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VocALign Pro 4 Crossgrade from Revoice Pro 4

Vocal Processing by Synchro Arts

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"I've been using VocALign since it came out. It has saved me on a ton of projects!"
. Grammy-winning mix engineer | Michael Jackson, Beyonce, Jay-Z & more.

Advanced Automatic Audio Alignment

Important Upgrade Note: This is a specific Crossgrade for existing Revoice Pro 4 owners. The full version of VocALign Pro 4 and following upgrade are also available:

VocALign Pro 4 is the most advanced version of the legendary VocALign program, providing instant tight alignment of one audio signal to another. Simply capture a Guide signal with the right timing, capture a Dub signal to be aligned, press one button, and a new aligned Dub is generated and returned to your DAW.

Key Features

  • Automatically analyzes the energy patterns of two audio signals and edits one to match the timing of the other.
  • Includes basic and advanced alignment and editing algorithms.
  • Works with voice, musical instruments and sound effects.
  • Provides time-saving and quality benefits for ADR, tightening double-tracked vocals and backing harmonies, foreign language dubbing, etc.
  • Simple, intuitive Audio Suite AAX, VST3/ARA and AU plug-in integration for most popular DAWs.
  • The pitch of aligned audio is unchanged.
  • Full ARA2 (Audio Random Access) support for an even faster and easier workflow with compatible DAWs.

Music Editing Using VocALign Pro 4

  • Perfectly-aligned double-tracked vocals and/or instruments
  • Tighter and clearer backing vocals
  • Shorter overdub sessions
  • Easy re-grooving of recorded vocals for remixing

Audio Post-production and Multimedia Using VocALign Pro 4

  • Perfect lip-syncing
  • Reduced studio time re-recording dialogue
  • More accurate and convincing foreign dialogue replacement
  • Tighter Foley and sound effects tracks


  • VocALign PRO 4 automatically aligns two audio signals so that the timing of one matches the other.
  • Simple, intuitive operation with Audio Suite, AAX, VST3 and AU plug-ins work with popular DAWs.
  • Sophisticated pattern matching techniques:
    • Rejects guide track noise.
    • Works with different speakers, singers, words, instruments and sounds.
  • The aligned audio can be auditioned within VocALign PRO 4.
  • Scrolling, scalable display allows instant visual confirmation of sync.
  • User interface allows adjustment of selected audio regions for processing.
  • User-adjustable processing presets ensure optimal performance.
  • Pitch of aligned audio is unchanged.
  • Full ARA2 (Audio Random Access) support for tighter integration with the latest versions of:
    • Steinberg Cubase Pro & Nuendo
    • Presonus Studio One Professional
    • Cakewalk by Bandlab
    • Reaper

Advanced Features and Functions in VocALign PRO 4

  • Increased alignment accuracy: achieved with a more sophisticated pattern recognition algorithm.
  • Enhanced TimeMod (time compression/expansion): optimised for single-pitch signals. Basic TimeMod algorithm is also available for more complex signals.
  • Protected signal blocks: user can mark sections of the replacement (dub) signal to not be time-modified during alignment.
  • Comprehensive audio preview options: allows playback of sections or the whole signal(s) before and after alignment, individually or together. (In Pro Tools version).
  • User settable Sync Points: targets audio alignment at specified pairs of points in the two signals.
  • Longer maximum signal length: up to 5 minutes.

Benefits Using VocALign PRO

Editors in film, video post-production, music and multimedia now have more control over any required audio alignment editing. They will be able to target the alignment of the replacement signal (Dub) to the Guide where it is required and can keep sections of the Dub from being edited by specifying Protected areas. The Sync Points feature can help the algorithm sync matching points in very different signals.

These features will be invaluable for certain types of noisy or reverberant Guide signals and especially useful for foreign dialogue replacement. In addition, the new Preview Controls allow much more detailed examination of parts or all of the two signals, together or separately, both before or after alignment to confirm the quality of editing and alignment.

The other features such as improved overall quality of automatic alignment and micro-editing will save the user even more time and frustration.

How Does VocALign Pro Work?

VocALign works by applying varying amounts of time stretching or compression to one signal (called the ‘Dub’) to make its energy peaks and troughs align in time with a ‘Guide’ signal. It does this in three main steps as shown in the block diagram below.

  1. VocALign analyses the captured Guide and Dub audio signals using identical spectrum analysers to produce time-varying energy patterns.
  2. Then it uses advanced pattern recognition techniques to examine the energy patterns and determine the best way to ‘warp’ the time structure of the Dub signal so that its energy pattern is matched to that of the Guide. The time-warping path describes the best time-distortion of the Dub for matching to the Guide.
  3. The time-warping path is fed to an audio editing processor that time-compresses and expands the Dub audio to create the aligned version based on the path. It is this edited version of the Dub that is returned to the audio editing software for the desired use.

System Requirements


  • Intel Processor
  • Mac OS 10.6 or higher
  • Audio File Format: As supported by host editor
  • Works with all Pro Tools hardware
  • iLok USB Key

Compatible DAWs include:

  • Pro Tools 8.1.1 to 2019.6
  • Logic Pro X 10.0.0 to 10.4.8
  • Studio One Professional 3.0 to
  • Cubase Pro 4.5.2 to 10.0.40
  • Nuendo 4.3 to 10.2.0
  • Ableton Live 9.7.5 to 10.1
  • FL Studio 12
  • Adobe Audition CC 8
  • Reaper 5.1 to 6.02
  • Logic Pro 9.1.8

Not compatible with:

  • Digital Performer
  • Reason
  • Cubase Elements
  • Cubase LE or Cubase AI
  • Final Cut Pro


  • Windows 10, Windows 8, Windows 7, Vista or XP
  • Audio File Format: As supported by host editor
  • Works with all Pro Tools hardware
  • iLok USB Key

Compatible DAWs include:

  • Pro Tools 8.1.1 to 2019.6
  • Studio One Professional 3.0 to
  • Cubase Pro 4.5.2 to 10.0.50
  • Nuendo 4.3 to 10.2.0
  • Ableton Live 10.1
  • Cakewalk by BandLab 2019.05
  • FL Studio 12
  • Reaper 5.35 to 6.01

Not compatible with:

  • Digital Performer
  • Reason
  • Cubase Elements
  • Cubase LE or Cubase AI
  • Pyramix
  • Samplitude
  • Sony Vegas

Important Note: A physical iLok USB Key is required in order to activate this product.

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