{HEAD ~ The filter} performs {TAIL ~ spectral subtraction} on the frames using the determined power spectral densities associated with the mixed signals of the frames to reduce noise associated with the audio signal 
performs
{ HEAD ~ The filter } performs { TAIL ~ spectral subtraction } on the frames using the determined power spectral densities associated with the mixed signals of the frames to reduce noise associated with the audio signal
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH