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Plotting Frequency Response

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andrew257

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plotting frequency ads

Hi All

I wish to plot various frequency responses it matlab all on the same plot.

I can plot them individually but not together, can anyone reccomend how to do this.

This is my code:

b=fir1(n,wn,rectwin(n+1),'noscale');
[h,w]=freqz(b,a,512);
plot(w/pi,(abs(h);

i wish to plot the same responses but only for different windows. e.g compare rectangular,triangular and hamming windows using the same cuttoff frequency and order.

cheers

Andrew
 


hi
just write 'hold on' after the first plot
or use
' plot(x1,y1,x2,y2....)'
 

hi, thanks for the fast reply,

would this work

b=fir1(n,wn,rectwin(n+1),'noscale');
[h,w]=freqz(b,a,512);
plot(w/pi,(abs(h);
'hold on'
b=fir1(n,wn,triang(n+1),'noscale');
[h,w]=freqz(b,a,512);
plot(w/pi,(abs(h);
'hold on'
b=fir1(n,wn,hamming(n+1),'noscale');
[h,w]=freqz(b,a,512);
plot(w/pi,(abs(h);

cheers

Andy
 

Medra is right.. you can use plot(x1,y1,x2,y2....) .. for plotting on the same figure..
 


hi
hold on
without coloms ( ')
 

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