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some question about non-invasive fetal ecg database

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iyang

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fetal ecg database

Hello,everyone.

do somebody do some research on the sample records from non-invasive fetal electrocardiogram database?

I come cross a big question that i donnot know what the signal 'annotation' stand for?

these days, I adopt the algorithm of Fastica and wavelet transform(as preprocess),just want to obtain the fetal ecg from those sample records.
but it is very pity that i am failture. I am sure that the algorithm and the preprocess are both right, but I really donnot know why the result is that?

can somebody tell me why?
if possible, i will be deeply grateful .
 

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