In step 930, the recovery stage recovers {HEAD ~ a first set} of {TAIL ~ narrowband signals} wL using the sampled signals ym produced by the conversion stage 
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In step 930 , the recovery stage recovers { HEAD ~ a first set } of { TAIL ~ narrowband signals } wL using the sampled signals ym produced by the conversion stage
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH