Waves Introduce WLM Loudness Meter

Keep track of levels for broadcast, games, movie trailers, packaged media and more      11/01/12

Waves Introduce WLM Loudness Meter


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Waves Audio is now shipping the Waves Loudness Meter (WLM) plug-in. The WLM provides precision loudness measurement and metering for broadcast, movie trailers, games, packaged media and more. Waves says that, 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.
Fully 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 users' levels and lets them know when they have exceeded them – or fallen short. WLM offers foreground, dialog and average loudness measurements, and an intelligent dialog sensor detects and measures speech. The plug-in features mono, stereo and 5.1 components. WLM Controls
  • Short Term displays (in LUFS) perceived short term loudness.
  • Long Term displays (in LUFS) perceived loudness averaged across the program signal.
  • Range displays (in LU) the overall loudness range across the program signal
  • Momentary displays (in LUFS) momentary loudness levels, according to the Momentary scale control settings.
  • True Peak displays (in dBTP) inter-sample peaks that do not register in the sample data but may occur during reproduction of the digital signal.
  • Unders displays the number of times the signal goes below the specified Short Term Min value indicated in the settings panel.
  • Overs displays the number of times the signal exceeds the specified Short Term Max value indicated in the settings panel.
  • Measurements Play/Pause determines if program loudness is registered in the WLM memory for averaging long term loudness range.
  • Follow Transport determines if measurement starts and stops according to host application transport controls.
  • Timer indicates the amount of time measurements that have been taken and integrated.
  • Reset resets the Long Term, Range, Overs and Unders counters 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 term level.
  • Short Term Min determines the minimum short term level.
  • True Peak Max determines the maximum true peak level.
  • Target determines the target level.
  • Custom Pre Filtering provides low pass (LPF) and high pass (HPF) filters that pre-filter the audio prior to loudness measurement.
  • Momentary Scale determines the scale displayed in the momentary bar meter.
  • Logging displays CSV logging file options.
Pricing and Availability:
The WLM Waves Loudness Meter plugin is now available with a U.S. MSRP of $400.00 (Native only), with a special introductory price of $299.00 being offered for a limited time. More information:

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