Remove chattering from signal

7 次查看（过去 30 天）
Teo Protoulis
Teo Protoulis 2019-10-28
回答： Sai Sri Pathuri 2019-11-1
I have the signal shown at the attached image. I want to remove the chattering which I think is high-frequency compared to the signal of interest. So, I think I should use some kind of low pass filter to filter out this chattering. In order to design an optimal filter should I firstly perform a Fourier transform to identify the frequency band of the signal and the frequency band of the noise ? And considering I perform the Fourier transform using Matlab’s fft(X), how do I recognize these frequency bands and then design the appropriate filter ?

请先登录，再回答此问题。

回答（1 个）

Sai Sri Pathuri
Sai Sri Pathuri 2019-11-1
Refer the following example (Noisy Signal) to find the frequency components of desired signal
https://www.mathworks.com/help/matlab/ref/fft.html#buuutyt-7
The frequencies in the fft spectrum at which the amplitude has peaks gives the frequency band of the signal

类别

在 Help Center 和 File Exchange 中查找有关 Digital Filter Analysis 的更多信息

标签

产品


版本

R2019b

Community Treasure Hunt

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

Start Hunting!

Translated by