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csn-le / wave_clus

A fast and unsupervised algorithm for spike detection and sorting using wavelets and super-paramagnetic clustering
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Why use elliptic filter? #94

Closed perczelgy closed 6 years ago

perczelgy commented 6 years ago

Hi Fernando,

Is there a specific reason you're using elliptic filter instead of a Butterworth filter? Wouldn't it be better to use a filter (e.g. Butterworth, as you mention in the original article of wave_clus) that returns a smoother signal?

Thank you: György

ferchaure commented 6 years ago

When you have more noise in the stop band, a low order Butterworth filter doesn't help much. After a while using it the team found that an elliptic filter gave better clustering results. I did a few tests, and I checked that results for real data.