%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example D-6-7 on page .
%% 
%%  Copyright (C) 2007 Michel Goossens, Frank Mittelbach, Denis Roegel, Sebastian Rahtz, Herbert Vo\ss 
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 

\documentclass{ttctexaplate}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{413.44133pt}
\StartShownPreambleCommands
\usepackage{pst-osci}
\newpsstyle{sig1}{linecolor=[cmyk]{0,1,1,0},linewidth=1pt,plotpoints=2000}
\StopShownPreambleCommands
\begin{document}
\psscalebox{0.5}{\Oscillo[amplitude2=1.5,period2=50,period1=10,
    plotstyle1=sig1,combine=true,operation=add]}
\quad
\psscalebox{0.5}{\Oscillo[periodmodulation1=200,freqmod1=5,period1=30,
    plotstyle1=sig1,timediv=40,amplitude1=3,amplitude2=3,period2=200]}
\end{document}