Flufs

Flufs is a state-of-the-art Max for Live loudness meter, designed for both real-time and offline analysis. It’s fully accessible to blind, visually impaired, and sighted users.

Flufs can analyze multi-channel audio files, normalize to a loudness target, and, if you're into data science like me, export loudness data to a CSV file—either in single or batch mode. It analyzes a 5-minute audio file in just 1–2 seconds.

Flufs is very light on the CPU — to the extent that you won’t even notice it on modern computers. It features a resizable floating window, 11 color themes (including options for color blindness), and 19 industry loudness target presets. It also integrates seamlessly with popular screen readers like VoiceOver and NVDA, making it compatible with braille displays and other assistive technology. Every feature is accessible via keyboard shortcuts or tabbing.

A list of keyboard shortcuts