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