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-% Example for an interconnection of signal flow diagrams.
-%
-% Author: Dr. Karlheinz Ochs, Ruhr-University of Bochum, Germany
-% Version: 0.1
-% Date: 2007/01/05
-\documentclass{article}
-\usepackage{signalflowdiagram}
-
-\begin{document}
-
-% An FIR filter
-\begin{signalflow}[node distance=9mm]{Finite impulse response filter of order $n$}%
- % building blocks
- \tikzgrid{
- \node[input] (in) {$x(t)$} &
- \node[node] (n0) {} &
- \node[delay] (d1) {$T$} &
- \node[node] (n1) {} &
- \node[delay] (d2) {$T$} &
- \node[node] (n2) {} &
- \node[coordinate] (c1) {} &
- \node[coordinate] (c3) {} &
- \node[delay] (dn) {$T$} &
- \\ &
- \node[multiplier] (m0) {$\alpha_0$} & &
- \node[multiplier] (m1) {$\alpha_1$} & &
- \node[multiplier] (m2) {$\alpha_2$} & & & &
- \node[multiplier] (mn) {$\alpha_n$}
- \\ & & &
- \node[adder] (a1) {} & &
- \node[adder] (a2) {} &
- \node[coordinate] (c2) {} &
- \node[coordinate] (c4) {} & &
- \node[adder] (an) {} &
- \node[output] (out) {$y(t)$}
- }
- % signal paths
- \path[r>] (in) -- (n0);
- \path[r>] (n0) -- (d1);
- \path[r>] (d1) -- (n1);
- \path[r>] (n1) -- (d2);
- \path[r>] (d2) -- (n2);
- \path[r>] (n2) -- (c1); % continuation
- \path[r.] (c1) -- (c3); % continuation
- \path[r>] (c3) -- (dn); % continuation
- \path[r>] (n0) -- (m0);
- \path[r>] (n1) -- (m1);
- \path[r>] (n2) -- (m2);
- \path[r>] (dn) -| (mn);
- \path[r>] (m0) |- (a1);
- \path[r>] (m1) -- (a1);
- \path[r>] (m2) -- (a2);
- \path[r>] (mn) -- (an);
- \path[r>] (a1) -- (a2);
- \path[r>] (a2) -- (c2); % continuation
- \path[r.] (c2) -- (c4); % continuation
- \path[r>] (c4) -- (an); % continuation
- \path[r>] (an) -- (out);
-\end{signalflow}
-
-\end{document}