> For the complete documentation index, see [llms.txt](https://docs.timeinpixels.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.timeinpixels.com/nobe-omniscope/scopes/audio-meter.md).

# Audio Meter

![Audio Meter](https://565437294-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MFqn5MuayPgQPMZ9pwf%2F-MG0cZfnsDG98WCPA0oH%2F-MG0d0fUBohlksY5_g-m%2FScreenshot%202020-08-31%20at%2001.11.11.jpg?alt=media\&token=916d4e75-8370-42b4-b145-a6b24097f0f4)

Audio meter features:

* Up to 32 audio channels
* Peak Hold option
* Configurable colors
* LUFS scale support (1.11.8+)

![](https://565437294-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MFqn5MuayPgQPMZ9pwf%2F-MGPv1Z1tHpeTdIEJfdo%2F-MGPv5r1aACEgT3nWFHN%2F04_audio.gif?alt=media\&token=c405a108-e819-4515-8e76-7b7f76e40096)

{% hint style="info" %}
Audio is supported through SDI/NDI, video files, and supported USB devices (1.11.25+). LUFS loudness metering is available on live inputs (SDI/NDI) as well as file sources.
{% endhint %}

### Monitoring Audio Channels

When a source has **Monitor audio** enabled, OmniScope can route only selected source channels to the monitor output for speaker or headphone checking.

* Use the numbered channel buttons in the source's **Source & monitoring** section to select which embedded channels you want to hear.
* When **Monitor audio** is enabled, each channel strip in the **Audio Meter** also gets an **S** solo button so you can audition that channel directly from the scope.
* The **Audio Meter** keeps showing all available channels even when monitored playback is limited to a subset.
* If no channels are selected, OmniScope plays the full mix, matching the previous default behavior.
* Use **Clear** to remove the current selection and return to full-mix monitoring.

### Scale Types

The Audio Meter Scope supports the following standards:

1. **dB** (Generic)
2. **dBFS** (Digital Full Scale)
3. **dBU** (Analog reference)
4. **LUFS** (Broadcast loudness compliance)
5. **VU** (Analog-style volume units)