OpenViBE forum

Thank you very much!!!
Ettore

Thank you!
They are the same scenarios (P300 speller and P300 speller Xdawn) with the same your datasets in input (training and online dataset, both with date 2016-04-20).
When you'll give a look, if I can help you, I can give to you other infomations about my tests to understand the problem.
Ettore

Sorry for the inconvenience! I know I asked many questions in the past, but now I have a very bad problem with the new version 3.0.0 (December 2020) ! I would work with the new version also because I would use the Artefact detection. The problem: the problem is the same working with P300 Speller or ...

Dear Fabien, thank you for your answer! 1) about the p300 accumulator, I am sure that if I indicate in the box Epoch Average the parameter Epoch Block Average with Epoch Count 2 or greater, the P300 accumulator doesn’t work. Because the number of epochs is less than the number of flashes and the Acc...

Scenario BCI-P300 speller. New version 3.3.0, but it is the same with the old one. I gave a look to the P300 Accumulator code to try to understand the reason of a problem(the problem was that the results, i.e. the characters selected, were not showed). I read this note in the code: “-- the idea is t...

Dear Thibaut,
after a lot of tests, I succeeded!!!
Thank you very much for the scenario that you built to get this other option to concatenate 2 files!
Ettore

Dear Thibaut,
I put on Filter Box the parametr that you can see in the attached image. The filter box is only for the first file.
Now, the train classifier worked only for the second part of the concatened file... .
Where am I wrong?
Thank you
Ettore

Sorry, dear Thibaut! Give a look to the next my answer!

Dear Thibaut, I would say to you: THANK YOU!!! Now, I didnt'understand what I have to do when you wrote "You must just remove the stimulation who run the train on all scenario except the last". And I tested the new little scenario, but I didn't remove anything. I only wrote, in your new scenario, th...

Before to ask my question, congratulation for the new versione 3.0.0!!! I have a question to try to train better the classifier. I think that the argument is known as “incremental learning". Now: -I am on Openvibe 2.2.0 -I run the scenario P300-speller-1-acquisition; the Generic-stream-writer writes...

Thank you very much Thibaut for your answer! Sorry for the delay of my new answer: I had the fever! You remember very well! I am tryng to work with the P300 Speller scenario. The question is: if (for i.e.): 1) in the box "P300 stimulator" (in the P300 Speller acquisition) I indicate a flash duration...

Sorry for my bad English! In this example: Flash duration: 0.1 No flash duration: 0.5 Epoch duration: 1.2 sec., I think that a target-epoch (i.e. with the start from the stimulation target), will get the EEGs for one target stimulation and also for one no-target stimolation. Is this a problem for th...

Dear Thibaut, sorry for my bad English! I read your suggestion for me " if you build OpenViBE from source, you can use the box artefact detection with 70 to 100 as parameter" and I installed another Opnevibe from source! The job was very hard...! But I installed the product. But now I dont'see the b...

Thank you very much, Thibaut!!!
I think that because my 6-7 questions are related to a lot of boxes and to a lot of terms about P300, it will be more clear to open a new post.
I need some time to try to write in clear English (Sigh!!!) my questions!!!!
Thank you very much!!!
Ettore

Thank you, Thibaut! Thank you very much! Two other questions: 1) I am an old programmer (very old...) IBM, Cobol, PL/I, etc... . I have no experience with the new programming languages . Now, I am working with P300-Speller from an Openvibe "Stable Windows Installer". If I try to install Opnevibe by ...