www.gusucode.com > dsp 案例源码程序 matlab代码 > dsp/DesignAnFIREquirippleFilterExample.m
%% Design an FIR Equiripple Filter % Design a minimum order interpolation filter with |l| set to 6, and |alpha| % set to 0.8. A vector of ripples must be supplied with % the input argument |minorder|. b = fireqint('minorder',6,.8,[0.01 .1 .05 .02]); %% % Create a polyphase interpolation filter. hm = dsp.FIRInterpolator(6,'Numerator',b) %% % Here is the zerophase response of the interpolator. zerophase(hm);