th. Thank You.