.sp
.LP
These routines operate on signals in the frequency domain.
.SH
SHORT DESCRIPTION OF ROUTINES
.IP "Z-domain Response -" 20
Magnitude, power and phase response of polynomial of z.
.IP "Lowpass Filter Design -" 20
Lowpass frequency domain filter design
.IP "Highpass Filter Design -" 20
Highpass frequency domain filter design
.IP "Bandpass Filter Design -" 20
Bandpass frequency domain filter design
.IP "Bandstop Filter Design -" 20
Bandstop frequency domain filter design

