From: John Morrison (jmorrison_at_ahc.net.au)
Date: 2002-01-24 05:00:47
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. :-)
John Morrison
> -----Original Message-----
> From: sleeper75se [mailto:sleeper75se_at_yahoo.se]
> Sent: Thursday, 24 January 2002 12:31 PM
> To: buildcheapeeg_at_yahoogroups.com
> Subject: [buildcheapeeg] Re: Soundcard Interface
>
>
> --- In buildcheapeeg_at_yahoogroups.com, "Fil Laborde" <fil_at_rezox.com> wrote:
> > Guys!
> >
> > I've been asking around and here's the email I got from someone
> > who is part of an organization dealing with ELF Antennae.
> > Basically he is saying that there are many analog circuit junkies
> > who use soundcards to display signals in the ELF range (although
> > they are getting the signals from antennae, ie submarine
> > transmissions).
> >
> > So my question is, then, why not pursue an option of using the
> > quality electronics created here UPTO the bandpass section, and
> > then feed that into a soundcard and not bother with the complexity
> > of rebuilding the ADC, and parallel port communications parts. This
> > may give more flexibility to future possibilities?
>
> Hi Fil,
>
> Well, you are welcome to try. :-) I've designed, and Joerg Hansmann
> is designing, input stages, so that's already taken care of. However,
> you do need some kind of analog optical isolation between that and
> the PC for safety reasons.
>
> Pesonally, I only have time for the 8-channel device I'm working on,
> but I'd be happy to give you advice and feedback on such a design.
> You could probably ask any analog designer for help though, it is not
> a very complex problem.
>
> Best Regards,
>
> Andreas
>
>
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This archive was generated by hypermail 2.1.4 : 2002-07-27 12:28:37 BST