how to analyze frequency response ?

4 次查看（过去 30 天）
Gokul
Gokul 2013-3-6
how to analyze frequency response of a audio file using freqz command ? can any one help ,i am a beginner to matlab

请先登录，再回答此问题。

采纳的回答

Wayne King
Wayne King 2013-3-6
I don't think you want to use freqz() for that. You want to use either spectrogram() or periodogram(), or pwelch()
Which one of the above is the most appropriate depends on your goals. If you want to see how the energy distribution by frequency varies in the audio over time, then you will need to use spectrogram()

更多回答（1 个）

Carlos
Carlos 2013-3-6
Hi Gokul, freqz is used to find the frecuency response, once you have designed your b and a vectors.
[h,w]=freqz(b,a,n)
returns the filter's frecuency response. As far as I know freqz is used when you want to represent your filter's frecuency response, by doing
plot(w/(2*pi),abs(H)).
To find the frecuency response use fft.

类别

在 Help Center 和 File Exchange 中查找有关 Multirate Signal Processing 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by