How do ı convert rad/sample to Hz?
100 views (last 30 days)
Show older comments
studentmatlaber
on 26 May 2021
Commented: Star Strider
on 27 May 2021
Hello to everyone. I passed the signal through the Parks-McClellan optimal FIR filter. With the fvtool command, I get the magnitude response in rad / sample. but what I want is a filter response graph in Hertz. Is there a command that can directly plot the graph in Hertz? Or how do I convert rad / sample to Herzt.
[n, fo, ao, w] = firpmord ([0.04 1], [1 0], [0.001 0.01], Fs);
b = firpm (n, fo, ao, w);
fvtool(b,1);
2 Comments
Accepted Answer
Star Strider
on 26 May 2021
Note that π radians/sample is equivalent to the Nyquist frequency, one-half of the sampling frequency.
In fvtool, click on the x-axis label to change it from rad/sample to Hz automatically. Another option is to use the freqz function instead, and specify ‘Fs’ as the last argument:
Fs = 10; % Define ®Fs'
[n, fo, ao, w] = firpmord ([0.04 1], [1 0], [0.001 0.01], Fs);
b = firpm (n, fo, ao, w);
figure
freqz(b, 1, 2^16, Fs)
.
0 Comments
More Answers (0)
See Also
Categories
Find more on Filter Design in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!