APU Loudness Limiter

Description

Product Demo

Additional Details

Manufacturer System Requirements:

• Supported Operating Systems: Supported OS: Mac, Windows
• RAM Requirements: License Method: Computer
• Disk Space: License Method: Computer particularly useful for multi-channel audio formats such as Dolby Atmos® . In addition to standard Threshold, Ceiling, Attack, and Release parameters, the limiter includes look-ahead for preemptive gain reduction. You can select between Natural and Inertial ballistics types, and a Linear Release mode provides a constant rate of gain change rather than a traditional ballistic envelope. A budget system for look-ahead and attack times allows you to adjust these latency-inducing parameters in real-time without causing audio artifacts. Optional dithering is also available. Learned gain compensation can measure Average or Integrated output loudness over a representative pass, calculate a correction toward the selected target, and lock that correction for normal playback or export. The stored correction is applied before Peak and True Peak limiting so the configured output ceiling remains protected. The real-time visualization displays the loudness of the source, target, and output signals over time. You can switch between a rolling history view and a histogram showing the distribution of loudness levels. Diagnostic tools include breath residual visualization, which shows where the limiter is working hardest to meet the target gain, and a snapshot system for comparing loudness histograms. The limiter includes presets targeting the loudness and peak requirements of various streaming services and broadcast standards, such as Spotify, Apple, and EBU R128. It also supports external sidechain input for dynamics processing. Add to Cart ($40.00) Download (30-day Trial) Note: Existing customers can apply their loyalty discount on the cart page. System requirements: macOS 10.14 (x64, ARM), Windows 10 (x86, x64), OpenGL 3.2. Supported software formats: Standalone application, VST, AU, AAX (Pro Tools 11+) . Measurement Modes One of the key features of this limiter is its support for a variety of loudness types. The limiter’s detection circuitry can be configured to use either LUFS and/or traditional measurement units (RMS, Peak). You can also choose to split or link channels, which is particularly useful for multi-channel audio formats such as Dolby Atmos® . The limiter’s detection circuitry can be configured to use any of the following loudness types: Momentary Momentary is a short duration LUFS measurement (400ms), which is useful for processing the audio’s moment-by-moment dynamics. This mode is responsive the overall dynamics control. Back to top Credits This software was developed by APU Software, LLC and is available as VST (windows x64/x86, macOS universal), Audio Unit (macOS universal), Pro Tools (windows x64/x86, macOS universal), or Standalone Application. The software libraries below are utilized for portions of the software: JUCE (cross-platform audio and user interface framework) Boost (header-only algorithms) libebur128 (loudness measurements) melatonin_blur (blur effects) Demo video song credits: Tea Time – Warm-Up Rhythm, licensed via ShutterStoc Skip to content APU Software Open navigation Products Meter Leveler Compressor Optimizer Limiter Spectrum Contour TrueGain Research Loudness Targets Filter Design Results Plugin Analysis Company Blog Newsletter Testimonials Manuals Download Cart APU Software APU Loudness Limiter True-peak-safe limiting with LUFS control $40.00 APU Loudness Limiter is a real-time limiter supporting multiple loudness measurement types simultaneously, including LUFS (Integrated, Short-term, Momentary) and traditional metrics (RMS, Peak, and True Peak). True Peak detection accounts for inter-sample peaks. You can also choose to split or link channels, which is particularly useful for multi-channel audio formats such as Dolby Atmos® . In addition to standard Threshold, Ceiling, Attack, and Release parameters, the limiter includes look-ahead for preemptive gain reduction. You can select between Natural and Inertial ballistics types, and a Linear Release mode provides a constant rate of gain change rather than a traditional ballistic envelope. A budget system for look-ahead and attack times allows you to adjust these latency-inducing parameters in real-time without causing audio artifacts. Optional dithering is also available. Learned gain compensation can measure Average or Integrated output loudness over a representative pass, calculate a correction toward the selected target, and lock that correction for normal playback or export. The stored correction is applied before Peak and True Peak limiting so the configured output ceiling remains protected. The real-time visualization displays the loudness of the source, target, and output signals over time. You can switch between a rolling history view and a histogram showing the distribution of loudness levels. Diagnostic tools include breath residual visualization, which shows where the limiter is working hardest to meet the target gain, and a snapshot system for

Requirements Source: manufacturer or supplier product documentation.