testfrft.m

这是学习分数阶傅里叶变换

x=-pi:0.02:pi;
y =cos(x);
clear p_saved hn_saved E_saved
for a=0:0.05:2
    fy=Disfrft(y,a);
    fys=cdpei(y,a);
    fyss=frft(y,a);
    fysa=fft(y);
    % blue,green,red,cyan
    figure(2)
    subplot(511);plot(x,real([fy]));
    title(['a = ',num2str(a)]);
    subplot(512);plot(x,real([fys]));
    subplot(513);plot(x,real([fyss]));
    subplot(514);plot(x,imag([fysa]));
    subplot(515);plot(x,abs([y]));
    pause(0.7);
end