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