Finding high and low frequency noise....

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Tinkul
Tinkul 2014-5-3
回答： Star Strider 2014-5-3
Is power line interference high frequency noise in ecg and base line wandering low frequency noise in ecg? Is both the noise present in EMG and EEG signal?

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Star Strider
Star Strider 2014-5-3
Powerline noise can appear in poorly-instrumented EMG and EEG signals. The usual way to deal with this in hardware is to have a good subject reference ground, no ground faults (patient ground and instrument ground are the same), and to use shielded cables.
You can get rid of the 50-60 Hz noise in the recorded signal using a digital notch filter. Baseline wandering is usually dealt with by using an appropriately-designed bandpass filter.

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