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