OpenViBE forum

Hi Anton, We are using NSIS to compile our installers on windows. You would have to download NSIS, and maybe modify the fils scripts/openvibe-x.x.x-svnXXX.nsis . For example, this script need to package all the dependencies. Be careful if you have some new ones. If you have NSIS on your computer, ju...

Hi Anton, The default behaviour is indeed not to send anything until one output has been activated by a stimulation. Adding a setting for a default output is possible. I would prefer activating by default the first output, it's simpler and does not require an update of the boxes in existing scenario...

Hi, As specified in the documentation page, the CSV Reader box is marked as unstable. It means the original developer thinks the box has some unexpected behavior or bugs, and its structure may change in future. You can still use this box, by allowing unstable boxes in the openvibe designer. Modify y...

Hi cbr0wn, I am trying to grasp the concept of how OpenVibe reduces noise from EPOC headset. The EPOC already does some noise reduction filtering inside the headset. The signal you get in openvibe is already filtered a bit. Maybe there is more information in the EPOC documentation. How does OpenVibe...

Hi Lorena and welcome on board ! Openvibe can read various data files (GDF, EDF, BCI2000 dat, CSV, etc.). When you download openvibe, you have several examples available in share/openvibe-scenarios. Check the documentation page for more details about the given scenarios. We also provide some data fi...

Hi Jean-François, Sorry for the late reply ! If you didn't already solve your problem, here is some tips. The Visual Studio 2008 vs90 compatibility has been hidden lately, as microsoft does not provide this version of VS anymore. We didn't remove the archives from the website so you will be able to ...

Hi, Yes you should download the source code version to have the development libraries for VRPN. With the windows installer version, only the runtime are given (to have a lighter installer). The dependencies installer in the source package install every dev libs of the dependencies. You will have to ...

Hi Orna,

I'm sorry I'm not familiar with sLoreta at all...

Anyone else around?

Laurent-

Hi Wang Yubo, welcome on board! 1, If I want to implement an algorithm in OpenVibe, is it possible to use external libraries such as some signal processing or mathematic related source files? Are there some rules I should follow? Several OpenViBE boxes already use some external dependencies to perfo...

Hi cbr0wn, Box settings can be defined by loading a file. This file will be read and the settings set accordingly when pressing "play" in a scenario. This documentation page explains how to write such file. In the case of the classifier processor, this file contains the classifier coefficients, comp...

Hi karthiks,

Producing 10 values at 100Hz frequency seems ok to me !

I believe VRPN as some internal cyclic buffer so as long as you consume the data fast enough you won't have any problem.


L-

hi wuwu622, The VRPN folder should definitely contain some file (lib, bin and include folders). The easiest way to get it back is to re-install the dependencies by executing win32-instal_dependencies.exe in scripts once again (reinstall all dependencies and not only VRPN). For your information, this...

From Kevin : Dear Ibonnet, I have searched the forum, but I couldn't find the direct answer of this question: Would you please tell me, how can I change the font and field size of "target" and "result" field in p300 Speller Visualization window? Thank you for your consideration. Kind Regards, Kevin ...

Hi flood and welcome on board, I've figured that the best thing for me to do would be to try and write my own box for OpenVibe to send messages directly via OSC. I'm reading up on the OV documentation as well as the OSC protocol. I'd like to point out that my programming skills are, at best, rudimen...

Hi Luisa, If the drift correction is triggered too much, it can be a problem indeed. If such high drift is detected, you should have in the console a warning message telling you how much the drift was corrected. Is it the case ? Maybe the g.Mobilab+ has a jitter that need more time to adjust itself....