In another implementation consistent with the present invention, {HEAD ~ a noise reduction system} comprises {TAIL ~ a converter}, a power spectral estimator, and a filter 
comprises
In another implementation consistent with the present invention , { HEAD ~ a noise reduction system } comprises { TAIL ~ a converter } , a power spectral estimator , and a filter
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH