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BF548 Audio Loopback with EEG and ECG Data as input

Question asked by John1981 on Oct 3, 2011
Latest reply on May 24, 2012 by Prashant
Branched from an earlier discussion
Can Any one tell me wether this Audio loop back can be used in different way.
Can I input EEG and ECG data instead of Audio ( With proper Amplification and buffering).
Actually I'm trying to interface BF548 Ez-kit with EEG/ECG Front End Module(TI's ADS1198 ECGFE- PDK).
I want to Display the Frequency spectrums of 4 channels (2-EEG & 2 ECG) on BF548 Ez-kits LCD.
Can any one suggest a way to do that?