How to convert normalized frequency to logarithmic frequency in magnitude frequency response

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632541
632541 2021 年 9 月 23 日
編集済み: 632541 2021 年 9 月 23 日
Hi,
How to convert normalized frequency to logarithmic frequency.
I have magnitude response of filter,
x axis in normalized freq. 0 to 1(Sampling frequency).
I want to get the x axis in logarithmic frequencies.
How to do this in matlab?
Please any solutions for this
  2 件のコメント
Mathieu NOE
Mathieu NOE 2021 年 9 月 23 日
hello
you can easily create your x axis (frequency) vector by using logspace :
assuming you want N values :
% start_freq is the min normalized frequency
% stop_freq is the max normalized frequency
% Fs is the sampling frequency
freq = logspace(log10(start_freq*Fs/2),log10(stop_freq*Fs/2),N);
632541
632541 2021 年 9 月 23 日
編集済み: 632541 2021 年 9 月 23 日
Thank you..
I'm using freqz(b,a) for IIR filter

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