APU Loudness Leveler

Description

Overview

The APU Loudness Leveler is a professional real-time volume leveler and rider engineered to maintain audio within a precise target loudness range. By setting a specific target loudness and choosing a tolerance level, the plugin continuously applies gain correction to ensure that dialog, vocals, podcasts, streams, or program material remains consistent and balanced without manual automation.

Designed for a “set it and forget it” workflow, the Loudness Leveler offers a sophisticated suite of tools to handle complex audio scenarios. From predictive low-latency operation and detector EQ to built-in limiting and guard modes, it provides the necessary control to prevent unwanted gain changes while maintaining a natural sound. Advanced features like learnable gain correction and secondary target zones allow for extreme precision during final renders and delivery.

Key Details

• Target Loudness Control: Set precise targets with configurable tolerance zones to keep audio hovering at the desired level.
• Five Timing Modes: Includes Tight (25ms), Focus (100ms), Present (400ms), Deep (3s), and Traditional (300ms RMS) for varied response characters.
• Guard Modes: Prevents the leveler from boosting into tails or cutting into transients by holding gain correction outside percentile thresholds.
• Learnable Gain Correction: Supports Average and Integrated learning to tighten final loudness on representative renders.
• Dual Target Zones: Secondary loudness and tolerance zones for specialized sidechain-triggered or low-level behavior.
• Detector EQ: Frequency-aware leveling to ensure the leveler responds accurately to the tonal balance of the source.
• Predictive Operation: Low-latency variants use predictive virtual look-ahead to approximate behavior without adding system delay.
• Flexible Routing: Optional sidechain control and channel-link options to preserve stereo/surround images or correct channel imbalances.

Use Cases

• Podcasting & Voiceover: Automatically leveling disparate voice tracks to ensure a consistent listening experience without pumping.
• Live Streaming: Real-time loudness management for streamers to keep audio levels stable across varying content types.
• Broadcast Delivery: Using Integrated learning and LUFS-standard windows to meet strict delivery specifications.
• Music Production: Utilizing the Deep timing mode for transparent, large-scale consistency on program material.

Installation

The APU Loudness Leveler is available as a digital download. Once purchased, install the plugin into your preferred DAW plugin folder or run the standalone application. Ensure your system supports OpenGL 3.2 for the graphical user interface to function correctly. The plugin is compatible with VST-3, AU, and AAX formats, as well as standalone operation.

Compatibility

• Supported Operating Systems: Windows 10 or higher, macOS 10.14 or higher (Intel and Apple Silicon)
• RAM: 4GB RAM
• Disk Space: 1GB Hard Drive Space
• Plugin Formats: VST-3, AU, AAX (Pro Tools 11+), Standalone
• Additional Requirements: OpenGL 3.2 support

Product Demo

Product Demo