Maat DROffline MkII

Background Batch Measurement & Logging

The official DRi (integrated Dynamic Range) and R 128/A85 measurement app, companion to DRMeter MkII, plus a whole lot more!

Measure R128 Loudness, DRi & More

MAAT’s DROffline MkII batch measurement app is the only software that automatically measures all mandated R 128 parameters, along with official DRi and a host of key metrics that your DAW may not display. All this in the background and out of your way. Offering essential options for musically justified, file–based metering, DROffline MkII offers 24 different measurements, including integrated DRi Dynamic Range and PSR, the emerging Sample Peak–to–Short Term Loudness Ratio. One file can be evaluated, or an entire directory can be measured in batch mode, all in the background while you continue to work.

DROffline MkII generates both plain text and tab–delimited text logs, with optional engineer and studio metadata, so you can hand your clients good looking reports that they can use for replication, distribution and as documentation for post, provenance, or chain of evidence.

Attention Pro Tool & Logic users! DROffline MkII offers easy access to all audio statistics and metadata, with an instant drag & drop interface. Speaking of drag & drop, DRO2 works in conjunction with DRMeter MkII to run measurements when you drop an audio file onto a DRM2 instance in your DAW.

What is DR?

The DR algorithm, related 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 MkII provides a manual measurement of the "official" integrated DR or DRi, only DROffline and DROffline MkII can generate official values automatically and in the background.

The complete DR metering system, composed of the real time DRMeter MkII plus the DROffline MkII 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.

Is there a good reason to use DR?

Unlike Loudness–only R 128 and BS. 1770 meters, DR measures dynamic range from the perspective of a music engineer’s needs. In contrast, “R128” and 1770 are designed to control loudness for commercials, not measure dynamic range for music, especially pop music.

DR isn’t designed for broadcast loudness control, it’s purpose is to gauge the amount of dynamic range reduction, or the absence of dynamic range contrast. Designed by a member of the EBU ploud committee, the same body that created R128, DR informs an engineer about how much the mix has been “stepped on,” dynamic range-wise, not about “will it pass through a broadcast chain without loudness reduction?”

Divide & Conquer

Bringing forward the legacy of the PMF’s legendary TT Dynamic Range metering system, DROffline MkII works with all current international Loudness metrics plus emerging measurement techniques that provide more meaningful numbers than R128 methods alone. Granted, R128 or A/85 is essential for all modern pro workflows, but other Loudness meters only provide half the story.

The companion DRMeter MkII is a plug-in that manually generates DRi values when applied to the loudest passages in a track, and is the perfect real time complement to DROffline MkII for quickly estimating both Loudness and subjective loudness.

Features

Loudness Measurements

Mandated R128 & A/85

Maximum True Peak (joint measurement as per ITU)

Maximum Momentary (joint measurement as per ITU)

Maximum Short–Term (joint measurement as per ITU)

Integrated Loudness (joint measurement as per ITU)

Loudness Range (joint measurement as per ITU)

Loudness Measurements Supplemental

DRi (joint measurement as per PMF)

DRi LEFT

DRi RIGHT

Maximum True Peak LEFT

Maximum True Peak RIGHT

Maximum Momentary LEFT

Maximum Momentary RIGHT

Maximum Short–Term LEFT

Maximum Short–Term RIGHT

Maximum Sample Peak (SPPM) LEFT

Maximum Sample Peak (SPPM) RIGHT

Maximum Sample Peak (SPPM joint measurement)

Minimum PSR (Sample Peak–to–Short–Term Loudness

joint measurement as per AES)

RMS LEFT

File Metadata Additional Informative Metrics

File Name

Absolute Path

File Format

Sample Rate

Word Length

Bits Used (filled)

Comprehensive, Modern & Fast

Cross–platform

Fast local background processing

More accurate than many other “measurement” products

More secure than cloud services

44.1 to 384kHz sample rate

LPCM — WAV, BWF, AIFF

Lossless — FLAC, ALAC (macOS–only)

RMS RIGHT

COMPATIBILITY

 MAC OSX    WINDOW

 Windows Requirements

• Host application compatible with:
  • VST plugins

• Windows 7 or higher

 Mac Requirements

• Host application compatible with:
  
  • AAX Native plugins
  • Audio-Unit plugins
  • VST plugins
  • VST3 plugins

• Mac OS  10.9 or later (64-bit only)