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Timothy Ferris
10-22-1997, 08:44 AM
Karacan et al, IEEE Transaction on Biomedical Engineering, about 1971,
or possibly 1981, wrote on this issue concerning chart recorded EEG.
Their conclusion - good enough for FFT. I read this paper about 4 or 5
years ago.

> ----------
> From: Jeff Armitstead[SMTP:jeffa@gsbme.unsw.edu.au]
> Reply To: jeffa@gsbme.unsw.edu.au
> Sent: Wednesday, 22 October 1997 4:27
> To: BIOMCH-L@NIC.SURFNET.NL
> Subject: Old Chart Recordings
>
> Right out of left field......
>
> Has anyone ever had to digitise old hard-copy from a chart recorder ?
> A colleague would like to do just that, and is after any suggestions.
>
> Is the result of sufficient quality to do a FFT ?
>
> Thanks,
> Jeff.
>
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