A decoding method 49 wherein said adapting and grouping also segments said spectral blocks into {TAIL ~ subblocks}, and wherein said generating sample blocks effectively applies a single inverse discrete transform to {HEAD ~ pairs} of said subblocks 
A decoding method 49 wherein said adapting and grouping also segments said spectral blocks into { TAIL ~ subblocks } , and wherein said generating sample blocks effectively applies a single inverse discrete transform to { HEAD ~ pairs } of said subblocks
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH