High Pass Filters

[anwaypimpalkar]

Hi, I am trying to implement a bandpass filter, equivalent to a Python script of:

data = np.array(readings).astype(np.int64)
b, a = ssig.butter(4, [20, 200], btype="bandpass", fs=fs)
filtered_data = ssig.filtfilt(b, a, data.flatten())

Currently, I'm looking into the Butterworth filter included in this library, but can't find a way to implement any kind of high-pass to daisy-chain it, maybe. Could someone help me understand my options? Thanks.

[matlen]

Hi, I think this is a duplicate to another issue, where I just posted this comment. https://github.com/tttapa/Arduino-Filters/issues/7#issuecomment-2458253732