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DROffline MkII

Metering by MAAT

DROffline MkII File Analyzer

MAAT’s DROffline MkII is the batch measurement companion application to our official DRMeter MkII real time DR + R128 measurement plug-in.

The Only (Practical) Way to Measure DRi

MAAT’s DROffline MkII batch measurement app is the only software that automatically measures all mandated R128 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 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 easy drag & drop interface.

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 realtime 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 R128 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?”

Not Only The Doctor Has a Companion

The MAAT DROffline MkII release is MAAT’s third step in bringing forward the legacy of the PMF’s legendary TT Dynamic Range metering system, which was certainly the most popular metering plug—in of the last decade. DROffline MkII has been modernized to work with current international Loudness metrics, plus emerging measurement methods that provide more meaningful numbers than legacy methods.

The companion DRMeter MkII is a plug-in that manually generates DRi values when applied to the loudest passages in a track. Due to its plug–in nature, it can only measure official DR values in real time and with a good bit of forethought.

Features

DRO2 measures DR, R128 and A/85. Plus, it has HRA (high resolution audio) support and a whole lot more! Did we mention it’ll romp though your directory far faster and more securely than cloud–based utilities?

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)

File Metadata: Additional Informative Metrics

  • File Name
  • Absolute Path
  • File Format
  • Sample Rate
  • Word Length
  • Bits Used (filled)

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
  • RMS RIGHT

Miscellaneous: Comprehensive, Modern & Fast

  • Cross–platform
  • Fast local background processing
  • More accurate than many other “measurement” products
  • More secure than cloud services
  • 44.1 to 384 kHz sample rate
  • LPCM (WAV, BWF, AIFF) or Lossless (FLAC, ALAC)

Supported Formats:

  • 24-bit WAV, AIFF & FLAC file types.
  • Sample rates from 44.1 to 384 kHz.

System Requirements

Mac:

  • macOS 10.8 and newer, 32 & 64 bit.

PC:

  • Windows 7 and newer, 32 & 64 bit.

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