How do ı convert rad/sample to Hz?

Question

studentmatlaber 2021-5-26

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/840815-how-do-i-convert-rad-sample-to-hz

评论： Star Strider 2021-5-27

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 个评论
显示无隐藏无

studentmatlaber 2021-5-27

thank you so much

Star Strider 2021-5-27

As always, my pleasure!

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Star Strider 2021-5-26

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/840815-how-do-i-convert-rad-sample-to-hz#answer_710025

在 MATLAB Online 中打开

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)

.