> For the complete documentation index, see [llms.txt](https://docs.lmms.io/user-manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.lmms.io/user-manual/effects/dual-filter.md).

# Dual Filter

![Dual Filter](https://2675558978-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LRtsae7H2l0Wn3A4biK%2F-LuiSjmgNOBsiwzpilJw%2F-LuiSocDEVeW5IO8kyEI%2Fimage.png?alt=media\&token=a91a5338-52d7-42ab-aeab-c238e94fe1a9)

A plugin featuring 2 filters processed in parallel.

## Filter Parameters

* **FREQ:** adjusts cutoff/center frequency.
* **RESO:** adjusts resonance/bandwidth of the selected filter.
* **GAIN:** adjusts output gain of the selected filter.
* **Dropdown Menu:** allows for the selection of a filter from a list.

## Other

* **MIX:** adjusts final output bias to favor one filter over the other.

  With a value of:

  * **-1**, Filter 2 is muted and Filter 1 is the sole output.
  * **0**, Filter 2 and 1's outputs are mixed at 50/50.
  * **1**, Filter 1 is muted and Filter 2 is the sole output.