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Signal Processing

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    $\begingroup$ the only difference between the two filters of your example, is the BPF is also blocking DC. there might be some drift or really slow "wow" (drifting up and down) that the LPF allows but the BPF blocks. otherwise they both do the same thing above 30 Hz. $\endgroup$ Commented Mar 25, 2017 at 4:30
  • $\begingroup$ What does it mean to block DC? $\endgroup$ Commented Mar 25, 2017 at 12:06
  • $\begingroup$ DC is "Direct Current" and has a frequency of 0 and blocking DC means that the filter has gain of 0 (or $-\infty$ dB) at that frequency of 0. $\endgroup$ Commented Mar 25, 2017 at 13:31