Hi,
At Gipsa-lab, some test demonstrate that the temporal filter of openViBE does not work properly everytime.
There are differences with Matlab filter which is a reference. Moreover, filter seems to be less stable.
How did you check this box? (only de/numerator value or output?)
temporal filter issue
Re: temporal filter issue
Dear matthieuG,
the author of the box (Guillaume Gibert) (should have) checked it, back when he created the box. Not sure how/if he actually did these tests. Unfortunately, he left the project.
Anyway, people at INSERM sent me an update this week. I will include it asap in the SVN repository so you can tell us if it is actually better. I expect it to be better
Yann
the author of the box (Guillaume Gibert) (should have) checked it, back when he created the box. Not sure how/if he actually did these tests. Unfortunately, he left the project.
Anyway, people at INSERM sent me an update this week. I will include it asap in the SVN repository so you can tell us if it is actually better. I expect it to be better
Yann
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Hi,
Even if a new version of this box should arrive, I needed to know where this filter is valid. After few investigation, It seems high and low filter (Butter only) is ok (err<1e-6). But band and stop are not! (on frequencies I used...). So while the new version is not here, I advise to use Butter as high and low only...
hope it helps
Even if a new version of this box should arrive, I needed to know where this filter is valid. After few investigation, It seems high and low filter (Butter only) is ok (err<1e-6). But band and stop are not! (on frequencies I used...). So while the new version is not here, I advise to use Butter as high and low only...
hope it helps
Re: temporal filter issue
Thank you matthieuG for this tip !
Yann
Yann