# Libvorbis aoTuV was unified with Xiph.Org's libvorbis1.3.2.
# Pre(post)-echo of the specific pattern was improved.
# The bit allotment when sound of the different type coexisted was improved.
# The calculation method of dynamic thresholds of the stereo mode was changed. This is more effective than former method.
# The part of the noise normalization processing was changed. As for this change, more correct audio energy control and reduction of the ringing are formed in the low bitrate.
http://www.geocities.jp/aoyoume/aotuv/
http://www.rarewares.org/ogg-oggenc.php
http://www.hydrogenaudio.org/forums/index.php?s=& ... c=60956&view=findpost&p=744901