tfrqview.tex

时频分析的工具包

% This is part of the TFTB Reference Manual.
% Copyright (C) 1996 CNRS (France) and Rice University (US).
% See the file refguide.tex for copying conditions.


\markright{tfrqview}
\hspace*{-1.6cm}{\Large \bf tfrqview}

\vspace*{-.4cm}
\hspace*{-1.6cm}\rule[0in]{16.5cm}{.02cm}
\vspace*{.2cm}

{\bf \large \fontfamily{cmss}\selectfont Purpose}\\
\hspace*{1.5cm}
\begin{minipage}[t]{13.5cm}
Quick visualization of a time-frequency representation.
\end{minipage}
\vspace*{.5cm}

{\bf \large \fontfamily{cmss}\selectfont Synopsis}\\
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\begin{minipage}[t]{13.5cm}
\begin{verbatim}
tfrqview(tfr)
tfrqview(tfr,sig)
tfrqview(tfr,sig,t)
tfrqview(tfr,sig,t,method)
tfrqview(tfr,sig,t,method,p1)
tfrqview(tfr,sig,t,method,p1,p2)
tfrqview(tfr,sig,t,method,p1,p2,p3)
tfrqview(tfr,sig,t,method,p1,p2,p3,p4)
tfrqview(tfr,sig,t,method,p1,p2,p3,p4,p5)
\end{verbatim}
\end{minipage}
\vspace*{.5cm}

{\bf \large \fontfamily{cmss}\selectfont Description}\\
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\begin{minipage}[t]{13.5cm}
        {\ty tfrqview} allows a quick visualization of a time-frequency
        representation. {\ty tfrqview} is called by any time-frequency
        representation of the toolbox ({\ty tfr*} functions) when these
        functions are called without any output argument.\\
 
\hspace*{-.5cm}\begin{tabular*}{14cm}{p{1.5cm} p{8.5cm} c}
Name & Description & Default value\\
\hline
        {\ty tfr}     & time-frequency representation {\ty (MxN)}\\
        {\ty sig}     & signal in time. If unavailable, put {\ty sig=[]} as input
                  parameter                    & {\ty []}\\
        {\ty t}       & time instants                 & {\ty (1:N)}\\
        {\ty method}  & name of chosen representation (see the {\ty tfr*}
		files for authorized names) & {\ty 'type1'} \\
                  &  {\ty type1} : the representation {\ty tfr} goes in normalized
                        frequency from {\ty -0.5} to {\ty 0.5} \\ 
                  &  {\ty type2} : the representation {\ty tfr} goes in normalized
                        frequency from {\ty 0} to {\ty 0.5}\\
        {\ty p1..p5} & optional parameters of the representation : run the 
                  file {\ty tfrparam(method)} to know the meaning of {\ty p1..p5} 
                  for your method\\
\hline
\end{tabular*}
\end{minipage}

\newpage

\hspace*{1.5cm}
\begin{minipage}[t]{13.5cm}
        When you use the {\ty 'save'} option in the main menu, you save all
        your variables as well as two strings, {\ty TfrQView} and {\ty
        TfrView}, in a mat file. If you load this file and do {\ty
        eval(TfrQView)}, you will restart the display session under {\ty
        tfrqview} ; if you do {\ty eval(TfrView)}, you will obtain the
        exact layout of the screen you had when clicking on the {\ty
        'save'} button.
\end{minipage}
\vspace*{.5cm}


{\bf \large \fontfamily{cmss}\selectfont Example}
\begin{verbatim}
         sig=fmsin(128); 
         tfr=tfrwv(sig);
         tfrqview(tfr,sig,1:128,'tfrwv');
\end{verbatim}
\vspace*{.5cm}


{\bf \large \fontfamily{cmss}\selectfont See Also}\\
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\begin{minipage}[t]{13.5cm}
\begin{verbatim}
tfrview, tfrsave, tfrparam.
\end{verbatim}
\end{minipage}