One of the key features of this meter is its support for a variety of loudness types. You can also choose to split or
link channels, which is particularly useful for multi-channel audio formats such as Dolby Atmos®.
The meter can be configured to use any of the following loudness types:
Momentary
Momentary is a short duration LUFS measurement (400ms), which is useful for processing the audio’s moment-by-moment dynamics. These measurements
utilize K-weighting and channel weighting to improve perceptual accuracy.
Short-Term
Short-Term is a longer duration LUFS measurement (3 seconds), which is useful for processing the audio’s large scale dynamics. Given the longer duration, this
mode is less responsive than momentary, but it can be useful for analyzing the bigger picture of the audio’s dynamics. K-weighting and channel weighting are applied
as with momentary.
Integrated
Integrated is an infinite duration LUFS measurement. K-weighting and channel weighting are applied as with momentary, as well as both relative and absolute gating.
RMS
RMS loudness types use a rolling time interval of 150ms by default, which can be adjusted. RMS is a traditional loudness measurement, which is a good first-order approximation
of perceived loudness. This mode doesn’t apply K-weighting or channel weighting.
True Peak
True Peak loudness types are similar to traditional peak measurements, but they are more accurate as they take into consideration inter-sample peaks. These measurements
use a time interval equal to the configured block size (1ms by default).
Peak
Peak loudness types are a standard peak circuit, operating on a time interval equal to the configured block size (1ms by default). This mode is doesn’t take into
consideration inter-sample peaks.
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