% Catie Chang
% drawsigma.m - graph of gaussian env


% sigmasq = str2num(get(gcbo,''String''));
% set(sigmatextbox,''Value'',sigmasq);

% redraws the gaussian envelope when sigma is adjusted
% see playshepard.m

x = -10:.01:10;
G = exp((-1/2*sigmasq)*x.^2);
subplot(3,1,1);
plot(x,G);
title('Envelope');