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Cannot understand the filter function #8

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twhiting87 opened this issue Feb 2, 2018 · 0 comments
Open

Cannot understand the filter function #8

twhiting87 opened this issue Feb 2, 2018 · 0 comments

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@twhiting87
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twhiting87 commented Feb 2, 2018 •
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Hi, could someone explain to me what is happening in the filter function 'ECG_ProcessCurrSample' in the Arduino sketch? I realise it says in the comments it's a first order 40Hz IIR low pass, however I'm struggling to understand how it implements this in the code and also how is the DC component removed when it is a low pass filter?
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