1

I am trying to draw the diagram shown below :

enter image description here

I tried with this code (taken from http://www.texample.net/tikz/examples/noise-shaper/)

\documentclass[tikz,14pt,border=10pt]{standalone}
\usepackage{textcomp}
\usetikzlibrary{shapes,arrows}
\begin{document}
% Definition of blocks:
\tikzset{%
  block/.style    = {draw, thick, rectangle, minimum height = 3em,
    minimum width = 3em},
  sum/.style      = {draw, circle, node distance = 2cm}, % Adder
  input/.style    = {coordinate}, % Input
  output/.style   = {coordinate} % Output
}

\begin{tikzpicture}[auto, thick, node distance=10cm, >=triangle 45]
                \draw
                node at (0,0)[right=-3mm]{\Large \textopenbullet}
                node [input, name=input1] {} 
                node at (2,0)[block] (h1) {\Large $h_1(t)$}
                node at (2.5,0) (s1) {}
                node at (3.5,0)[block,right of=s1] (h2) {\Large $h_2(t)$}
                node at (5.5,0) (s2) {}
                node at (6.5,0) (s3) {};
                \draw[->](input1) -- node {$x(t)$}(h1);
                \draw[->](s1) -- node {$x(t)*h_1(t)$}(h2);
\end{tikzpicture}
\end{document}

This, sadly, do not produce the desired diagram.

I have this

enter image description here

3
\documentclass[tikz,14pt,border=10pt]{standalone}
\usetikzlibrary{arrows.meta, positioning}
\usepackage{textcomp}

\begin{document}
% Definition of blocks:
\tikzset{%
  block/.style  = {rectangle, draw, thick, minimum height = 3em, minimum width = 3em,
                   font=\large},
%  sum/.style    = {draw, circle, node distance = 2cm}, % Adder
%  input/.style  = {coordinate}, % Input
%  output/.style = {coordinate} % Output
}
    \begin{tikzpicture}[node distance = 4mm]
\coordinate[label=left:$x(t)$] (in);
\draw[{Circle[open,length=2mm]}-Triangle]
                    (in) -- ++ (1,0) node[block,right] (h1) {$h_1(t)$};
\draw[-Triangle]    (h1.east) -- ++ (1,0) node[right] (h2) {$x(t)*h_1(t)$};
\draw[-Triangle]    (h2.east) -- ++ (1,0) node[block,right] (h3) {$h_2(t)$};
\draw[-Triangle]    (h3.east) -- ++ (1,0) node[right] (h4){$y(t) = [x(t)*h_1(t)*h_2(t)$};
%
\node[block, below=of h3] (h5) {$h_1(t)*h_2(t)$};
\draw[Triangle-]    (h5.west) -- ++ (-1,0) node[left]  {$x(t)$};
\draw[-Triangle]    (h5.east) -- ++ ( 1,0) node[right] {$y(t)$};

    \end{tikzpicture}
\end{document}

enter image description here

1

Just for fun.

\documentclass{article}
\usepackage{mathtools}

\newsavebox{\tempboxa}
\newsavebox{\tempboxb}

\begin{document}
\begin{gather*}
x(t)\rightarrow
\fbox{$\displaystyle h_1(t)$}\rightarrow
x_1(t)\ast h_1(t)\rightarrow
\fbox{$\displaystyle h_2(t)$}\rightarrow
y(t) = [x_1(t)\ast h_1(t)]\ast h_2(t)\\
x(r)\rightarrow
\fbox{$\displaystyle h_1(t)\ast h_2(t)$}\rightarrow
y(t)
\end{gather*}
% align/center boxes
\savebox{\tempboxa}{\fbox{$\displaystyle h_2(t)$}}%
\savebox{\tempboxb}{\fbox{$\displaystyle h_1(t)\ast h_2(t)$}}%
\begin{align*}
x(t)\rightarrow
\fbox{$\displaystyle h_1(t)$}\rightarrow
x_1(t)\ast h_1(t)\rightarrow
\null\hspace{0.5\wd\tempboxa}&\mathclap{\usebox\tempboxa}\hspace{0.5\wd\tempboxa}\rightarrow
y(t) = [x_1(t)\ast h_1(t)]\ast h_2(t)\\
x(r)\rightarrow
\null\hspace{0.5\wd\tempboxb}&\mathclap{\usebox\tempboxb}\hspace{0.5\wd\tempboxb}\rightarrow
t(t)
\end{align*}
\end{document}

demo

Your Answer

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Not the answer you're looking for? Browse other questions tagged or ask your own question.