Waves WLM Plus Loudness Meter: Loudness Meter Plugin

It’s an audio streaming audio world—whether for music podcasts YouTube games broadcast movie trailers commercials or other media. WLM Plus gives you the confidence to know your audio is fully compliant with all current ITU EBU and ATSC specifications and hits crucial target levels. WLM Plus is loaded with extras. Tweak levels using the plugin’s precision peak limiter and gain trim. Check multiple formats with short- and long-term readings—and even log the results.

Complete Compliance

WLM is fully compliant with all current loudness measurement standards: the 2nd-generation ITU-R BS.1770-3 protocol the up-and-coming EBU R 128 standard and ATSC A/85 for broadcast and digital television.

Multiple Measurement Methods

Choose from the EBU’s detailed measurement methods the LM1 protocol that averages loudness across an entire program or DIAL which uses dialog as the loudness anchor for measuring and averaging loudness.

Measure Audio Over Time with Comprehensive Weighting

WLM incorporates frequency weighting based on the Fletcher-Munson curve as well as timescales (Momentary Short Term Integrated or True Peak) to measure audio behavior over time.

No Limits—Except for Precise Limiting

You can fix audio levels within WLM—there’s no need to go back and forth between plugins. The True Peak limiter uses Waves’ acclaimed limiting technology to tame peaks while a Gain trim control sets the final output.

Presets for Common Level Requirements

WLM includes presets that fulfill the most common post-production and content requirements. Even generate CSV log files to document the readings of all 3 measurement methods simultaneously.

Features:

• Meets the critical requirements of all streaming platforms
• Provides momentary and short- and long-term LUFS readings
• Includes True Peak limiter and gain trim for precision output control
• Select one of 5 different weightings or none
• True Peak readings minimize the risk of distortion from transcoding
• LU reading gives an accurate indication of dynamic range
• Choose from 5 different momentary scales
• Custom high-pass and low-pass pre-filtering

Requirements:

Platform	CPU	RAM	Disk	Notes	Additional Requirement	Audio Card	Ports	Internet Required	32 Bit Support	64 Bit Support	Plugins
mac	Intel or Silicon Architecture	8	16		Minimum: 1024x768 Recommended: 1280x1024 / 1600x1024 USB displays are not supported as the primary display.			0	0	0
windows	X64 compatible Intel or AMD CPU	8	16		X64 compatible Intel or AMD CPU			0	0	0