EBU R 128 loudness meter software, multi-platform — a recommendation

A well-designed multi-platform EBU R 128¹ compliant loudness meter has been coded by David Neal².
The app meters any input device the OS exposes.
MeterMaid is available for no cost at this URL: https://github.com/reverentgeek/metermaid

• macOS — .dmg (Apple Silicon is aarch64, Intel is x64)
  
• Windows — .exe installer, or the .msi (both x64 and arm64 builds)
  
• Linux — .AppImage, or the .deb / .rpm (both x64 and arm64 builds)

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Image: Screenshot of MeterMaid EBU R 128 compliant loudness meter

Recommended Settings:

LOUDNESS SCALE EBU +9

BAR METERS
TRUE PEAK READOUT
M / S READOUTS
SUGGESTED GAIN
SPECTRUM ANALYZER
AUTO-START

It is ideally suited for loudness metering of event sound systems — as shown in the slide deck below.

An introduction to Fair Loudness-based Measures for Live Events

Click link to view a self-contained HTML presentation in your web browser, or right-click link to download:

NoteFair loudness-based measures for live events

An introduction for live event producers and relevant stakeholders

Keyboard navigation for HTML presentation slide deck; MENU is located bottom left

KEY	ACTION
→ , ↓ , SPACE , N , L , J	next slide
← , ↑ , P , H , K	previous slide
E	PDF export mode

Further Information

If you would like to arrange for a training session, on-site setup and calibration, or would like further explanations, please get in touch using the contact form or book an online meeting .

Thank you for your time.

References

1. European Broadcasting Union. TECH 3343: Guidelines for Production of Programmes in Accordance with EBU R 128. 2023 [accessed 2026 Oct 9]. https://tech.ebu.ch/docs/tech/tech3343.pdf

2. Neal D. MeterMaid [EBU R 128] (reverentgeek). 2026 [accessed 2026 Oct 9]. https://github.com/reverentgeek/metermaid