how to remove baseline wander from ECG?

i'm using the fdatool to create a digital filter to remove baseline wander which is to be applied to "filtered_dtrend" from sptool singals. anyone mind recomending the specific setup for the digital filter to remove blw?

[Image Analyst]

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Answer 1

[Star Strider]

I generally prefer to use the highpass or bandpass functions for these problems, although you are certainly free to design your own filters if you so desire. Choose the passband frequency cutoff to be about 1 Hz (this will be the lower passband frequency for a bandpass filter, with the higher passband being from 45 Hz to 100 Hz). Use the 'ImpulseResponse','iir' name-value pair for best results.