Malibu Meter measures Integrated LUFS, True Peak, and Loudness Range to EBU R128 in real time — as a standalone macOS app. No plugin, no DAW launch. For system audio, individual input devices, or directly from a single app.
libebur128 · 60 fps · 4 input modes · True Peak with 4× oversampling
No restart, no routing, no interface changes. Switch with one click.
Measures signal from any connected input device: microphone, audio interface, mixer. Direct Core Audio AUHAL integration.
Measures everything your Mac outputs — via ScreenCaptureKit. Useful for checking the mix from FCP or QuickTime without inserting a plugin.
Taps the audio of a specific app directly — e.g. Final Cut Pro. With automatic level compensation for Apple's undocumented internal attenuation.
Standard input routing via AVAudioEngine. Fastest startup, for general monitoring tasks.
Malibu Meter uses libebur128 — the reference implementation of EBU R128 / ITU-R BS.1770-4. No DIY approximation.
Gated loudness over the entire program per EBU R128. Silence blocks below −70 LUFS are automatically excluded. Pass/fail against broadcast presets.
Momentary (400ms window) for dialog peaks. Short-Term (3s window) for segments. Both real-time at 60 fps.
Dynamic variation of the program in loudness units. Essential for productions with explicit LRA requirements (e.g. Netflix: max 20 LU).
Measures between samples where normal peak meters are blind. 4× oversampling for inter-sample peaks per BS.1770-4. Not −1.0 dBFS but −1.0 dBTP.
EBU R128 (−23 LUFS), Netflix (−27 LUFS), ATSC A/85 (−24 LUFS), Apple Podcasts (−16 LUFS), and more. Green pass / red fail directly in the meter.
Rendering in sync with the display refresh rate via CVDisplayLink — with stack-up prevention so queued frames don't pile up. No lag.
Broadcast presets:
Nuendo, Audition, iZotope Insight — all require a DAW launch and a plugin insert. Malibu Meter runs standalone, measuring any audio source on your Mac without a DAW.
Measure Final Cut Pro accurately without leaving FCP or inserting a plugin: Process Tap taps the app audio directly — with auto-compensation for Apple's internal attenuation.
libebur128 is the reference implementation — the same basis used by broadcast hardware. Measurements are reproducible and certifiable.
Scales (EBU R128, VU, K-20/14/12, Linear, DIN), custom gradients, color themes — for editing suites that depend on on-screen monitoring.