OpenViBE forum

Hi!

First of all: This software is amazing. Thank you very much!

At the moment I am struggling to design a neurofeeback protocol that does not feed back a visual stimulus but a sound signal.
I would like to take the power of a band (alpha or theta) and feed it back as a tone or sound that changes volume.

Basically, that's the BCI example 'Neurofeedback' but not with a plot or a color but a sound.
So far I used the 'sign change detector' box and the 'sound player'. I now have a lower and a higher pitched sound depending on whether the power of a band is above or below a given threshold. However, I would like to have more than two sounds... and continuous change not a few steps...

I would appreciate any hint!

Thank you

Clemens

Hi Clemens,

as far as I know, that can be difficult to achieve with the current OpenViBE boxes without routing the signal to some external tool which then modulates the sound. You might be able to use several sound player boxes reacting to different triggers to get several frequencies, but not a continuous change.

We have received a contribution that allows interacting with OSC, but we haven't tested and integrated it yet. It might be there in the next version.


Best,
Jussi

Hi Jussi,

Thank you very much!

I will try the multiple sound boxes then.

However, if you want to send me the preliminary version of the OSC box, I could give you some feedback on how it runs in practice.

Best,
Clemens

Hi Clemens,

there is now OSC Controller box contributed by Ozan Caglayan in our git branch
'wip-jlindgre-merge-osc-controller'. This box can be used to send either signal,
matrix or stimulation data as messages to any device that acts as an
Open Sound Control (OSC) server.

Any feedback/impressions would be very welcome!


Happy hacking,
Jussi

Hi!

Great news!

However - excuse me if I am being silly - but I can not find the WIP boxes in the git.
"git clone git://scm.gforge.inria.fr/openvibe/openvibe.git" gets me the new openvibe source code but without work in progress boxes. What am I doing wrong? Am I using the wrong url?

Thanks,

Clemens

Default branch is master, try 'git checkout <branchname>'?


Happy hacking,
Jussi

That was fast, Thank you!

... But you lost me.


What do I have to do (for dummies) instead of using this 'git://scm.gforge.inria.fr/openvibe/openvibe.git' to clone the files into a directory?

Sorry,

Clemens