I still disagree. Why is the outer part of an image less important than the center part? If you look directly at the edges of an image, don't you want them to be artifact-free just like the center part?
In posting #22 and #21 I highlighted in red the parts that made me - erroneously according to [JAZ] - fall for the "superset" explanation and I highlighted and posted them because I felt they might contradict [JAZ] when saying "That graphic does not try to say that HE-AAC is a superset of LC-AAC and that HE-AACv2 is a superset of HE-AAC.". That's all.
I have to apology since I added confusion in the aim of preventing confusion.
HE-AAC is marketed under the trademark aacPlus? by Coding Technologies and under the trademark Nero Digital? by Nero AG. Sony Ericsson, Nokia and Samsung use AAC+ to label support for HE AAC v1 and eAAC+ to label support for HE-AAC v2 on their phones. Motorola uses AAC+ to indicate HE AAC v1 and "AAC+ Enhanced" to indicate HE AAC v2.
A new AAC listening test is coming
The FAQ in the wiki about AAC may clarify a few other things that you may not understand yet.http://wiki.hydrogenaudio.org/index.php?title=AAC_FAQ
HE-AAC Profile (AAC LC with SBR) ... HE-AAC v2 Profile (AAC LC with SBR and Parametric Stereo)