# Create audio settings

## Aim

To optimize the recording volume.


## Prerequisites

- You have Axis IP cameras that are supported with MediaRecorder.  
    See [Supported IP cameras](https://bookstack.noldus.com/link/412#bkmrk-supported-ip-cameras) in [Recording devices](https://bookstack.noldus.com/link/410#bkmrk-page-title)
- You followed the procedure in [Ethernet card setup](https://bookstack.noldus.com/link/478#bkmrk-page-title)
- You connected all cameras.
- You gave the cameras an IP address.  
    See [Set camera IP address](https://bookstack.noldus.com/link/483#bkmrk-page-title)

- You gave the camera a password and selected the correct power line frequency.  
    See [Set camera password and select power line frequency](https://bookstack.noldus.com/link/484#bkmrk-page-title)

- You followed the procedure in [Create camera settings](https://bookstack.noldus.com/link/485#bkmrk-page-title)

## Procedure

1. Open the camera settings,  
    See [Access camera settings](https://bookstack.noldus.com/link/485#bkmrk-access-camera-settin-1)
2. Open the **<span class="FM_Bold">Audio</span>** tab.
3. Adjust the **Gain** slider and check in the **Input** section that the green field in the **Level** field is maximal with normal speech. [![image.png](https://bookstack.noldus.com/uploads/images/gallery/2023-12/scaled-1680-/7WC1DA0JEjjQSIpd-image.png)](https://bookstack.noldus.com/uploads/images/gallery/2023-12/7WC1DA0JEjjQSIpd-image.png)

## Note

You cannot record the audio of non-ONVIF devices in MediaRecorder. Optionally record audio from a separate microphone that is connected to the microphone input of the computer with MediaRecorder. The Axis cameras supported with MediaRecorder support ONVIF.