Signal Processing EEG ECG

1 次查看（过去 30 天）
Efren Lema
Efren Lema 2016-2-4
回答： Daniel M 2019-11-9
Greetings, I have a signal as shown in the graph and want to remove the part B of the signal and to unite in a new vector Part A and C.
I had problems with dimenciones vector A and C.
Any suggestions ...?
  1 个评论
Said BOUREZG
Said BOUREZG 2016-2-5
Do u want to remove the part B of the signal and to unite in a new vector Part A and C automatically or according to the image (data given on image).

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Daniel M
Daniel M 2019-11-9
One method would be to use a moving RMS calculation over a small time window. You should know what a reasonable rms value is (based on the characteristic amplitude and frequency of your signal). Use movmean:
movrms = sqrt(movmean(yourvector .^ 2, nWindowLength));
where nWindowLength is the number of elements to include in your window. When movrms crosses some threshold mark it for deletion until it goes back under that threshold. It would probably help to run it through a lowpass filter first.

类别

在 Help Center 和 File Exchange 中查找有关 EEG/MEG/ECoG 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