iir.flw

An analysis tool for both continuous- and discrete-time control systems. -Includes a parameter so

* IIR filter, see manual.pdf
in out 1
in FF1 z^(-1)
FF1 FF2 z^(-1)
FF1 out a
FF2 out b
out FB1 z^(-1)
FB1 FB2 z^(-1)
FB1 out -c
FB2 out -d
.pre syms z a b c d
.tf in out