It turned out that CoreAudioToolbox 7.9.8.x or greater (upto 7.10.9.0, the latest version at the moment) can produce gliches on the encoded result. The issue is only found on AAC CBR mode.

Seq2SeqSharp is a tensor based fast & flexible deep neural network framework written by .NET (C#). It has many highlighted features, such as automatic differentiation, different network types ...