> 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/flanger.md).

# Flanger

![Flanger](/files/-LuiTCA0Z4NXrPasg71-)

A [Comb Filter](https://en.wikipedia.org/wiki/Comb_filter) modulated with a LFO.

## Knobs

* **DELAY:** adjusts comb filter [delay](https://en.wikipedia.org/wiki/Delay_\(audio_effect\)). 
* **AMOUNT:** adjusts LFO amplitude. 
* **RATE:** adjusts LFO frequency. 
* **FEEDBACK;** adjusts comb filter [feedback](https://en.wikipedia.org/wiki/Feedback).
* **NOISE:** adjusts amount of white noise mixed into input signal.

{% hint style="info" %}
The LFO modulates comb filter delay, this LFO takes the form of a [sine wave](https://en.wikipedia.org/wiki/Sine_wave#/media/File:Waveforms.svg).
{% endhint %}

## Buttons

* **Invert:** currently does nothing (safe to ignore).


---

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