What is DR?
The DR algorithm, akin to PLR (Peak–to–Loudness Ratio) or “crest factor,” specifically measures the dynamic
density or lack of dynamics caused by overly aggressive dynamic compression and limiting. Although the companion DRMeter
provides an estimate of the "official" DR Value, only the DROffline utility can generate official values, which are cumulative
over the entire length of a song. Only DROffline can scrub through an entire song or track, resulting in an official DR number.
The complete DR metering system, composed of the realtime DRMeter plus the DROffline batch processor, was
created by Friedemann Tischmeyer to address the need to generate a repeatable, easy to understand numeric value. Seeing a
meaningful and easy to understand indication of dynamic range inspires users to back away from hyper compression.