Definition: A high pass filter (HPF) allows the signal portion corresponding to high-frequency values alone to pass through it.Definition: A high pass filter (HPF) allows the signal portion corresponding to high-frequency values alone to pass through it.
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References: https://www.sciencedirect.com/topics/engineering/high-pass-filter
Related terms: low-pass filter, filtering, preprocessing, low frequency oscillations, noise, bandpass filter