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Author Topic: EEG-SMT Signal merger  (Read 2067 times)

soha89

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EEG-SMT Signal merger
« on: January 15, 2014, 12:32:13 AM »
Hello everyone! I have some questions about the EEG signal. I have done the signal spliting from the device in Matlab/Simulink, and now I don't know how to merge the signals from low and high channels. 1. What have to I do to connect them and how I have to change the binary signal to normal wave? 2. This is a stupid question, but how many bits should I set to Input Buffer. 65536, or 512? I think that first number is too big. I'll be glad for any advices.

Here is the picture of my signals.

https://imageshack.com/i/mj1ohtp

First of them is an original not separated signal. Second is detecting the sync data, what means the new package was sent. The others is: channel 1(with connected electrodes)-high, channel 1-low, channel 2(without electrodes)-high, channel 2-low. As you can see, the signals from the electrodes was shifted in a way that they are all showed at the same time.
« Last Edit: January 15, 2014, 01:19:56 PM by soha89 »

LubOlimex

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Re: EEG-SMT Signal merger
« Reply #1 on: January 27, 2014, 10:40:09 AM »
Hey there,

The EEG module and the demo are just an implementation of the OpenEEG design. The example itself is based on firmware 2 of the specified by OpenEEG community here: http://openeeg.sourceforge.net/doc/modeeg/firmware/modeeg-p2.c.

For software related question I recommend you to refer mainly to the documentation on the official OpenEEG web-site: http://openeeg.sourceforge.net/doc/.

Best regards,
Lub/OLIMEX
Technical support and documentation manager at Olimex