Waves WLM Native
Waves Loudness Meter Plug-in, Native (Electronic Delivery)

OUR PART #  WLMNA


The Waves WLM Loudness Meter plugin provides precision loudness measurement and metering for broadcast, movie trailers, games, packaged media and more. Fully SoundGrid®-compatible and compliant with all current ITU, EBU and ATSC specifications, the WLM offers comprehensive Momentary, Short Term, Long Term, and True Peak readouts, plus a unique warning and logging system that keeps track of your levels, and lets you know when you’ve exceeded them—or fallen short. Ideal for content creators and post production houses as well as cable head-end facilities, WLM is an affordable, all-in-one cross-platform, multi-format loudness metering software solution.

Features:

  • ITU, EBU and ATSC compliant
  • Foreground, dialog, and average loudness measurements
  • Momentary, Short Term, Long Term, and True Peakreadouts
  • Intelligent dialog sensor detects and measures speech
  • Mono, stereo, and 5.1 components

Multi-Format Metering

Measurement Methods

  • EBU uses foreground audio as the loudness anchor.
  • LM1 measures and averages loudness across the wholeprogram.
  • DIAL uses dialog as the loudness anchor, measuring and averaging loudnessonly when dialog is detected.

Measurement Standards

  • ITU-R BS.1770-2
  • EBU R-128
  • ATSC A/85

Time Scales

  • Momentary
  • Short Term
  • Long Term
  • True Peak

Weighting

  • ITU-R B.S.1770 – K-Weighting
  • Leq(a)
  • Leq(b)
  • Leq(c)
  • Leq(m)

Controls:

  • Short Term displays (in LUFS) perceived short termloudness.
  • Long Term displays (in LUFS) perceived loudnessaveraged across the program signal.
  • Range displays (in LU) the overall loudness rangeacross the program signal that
  • Momentary displays (in LUFS) momentary loudnesslevels, according to the Momentary scale control settings.
  • True Peak displays (in dBTP) inter-sample peaks whichdo not register in the sample data but may occur during reproduction of thedigital signal.
  • Unders displays the number of times the signal goesbelow the specified Short Term Min value indicated in the settings panel.
  • Overs displays the number of times the signal exceedsthe specified Short Term Max value indicated in the settings panel.
  • Measurements Play/Pause determines if program loudnessis registered in the WLM memory for averaging long term loudness range.
  • Follow Transport determines if measurement starts andstops according to host application transport controls.
  • Timer indicates the amount of time measurements havebeen taken and integrated.
  • Reset resets the Long Term, Range, Overs and Underscounters and returns the integration timer to 00:00:00.
  • Method determines the measurement method.
  • Weighting determines the type of weighting filter.
  • Channel determines the channels being measured.
  • Short Term Max determines the maximum short termlevel.
  • Short Term Min determines the minimum short termlevel.
  • True Peak Max determines the maximum true peak level.
  • Target sets the target level reference.
  • Custom Pre Filtering provides low pass (LPF) and highpass (HPF) filters that pre-filter the audio prior to loudness measurement.
  • Momentary Scale determines the scale displayed in themomentary bar meter.
  • Logging displays CSV logging file options.
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