There has been significant advancement since the last 64kbps test. The Nero HE-AAC and Aoyumi Vorbis encoders improved, Apple added HE-AAC capability, and we have a new low delay codec with high quality: CELT.
The following codecs are presented in this test:
Ogg Vorbis 2011 (AoTuV 6.02b)
Public listening test
Even the single result is helpful