On Tuesday 20 February 2007 13:23, vkelim wrote: > n the general practice context, our ECG machines already need filters to > block out the 50/60 Hz hum. Will these ethernet over power devices mean > that we can now share our MP3s by passing around ECG reports?
I doubt that even the highest resolution digitized ECG would show any visible hum in the GHz spectrum ;-) 50 Hz hum is only annoying because it is visible to the human eye, and you cannot really filter it out with a band pass filter because you still want the 50 Hz range signal portion within the ECG when analyzing eg Q waves Signals above a few KHz are easy to filter out and will not disturb the morphology of your ECG signal Horst _______________________________________________ Gpcg_talk mailing list [email protected] http://ozdocit.org/cgi-bin/mailman/listinfo/gpcg_talk
