Parks-McClellan FIR filter (firgr)

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maro
maro 2012-4-26
I'm doing a project to eliminate 60Hz of power supply from ECG signal and I want to implement by using equiripplr notch filter (Parks-McClellan). I found the (firgr) function and I tried to implement notch filter using it with fs=175Hz but I can't. Can someone help me. this my code: %%
f=0.01:0.05:1; % frequency range
a7=ones(1,20);
a7(1,14)=0; % all a7 ones except at 60Hz normalized at 0.658*pi
d={'n' 'n' 'n' 'n' 'n' 'n' 'n' 'n' 'n' 'n' 'n' 'n' 'n' 'n' 'n' 'n' 'n' 'n' 'n' 'n'};
b7 = firgr(20,f,...
a7,d);
fvtool(b7);
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Daniel Shub
Daniel Shub 2012-4-26
http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer
http://www.mathworks.com/matlabcentral/answers/8626-how-do-i-get-help-on-homework-questions-on-matlab-answers

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