This installer includes all the latest APU Software plug-ins and applications. See the individual product sections below for separate installers, ed software formats, and manuals.

Included: APU Loudness Meter, APU Loudness Compressor, APU Dynamics Optimizer, APU Loudness Limiter.

The APU Loudness Compressor is a compressor/expander designed to modern loudness types (LUFS, True Peak). The result is a compressor which sounds more transparent. The compressor is also capable of operating in a more traditional manner, using RMS and Peak units of measurement, so you can have your cake and eat it too. For more information on the differences between RMS/Peak and LUFS, you can review my LUFS blog post.

The APU Dynamics Optimizer is a dynamics optimization tool designed to modern loudness types (LUFS, True Peak). Underneath the hood, the optimizer uses the same compression engine as the APU Loudness Compressor, but benefits from the full audio waveform instead of real-time measurements. This allows the gain envelope to be meticulously optimized across the entire waveform.

The APU Loudness Limiter is a real-time limiter designed to multiple loudness types simultaneously. The limiter can be configured to use LUFS, True Peak, RMS, and/or Peak loudness types. This allows you to target multiple requirements simultaneously, such as a specific LUFS target and a specific True Peak target. Internally, the ballistics of the limiter are adjusted to accommodate the different loudness type limiter settings.

The APU Loudness Meter plug-in is a free dynamic range analysis tool ing a variety of loudness types (LUFS, True Peak, RMS, Peak). View changes to your audio’s loudness in real-time or get a bigger-picture look with configurable history and histogram views. View both real-time and accumulated statistical information all from one screen.