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    % Signal Processing Toolbox GUI
%
% Graphical User Interface
%   sptool   - A graphical environment for analyzing and manipulating digital
%              signals, filters, and spectra.  It is the starting point for 
%              using the interactive signal processing environment:
%
%              * Signal Browser  - signal exploration environment
%              * Filter Designer - FIR and IIR digital filter design
%                                  Includes a graphical Pole/Zero Editor
%              * Filter Viewer   - filter characteristics analysis
%              * Spectrum Viewer - power spectral density estimation 
%
% MAT files
%   startup - Default session file which is loaded upon starting SPTool.
%
% See also SIGNAL, SIGDEMOS.

%   Copyright (c) 1988-98 by The MathWorks, Inc.
%       $Revision: 1.4 $