> For the complete documentation index, see [llms.txt](https://captivatehelp.newbluelive.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://captivatehelp.newbluelive.com/set-up-your-production/chapter-index-5/loudness-panel.md). # Loudness Panel The **Loudness Panel** measures your Program audio the way broadcasters and streaming platforms do — as loudness over time, not just peaks. Use it to deliver a mix at a consistent, standards-compliant level: the panel meters to EBU R128, whose broadcast target is **-23 LUFS**. Open it from the **View** menu: choose **Loudness Panel**. It’s a dockable panel; place it wherever you watch levels. (The panel appears on licenses that include loudness metering.) ## The readouts * **Momentary** — the loudness of the last 400 milliseconds. The "right now" number. * **Short-Term** — the last 3 seconds. What the mix has been doing lately. * **Integrated** — the gated average since the last **Reset**. **This is the delivery number** — the one a broadcaster or platform specifies, and the big cell in the panel. Aim for the -23 LUFS target. * **Range** — the Loudness Range (LRA): how widely the short-term loudness has varied since Reset, in LU. * **True Peak** — the highest inter-sample peak, in dBTP. Keep it below -1 dBTP to avoid clipping in downstream encoders. * **Time** — elapsed program time since metering started or was last Reset. A status readout summarizes where you are: **MEASURING** while the integrated number settles, then **ON TARGET**, **OVER**, or **UNDER** against the -23 LUFS target, and **TRUE PEAK** when peaks exceed the safe ceiling. ## Measure a program 1. Choose the bus to meter from the dropdown at the bottom of the panel — **Program**, **Zoom**, **ISO**, or **Stream**. 2. Click **Reset** at the start of the measurement. Reset restarts the **Integrated**, **Range**, and **True Peak** measurements; **Momentary** and **Short-Term** keep running. 3. Run the program (or a representative stretch of it) and read the **Integrated** value. Adjust your mix in the [Audio Mixer](/set-up-your-production/chapter-index-5/the-audio-mixer.md) and measure again. **💡 TIP**\ Loudness is a long-window measurement — don’t chase the Momentary number. Set levels so **Integrated** lands on target across a real stretch of program, and let Momentary swing. ## Related * [Audio Mixer panel](/set-up-your-production/chapter-index-5/the-audio-mixer.md) — setting the levels the panel measures. * [Use the Audio Visualizer](/troubleshooting/use-the-audio-visualizer.md) — tracing where audio flows when something sounds wrong. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://captivatehelp.newbluelive.com/set-up-your-production/chapter-index-5/loudness-panel.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.