In some embodiments, the method includes using an up conversion stage to up convert {HEAD ~ a recovered narrowband signal} to produce {TAIL ~ a suppression signal} 
In some embodiments , the method includes using an up conversion stage to up convert { HEAD ~ a recovered narrowband signal } to produce { TAIL ~ a suppression signal }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL