The bit stream of WMA is composed of superframes , each containing 1 or more frames of 2048 samples .
Fundamentally , WMA is a transform coder based on modified discrete cosine transform ( MDCT ) , somewhat similar to AAC , Cook and Vorbis .
The bit stream of transform coder is composed of superframes , each containing 1 or more frames of 2048 samples .
Fundamentally , WMA is a transform coder based on modified discrete cosine transform ( MDCT ) , somewhat similar to AAC , Cook and Vorbis .