From: Peter Charles (cyberbiota_at_hotmail.com)
Date: 2002-07-03 10:19:20
Moritz-
A company called Anadigm (www.anadigm.com) makes just such a device. For
true FFT analysis there are a variety of digital signal processors that
might also work (check out the Atmel FPslic devices- there is one available
with an FFT core already onboard). These are all pretty pricy right now
(the Anadigm chip runs ~ $30 US). But with time and volume, prices always
drop. It is a wonderful time to be a hardware hacker- so many nifty toys
out there to play with!
peter
>From: Moritz von Buttlar <info_at_baltic-microsolutions.de>
>Reply-To: buildcheapeeg_at_yahoogroups.com
>To: buildcheapeeg_at_yahoogroups.com
>Subject: Re: [buildcheapeeg] Palm App
>Date: Wed, 3 Jul 2002 10:03:36 +0200
> Hi everyone !
>
>Regarding Palm coupled EEG or standalone EEG, I have the following idea:
>there are now so called PSoC (programmable system on a chip)
>microcontrollers,
>e.g. from Cypress. They include analog modules with switched capacitor
>structures. These can be used for analog filters. Therefore, instead of
>digital filtering, these devices would allow analog filtering. But they
>would
>still be digitally reconfigurable and controllable. The signal processing
>for
>most biofeedback systems could therefore be solved by using such a chip.
>Disadvantage: only bandpass filters, no true FFT.
>
> Moritz
>
>--
>Baltic-Microsolutions uC/DSP/PSOC http://www.baltic-microsolutions.de
>Hardware&Softwaredesign --- MSP430 Bootloader Software
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This archive was generated by hypermail 2.1.4 : 2002-07-27 12:28:44 BST