Filters - time domain

1 次查看（过去 30 天）
Bran
Bran 2016-7-11
评论： Star Strider 2016-7-11
I would like to use a filter to re-position parts of a signal so that they oscillate around zero. My signal has a mixture of parts that are correct and those that are off by a certain amount. Can you suggest the best filter to do this as I would like to keep my signal in the time - domain

请先登录，再回答此问题。

采纳的回答

Star Strider
Star Strider 2016-7-11
If I understand you Question correctly, a high-pass filter that filters out the lowest frequencies (including the d-c offset) will work. If you have high-frequency noise, a bandpass filter would be best.
There are several ways to design filters in MATLAB, including dfilt and designfilt. My filter design procedure is here: How to design a lowpass filter for ocean wave data in Matlab?
  2 个评论
Bran
Bran 2016-7-11
Thank you very much for your response. Will this work considering the DC offset is only there for very small parts of the signal?
Star Strider
Star Strider 2016-7-11
My pleasure.
A d-c offset will be present for the entire length of the signal. If you have a varying baseline, you will need to use a bandpass filter to pass only your frequencies of interest, eliminating the low-frequency baseline variation.

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Digital Filter Analysis 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