Fig. 1
a Frequency response of simulated (blue) and measured (red) gains for fL = 100 Hz and fH = 1 kHz. Vertical lines represent the desired overall filter bandwidth of 300 Hz − 1 kHz. The horizontal line marks − 3 dB gain. b Frequency response of simulated phase angle. Dashed curves represent frequency responses with the digital high-pass filter (offset removal filter) disabled, and solid curves represent the digital filter–enabled fD = 318 Hz. digital: dig