OpenViBE forum

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Hi, I have produced the AdjustOpenVibe application. If you can clarify what happens when you try to debug then I can help you. But I have not tried AdjustOpenVibe on SSVEP demo indeed. One problem (that I do not remember exactly) is that we have problem with Ogre in our demo in VS2010 in my lab. Ogr...

Hi Jozef,

These are some new details for me. OK, in this situation I can not advocate this driver any more. It's a pity indeed.
I have a research license and I can not understand why Emtoiv did not release a Linux driver for so long.

Anton

Hi Laurent, I was afraid this will be your answer. I had a conversation with Yann a year ago on the same topic. But I have a proposal. See below: First we should promote Antoche's code as a "Linux driver" only. Second if it ever go into OpenVibe then it should compile only on Linux. Third thing is t...

Hi Antoche, Good job! You did it before me. I went quickly through the code and it looks good. The gyro channels will always be visible I suppose, but not a big deal - this can be adjusted later, "channel selector box" can be used. I would prefer a way to integrate your driver on any OpenVibe code i...

How do you create a setup installer from your compiled distribution?

I would like to create an installer and test OpenVibe in virtual machine.

Cheer,
Anton

Hi, Here at Gipsa lab we noticed that the "stream switch" does not output any signal until it receives one of the stimulations in its configuration. That means that the signal in the beginning is completely lost, because it is not being redirected. A good idea (a fix) is to add a new UI property dro...

And just for reference I have added the code inside the GTEC driver that generates the stimulations. The way the time is generated might be wrong? I mean the "setStimulationDate" part. if (TriggerInputEnabled) { int l_ui32NbStimulations = 0; int k= m_oHeader.getChannelCount();//+1 channel for(uint32...

Hi, I am implementing hardware trigger support for the GTEC usb amplifier. My problem is that if I send 500 stimulation with "SetStimulations" method of the AcquistionServer then I get a different output number like: 350. I mean the driver sends 500 and Acqusition server sends 350 to the Designer. N...

Ok,

I did:

uint64 time_ms = 4500;

float64 time_sec = (float64)time_ms / (float64)1000;

uint64 ov_time = (uint64)(time_sec * 1024)<<22;

Ant it seems to work, but I am not 100% sure it is OK.

I will appreciate some clarification.

Hi, I am doing something wrong above. When I convert my time to OpenVibe's time and then print it like that: logm << LogLevel_Info << "stimulation time stamp: " << time64(result) << "\n"; then I see that milliseconds are lost. That is, I encoded them, but OpenVibe does not find them. It prints "xxx....

Version 2.6 is available. Adastra now considers the sampling frequency and produces signal chunks (or epochs). These signal chunks are used by the "EigenValuesFeatureGenerator" to calculate covariance matrix for each one. Then the eigen values of each covariance matrix are used as feature vectors. T...

I had much bigger idea indeed about the designer. If the GUI could be decoupled then the designer can be compiled in VC++ in managed mode. Then managed C# wrappers will be written for the main classes and then OpenVibe will have a managed API. For example my Adastra application will be able to execu...

Time in OpenVibe is represented in 32:32 64bit number, right. This is like BCD numbers I believe. Not sure I got it right. Suppose I want to convert variable N which contains time in ms to OpenVibe's times format. I need to: int N = 4500 ms uint64 k = N / 1000; //k are integer seconds that needs to ...

Thank you for your patience indeed

I am kind of disappointed because of the hard-coded GTK dependency.

So one can send commands to the PlayerBox through the keyboard simulator or even using VRPN button client which connects to an external application.