OpenViBE forum

Hi Shelldream, having that kind of scriptable scenarios is on our wishlist. Meanwhile, you can try to hack it as follows, 1) Locate an example of a scenario where playback stops by itself, e.g. test/SinusOscillator.xml (in the SVN) uses a box called Player Controller to stop playback after a while. ...

Hello everyone,

just as a reminder -- there's two OpenViBE related job positions open. Both are located in France.

PHD student on neurofeedback: Link (Deadline 30.Jun.2013)

Junior engineer: Link (Deadline 27.Sep.2013)


Cheers,
Jussi

Hi Joseph,

can you send UDP packets successfully from a stand-alone python interpreter from the virtual machine shell to the same port, having identical conditions? If not, the problem is likely outside OpenViBE. If yes, we'll need to examine how OpenViBE affects this.


Cheers,
Jussi

Hello Mariusz, unfortunately the parameter names of the temporal filter can not change depending on which filter type you select. However, the parameter meaning can change. Please see the documentation here: http://openvibe.inria.fr/documentation/unstable/Doc_BoxAlgorithm_TemporalFilterGPL.html To t...

Hi, Usually you need some libraries that come with the manufacturer to be installed on your computer. If OpenVibe build system does not detect these then it simply skips this driver - the build does not stop. Might be a good idea from us to add a kind of neat summary after the cmake stage of what c...

Hi Sumitsoman, tie-fighter-freetime.xml scenario appears to be constructed to read data from a file. To use it online, I suppose you'd need to modify the scenario to read data from the acquisition server ('Acquisition Client' box) and make the data from it match what the scenario expects (i.e. simil...

Have you tried changing the CSV writer box input to 'streamed matrix'? Right click on box, modify inputs.


Cheers,
Jussi

Just guessing here, but would you be able to process the sample with the Signal Decimation box? I haven't tested it, but by description it looks like it does downsampling.


Cheers,
Jussi

Hi Mod123, I don't have serial ports on my machine so its a bit difficult to test, but one thing that comes to mind is that your code tries to open the port in the process() function and doesn't seem to be closing it. The process() function is run repeatedly all the time to process data chunks as th...

That should work. If not, we should definitely fix it. Another option is to use the Python scripting box. As the processor output is a stimulation stream, Lua Stimulator box might also work. However, Matlab and Python boxes are more versatile in their inputs and outputs.


Good luck,
Jussi

Hi Hatma, this is a tricky question. The topic comes up every now and then. The general answer is here, http://openvibe.inria.fr/faq/#Which+EEG+device+should+I+buy? though there might be specific requirements for drowsiness research. Perhaps you could look at some papers written on the subject and s...

Hi MOD123, the solution suggested in this post might work for you as well:

viewtopic.php?f=10&t=4888&p=8426&hilit=vrpn#p8426

Happy hacking,
Jussi

Hello Hatma, you can use MindWave with the current SVN(!) version of OpenViBE. There is no OpenViBE release yet supporting it. A suitable example scenario is "box-tutorials/network-acquisition.xml". There is no existing neurosky datasets included with OpenViBE, but you can modify the network acquisi...

Hi nsprt, I'm not sure if there's a direct solution, but you can try connecting the .ov reading box to the matlab scripting box in Designer, and then write a corresponding .m script (process) to collect the received data to a matrix. You can then save the matrix as .mat if you wish to do something w...

Hi Peter,

only the SVN version of OpenViBE works with MindWave Mobile. Supporting it is a very new development. There is no release version yet that'd work with it.


Best,
Jussi