wt04fig05.m

斯坦福大学的小波的工具箱 比matlab自带的工具箱更完善

%CAPTION
fprintf('\n');
disp('Figure 4.5')
disp('Graphs of four windows g(t) whose supports are [-.5,.5].');

close all;
N = 64;
t = -.5 + (0:N)/N;

subplot(221)
	hamming = .54 + .46*cos(2*pi*t);
	plot(t,hamming);
	hold on
 	plot(t,zeros(1,N+1));
	axis([-.5 .5 -.1 1.1])
	title('Hamming')
subplot(222)
	gaussian = exp(-18*t.^2);
	plot(t,gaussian);
	hold on
 	plot(t,zeros(1,N+1));
	axis([-.5 .5 -.1 1.1]);
	title('Gaussian')
subplot(223)
	hanning = (cos(pi*t)).^2;
	plot(t,hanning);
	hold on
 	plot(t,zeros(1,N+1));
	axis([-.5 .5 -.1 1.1]);
	title('Hanning')
subplot(224)
	blackman = .42+.5*cos(2*pi*t)+.08*cos(4*pi*t);
	plot(t,blackman);
	hold on
 	plot(t,zeros(1,N+1));
	axis([-.5 .5 -.1 1.1]);
	title('Blackman');
	
% Written by Maureen Clerc and Jerome Kalifa, 1997
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