From: Fil Laborde (fil_at_rezox.com)
Date: 2002-01-25 02:03:08
John & Andreas:
That's an interesting idea!
A MODULARIZED design so that the EEG amplication circuit could be plugged
into a soundcard (cheaper/quicker version), *OR* it could be plugged into
the remaining CCTs for the 'advanced' version with additional hardware
performance.
I would also suggest that there could be a large number of channels
available on the soundcard version, because all EEG input channels could be
frequency shifted to different ranges within the soundcard's range (thus 8
channels or 16 channels with 1 soundcard is still feasible).
Perhaps the software guys could consider making the actual hardware decoding
circuitry a separate module from the rest, so we could alternatively use a
soundcard processing module?
My only concerns is that there may be interference from the harmonics for
each of teh channels frequency shifted around, which may add to the
complexity. I will look into this, ask around, and get back to you guys.
Fil
>From: "John Morrison" <jmorrison_at_ahc.net.au>
>This sounds interesting and CHEAP and would make a good starter for anyone
interested in getting into EEGs. :-)
>Is it possible to design the input and isolation CCTs so they can used with
>either system?
>IF possible this means that a user could construct the input & isolation
>CCTs, connect it to the sound card and get a taste before going all out.
:-)
>And use the same CCTs when going to the FULL EEG experience. :-)
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