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Loudness Compressor v1.9.15

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MacOS Windows User Manual

The user manual above is also available on the live docs site.

System requirements: macOS 10.14 (x86, x64, ARM), Windows 10 (x86, x64), OpenGL 3.2.
Supported plug-in types: VST, AU, AAX (Pro Tools 11+).

Loudness Meter v1.9.15

Choose your operating system to download the latest installer below.

MacOS Windows User Manual

The user manual above is also available on the live docs site.

System requirements: macOS 10.14 (x86, x64, ARM), Windows 10 (x86, x64), OpenGL 3.2.
Supported plug-in types: VST, AU, AAX (Pro Tools 11+).

Release Notes

Version 1.9.15

• Replace look-ahead dial w/slider (compressor)
• Fix sidechain layout (compressor)
• Improve dials layout (compressor)
• Fix notification coloring

  Version 1.9.14

• Drag & drop file open support (meter)
• Look and feel improvements

  Version 1.9.12

• Lots of cosmetic improvements

  Version 1.9.11

• Improve visualization rect cropping glitch
• Update tab for checking latest product versions
• Additional minor fixes and improvements

  Version 1.9.10

• Fix transfer function visualization for gate (compressor)
• Detect all loudness types for file i/o (meter)
• Improve quick-access layout
• Improve panel and other layout elements

  Version 1.9.9

• Fix look-ahead behavior in some cases (compressor)
• Transparent statistics group (meter)

  Version 1.9.8

• Improve visualizations

  Version 1.9.7

• Logo update

  Version 1.9.6

• Add Soft Limiting dynamics type (compressor)
• Extend source/target min to -70.0 to match LUFS gate
• Adjust default range/threshold settings

  Version 1.9.5

• Fix license key displaying incorrectly (compressor)

  Version 1.9.4

• Add makeup/bypass/gate low-level modes for source:target dynamics type (compressor)
• Panel texture and shadowing improvements

  Version 1.9.3

• Update default theme
• Various minor fixes

  Version 1.9.2

• Fix single-value slider thumb offset, improve coloring

  Version 1.9.1

• User interface improvements
• Revert maximum loudness range change, causing issues with sliders

  Version 1.9.0

• Expand maximum loudness range
• Improve Atmos histogram alignment
• Fix histogram bucket range end text

  Version 1.8.9

• Fix auval validation failure
• Minor fixes and improvements

  Version 1.8.8

• Transfer function raster type (compressor)
• Fix layout issues, give manual range its own row
• Exclude threshold from manual range
• Center histogram buckets for channel-linked

  Version 1.8.7

• History and histogram rendering quality improvements
• Fix settings tab parameters not updated in some cases

  Version 1.8.6

• Add Save as Default preset/theme manager buttons
• Fix missing tooltips for preset/theme manager buttons
• Fix histogram hold toggle location in visualization tab

  Version 1.8.5

• Fix missing threshold for alternate dynamic types in peak modes (compressor)
• Minor gui improvements

  Version 1.8.4

• Reduced CPU usage for LUFS calculations
• Reduced CPU usage during source/target range changes
• Switch from bucket count to bucket size for consistency
• Support manual BPM configuration in settings tab
• Flip histograms to be vertical
• Minor fixes and improvements

  Version 1.8.3

• Possible fix for OpenGL compatibility issues
• Add error message when OpenGL >= 3.2 is not available

  Version 1.8.2

• Switch OpenGL from compatibility profile to core profile
• OpenGL related performance optimizations
• Layout improvements, auto/manual range configuration, show/hide thresholds (meter)

  Version 1.8.1

• Learn function for source/target ranges

  Version 1.8.0

• Fix default preset/theme migration
• Cleanup button corners

  Version 1.7.12

• Various user interface improvements

  Version 1.7.11

• Improvements to visualization / threshold rendering (meter)

  Version 1.7.10

• Improvements to parameter defaults
• Display ratio as source/target instead of target/source

  Version 1.7.9

• Improve texture compatibility

  Version 1.7.8

• Relocate side-chain to fix layout glitch
• Fix normal color slider thumb contrast
• Tweaks to panel texture
• Improve performance with automation w/editor open
• Fix potential deadlock during rendering

  Version 1.7.7

• Add show thresholds option (compressor)
• Various minor fixes and improvements

  Version 1.7.6

• Fix panel rendering when delta field is disabled

  Version 1.7.5

• Style toggle buttons
• Improved panel texturing

  Version 1.7.4

• Increase the font size

  Version 1.7.3

• Loudness axis ticks/labels
• Enable minimize/maximize window buttons for standalone
• Fix loudness range text box editing (compressor)
• Fix ordering on delta histograms (compressor)
• Quick-access manual range slider when auto-range disabled (compressor)
• Exclude threshold from manual range, except when changing (compressor)

  Version 1.7.2

• Fix A/B buttons showing over zoomed visualization (compressor)
• Fix some text elements not fully displaying
• Fix visualization area clicks not always registering
• Fix minor layout issues
• Textured panel background shader

  Version 1.7.1

• Textured meters
• Quick-access buttons for auto-range & breath residual (compressor)

  Version 1.7.0

• User interface cleanup

  Version 1.6.16

• Simplify switching between raster types and dynamics types

  Version 1.6.15

• Support Dolby Atmos/SMPTE channel orderings

  Version 1.6.14

• Fix sidechain output! (compressor)

  Version 1.6.13

• Improve license input visibility (compressor)

  Version 1.6.12

• Small improvements to context sensitive help (compressor)

  Version 1.6.11

• Disable output gain during bypass! (compressor)

  Version 1.6.10

• Support traditional compression/expansion configuration types in addition to source => target (compressor)

  Version 1.6.9

• Knobs, dry/wet, output gain (compressor)
• Aesthetic improvements

  Version 1.6.8

• Support for Pro Tools
• Support mouse wheel for combo-boxes
• Condense user interface a little

  Version 1.6.7

• Support for macOS Mojave (10.14)

  Version 1.6.6

• Output types: Standard, Bypass, Delta (compressor)
• Fix output offset in extreme cases (compressor)

  Version 1.6.5

• Improved preset save
• Fix missing source knee threshold drawing
• Fix missing font characters

  Version 1.6.4

• Default manual reset, with a reasonable general-purpose default loudness range
• Default breath residual mode enabled

  Version 1.6.3

• Aesthetic improvements

  Version 1.6.2

• Fix mono channels when using stereo loudness types

  Version 1.6.1

• Fix discontinuities at compression curve extremes (compressor)

  Version 1.6.0

• Presets & Themes management
• A/B comparison buttons (compressor)

  Version 1.5.2

• Minor graphical improvements

  Version 1.5.1

• Fix Logic Pro validation failure
• Darken the shading a bit outside the visualizer HUD

  Version 1.5.0

• Improve/fix breath residual feature (compressor)

  Version 1.4.9

• Support loading from file for analysis (meter)

  Version 1.4.8

• Many cosmetic & visualizer improvements, configurable bit-depth

  Version 1.4.7

• Fix mutex double-lock freeze on latency change in Cubase (compressor)

  Version 1.4.6

• Additional optimizations and re-fix plug-in resize

  Version 1.4.5

• Fix FLStudio crash on startup (meter)

  Version 1.4.4

• Fix plug-in resize AU JUCE bug

  Version 1.4.3

• Reduce overlay redraw overhead

  Version 1.4.2

• Reduce CPU usage when editor is closed (meter)

  Version 1.4.1

• Fix rare crash due to text rendering race condition
• Fix settings apply/discard buttons sometimes enabled unnecessarily
• Apply look and feel to standalone application audio settings dialog
• OpenGL performance improvements

  Version 1.4.0

• Improve sound quality (compressor)
• Improve performance (especially meter)
• Smoother history rendering
• Improve various minor visual elements
• Fix stereo RMS reset in certain cases
• Support offline license activation (compressor)

  Version 1.3.1

• Improve performance via more reasonable default block size (meter)
• Minor aesthetic improvements

  Version 1.3.0

• Fixes & improvements to stereo and integrated LUFS
• Fix for combo-boxes closing themselves.
• Fix for trial/license activation glitches while offline (compressor).

  Version 1.2.2

• Updated EULA: Added a commitment to provide unprotected builds in the event the business ceases operations or goes offline, ensuring long-term access to the software for licensed users.

  Version 1.2.1

• Support LRA, improvements to peak/min history (meter)

  Version 1.2.0

• Initial release of APU Loudness Meter
• Bug fixes and quality improvements (compressor)

  Version 1.1.0

• Fix knee boundary artifacts (compressor)

  Version 1.0.4

• Eliminate visual discontinuity during history length increase (compressor)
• Improve target range behavior (compressor)

  Version 1.0.3

• Reduce pixel shader artifacts (compressor)

  Version 1.0.2

• Fix license status text not updating in certain cases (compressor)

  Version 1.0.1

• Enable sandbox safe for audio unit compatibility (compressor)

  Version 1.0.0

• Initial release of APU Loudness Compressor

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)

Demo video song credits:

• Annasara - A Lifetime Rolls By, licensed via Audiio.