How to deal with this error??
A model of the surface EMG signal is created by filtering a white gaussian noise, using a shaping filter H(f). this filter has low cut-off freq=60hz and high cut-off freq=120hz. this is my code but i don't know how to deal with Undefined function 'designfilt' for input arguments of type 'char'. clear all; subplot(322); load nnoise.m; plot(nnoise,'k'); % design shaping filter bpFilt = designfilt('bandpassfir',... 'CutoffFrequency1',60,'CutoffFrequency2',120, ... 'SampleRate',2000); subplot(323); W = filter(bpFilt,nnoise); plot(W,'k');title ('EMG');
Neeta Dsouza answered .
2025-11-20
Fs = 2000; notch_frq = [50 60 120 130]; mags = [0 1 0]; devs = [0.05 0.01 0.05]; [n,Wn,beta,ftype] = kaiserord(notch_frq,mags,devs,Fs); n = n + rem(n,2); hh = fir1(n,Wn,ftype,kaiser(n+1,beta),'scale'); figure(1) freqz(hh, 1, 2^17, Fs)