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APU Software Loudness Compressor 5.7.8

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The APU Loudness Compressor is a compressor plug-in that reacts to loudness the way people hear it, measured in LUFS, instead of only to signal peaks. It’s for mixing and mastering engineers who want smoother, more natural level control on vocals, bass and full mixes, and anyone mixing for streaming loudness standards.

APU Software Loudness Compressor 5.7.8 Overview

The APU Loudness Compressor is made by APU Software, LLC. Its developer started the company specifically to build a compressor with LUFS loudness measurement built into its detector. It runs as a VST, AU or AAX plug-in, or as a standalone app. By default, instead of the usual threshold and ratio controls, you set a source range and a target range of loudness, and the plug-in compresses or expands to fit. A Learn mode can set these ranges automatically from your audio as a starting point. If you prefer, you can switch to classic modes such as downward or upward compression, expansion, or soft limiting. A built-in limiter, detector EQ and detailed loudness visuals round it out.

Key Features

Compression in LUFS: Gain changes follow measured loudness, using Momentary, Short-Term or Integrated LUFS, rather than just peaks. This gives a more natural, transparent result. Other detection types: RMS, Peak and True Peak detection are also available, and channels can be linked or processed separately. Source › Target mode with Learn: You set the loudness range you have and the range you want, or let Learn mode set them from your material. Five dynamics modes: Downward and upward compression, downward and upward expansion, and soft limiting, chosen from a drop-down menu. Detector EQ and alternate weighting: Filters and curves (A-weighting, C-weighting, ITU-R 468, ECMA-418) change which frequencies drive the compressor, for example so bass rumble has less effect. Built-in limiter: A look-ahead limiter with Peak or True Peak detection and an output ceiling, plus a Learn-and-Lock gain correction to hit a loudness target.

Extensions Details

File Size48.5 MB
Version5.7.8
DeveloperAPU Software
PublisherAPU Software
LicenseFree

System Requirements

Minimum
OSmacOS
ProcessorApple Silicon
Recommended
OSmacOS
ProcessorApple Silicon

How to Use APU Software Loudness Compressor 5.7.8

Download the installer from the APU Software download page. Run the installer and choose the formats you need: AU, VST, AAX and/or the standalone app. If macOS blocks the installer, go to System Settings → Privacy & Security and click Open Anyway Open your DAW and rescan plug-ins if needed, then load the Loudness Compressor on a track or the master bus. Use the 30-day trial, or activate with your license after buying

Frequently Asked Questions