DYNAMICALLY VARIABLE FILTER

摘要

A method of processing a signal pertaining to at least one electrical property of an organ of a subject is disclosed. The method comprises determining a physiological condition of the subject, selecting a frequency band, filtering the signal according to the frequency band, and dynamically adapting the frequency band in response to a change in the physiological condition.

主权项

1. Apparatus for monitoring an electrical property of an organ of a subject, comprising:
an input for receiving input radiofrequency signals sensed from the organ and output radiofrequency signals transmitted to the organ; a signal processor for processing said input radiofrequency signals based on said output radiofrequency signals, to provide processed input signals; a filtering unit configured for filtering said processed signals to provide filtered signals, said filtering unit comprising a dynamically variable band pass filter having a lower frequency bound and an upper frequency bound, wherein at least one of said frequency bounds is adapted in response to a change in a heart rate of the subject and wherein at least one of said frequency bounds comprises a linear function of said heart rate; and a monitoring unit for monitoring the electrical property of the organ based on said filtered signals.