2.1.2. Loudness type
The loudness type combo-box allows you to configure which type of loudness measurement is used by the meter. Each loudness type supports channel-split or channel-linked processing. Channel-split treats each channel independently, while channel-linked integrates across all channels.
Two of the supported loudness types use a popular modern measurement standard for perceived loudness called LUFS. These loudness types are momentary (400ms window) and short-term (3s window).
There are also two peak loudness types (True Peak and Peak) as well as traditional RMS (300ms window). True Peak is an improvement on peak which takes into consideration waveform behavior between samples, which allows it to properly respond to inter-sample peaks. Peak mode loudness types use a blocksize window.