> For the complete documentation index, see [llms.txt](https://docs.datarhei.com/restreamer/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.datarhei.com/restreamer/knowledge-base/user-guides/how-to-use-the-audio-filters.md).

# How to use the audio filters?

![](https://lh4.googleusercontent.com/CEdUhFr7ESozbRkoloZ14RQytpxJ-Q3l5ukber9stdz34p0OUt3pbaDBcFUwVrZnciimqVNbmr_cNg3ntkmzDZNZlriD52l0DjlXI93HSDJy-oikJnmn85WOoclQFssslj0ER9ZSn21xoFd0J1rYCA)

### Sampling 

You can manipulate the sampling rate of the input signal (which already existed before directly in the encoder)

### Layout 

Sets the audio layout (mono, stereo, unprocessed)

### Pan 

Can mute the left or right channel

### Volume

 Lets you set the level (10-90% or custom with dB value)

### Volume normalization

 FFmpeg tries to bring the noise level to an average level.