\documentclass[a4paper, 11pt]{report}
\usepackage{amsfonts}
\usepackage{amsmath}
\usepackage{graphicx}
\usepackage{scrtime}

% text width reasonable
\setlength{\textwidth}{15cm}


% not sure if this exists already, but just in case it does not:
% \newcommand{\comb}{\sqcup\kern-0.48em{|}\kern0.5em}

\DeclareRobustCommand{\comb}{%
\begingroup\setlength{\unitlength}{\fontcharht\font`A}%
\begin{picture}(1.1,1)
  \put(0.07,0){\line(0,1){1}} \put(0.55,0){\line(0,1){1}}
  \put(1.03,0){\line(0,1){1}} \put(0.05,0){\line(1,0){1}}
  \end{picture}%
  \endgroup
}
% Define a window symbol. Start with Pi, but make a nicer one later
\DeclareRobustCommand{\window}{
  \Pi
}
% define sinc function
\DeclareRobustCommand{\sinc}{
  \text{sinc}
}
\begin{document}

% Title page
\begin{titlepage}
  \vspace*{15cm}
 \begin{center}
   {  \parskip1em
     \bf \Huge \sffamily (Incomplete) Lecture notes for PC5201S }
   \vspace*{1cm}
   
   { \sffamily status of this document: \today, \thistime SGT}
 \end{center}
\end{titlepage}

% \include{networks.tex}
%\include{waveguides.tex}
\include{timediscrete/timediscrete.tex}
%\include{standardfilters.tex}
%\include{matrixmethods.tex}
\appendix
\include{appendix/fourier.tex}

\end{document}
%%% Local Variables:
%%% mode: latex
%%% TeX-master: t
%%% End:
