a third filter bank receiving said input signal and being controlled by {TAIL ~ said frequency estimates} and extracting a noise signal from {HEAD ~ said input signal} 
a third filter bank receiving said input signal and being controlled by { TAIL ~ said frequency estimates } and extracting a noise signal from { HEAD ~ said input signal }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD