Category Archives: DC Blocker

A one-pole filter

Here’s a very simple workhorse of DSP applications—the one-pole filter. By comparison, biquads implement two zeros and two poles. You can see that our one-pole simply discards the zeros (the feed-forward delay paths) and the second pole (feedback path): We … Continue reading

Posted in DC Blocker, Digital Audio, IIR Filters, Source Code | 40 Comments