6.5 Envelope data

26.4023GPPAdditional decoder toolsEnhanced aacPlus general audio codecGeneral audio codec audio processing functionsTS

Before merging the actual data the per envelope frequency selection of high and low frequency resolution is merged as shown below.

,

where is defined by and is defined by

The envelope data referred to as in [1] for the left and right channels are merged into as shown below.

where is defined by and

is defined by and

is defined by and

is defined by .