fir gui\d2fft.m .......\fir.m .......\getwindow.m .......\gui_fir.fig .......\gui_fir.m .......\gui_sigout.fig .......\gui_sigout.m .......\gui_top.fig .......\gui_top.m .......\idealfilter.m .......\idealhd.m .......\sigout.m .......\timeconv.m fir gui