Structure of the QMF-based PS decoder. The signal is first fed through a hybrid QMF analysis filter bank. The filter-bank output and a decorrelated version of each filter-bank signal is subsequently fed into the mixing and phase-adjustment stage. Finally, two hybrid QMF banks generate the two output signals.
den Brinker et al. EURASIP Journal on Audio, Speech, and Music Processing 2009 2009:468971 doi:10.1155/2009/468971