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