Description  Claims  Drawing  Cited references 

US5974380A   [0002]  [0011] 
US20070063877A1   [0006] 

Introduction to Digital Audio Coding and Standards   [0015] 
Multirate Systems and Filter Banks   [0015] 
The Penguin Dictionary of Mathematics   [0029] 
Techniques and Standards for Image, Video and Audio Coding   [0033]