Filter_length warning

💬 Support & Discussions
1

Hi, When I used epoch.filter(1, 100), I’ve got this warning:

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image1732×398 20 KB

How do I change the filter length?

2

you cannot apply a reliable high pass with very short epochs

A

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3

Thanks! I just found that!

4

What you should do instead is filter the raw data.

Or if you need to filter on the epochs level, make the epochs longer, filter, and crop them to you desired duration.

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