Halo Upmix - IABM Single BaM Product

Halo Upmix - IABM Single BaM Product

Halo Upmix

Halo Upmix

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Full control, intuitive ease


From naturally extracted and expanded soundscapes to full cinematic big-stage enhancement, Halo Upmix delivers all the control you need to fine-tune your surround mix to perfection. With unique centre channel management, including switchable dialog extraction, Halo Upmix is perfect for all types of production from archive restoration and TV through to the full 7.1 feature film experience. An optional 3D extension adds Dolby Atmos bed track (7.1.2) and Auro 3D (7.1.4) compatibility, and Ambisonic outputs. The Halo Upmix algorithms produce a natural, coherent spatial upmix, preserving the character of the original audio without adding any artificial reverb, chorus or delays. With the ‘Exact’ control engaged, Halo Upmix can be used with confidence that the original source integrity is precisely preserved in the downmix.


Natural extension


Powerful real-time analysis of the original stereo material identifies and extracts locational cues to naturally extend the panorama, leaving the inherent character of the original source intact.



  • Coherent spatial upmix

  • Full access to surround balances

  • Low frequency energy control

  • Clear visual feedback

  • Direct control over upmix parameters

  • No artificial reverb, chorus or delays

  • ‘Exact’ downmix mode with in-place audition

  • Neural network dialog extraction


Powerful spatial analysis


Halo also includes a powerful spatial analysis view, intuitively showing the energy distribution of the upmixed panorama. Colour can additionally be used to indicate the speaker source for audio in any position, clearly indicating cases including phantom vs hard centre predominance.


Downmix compatibility


Because Halo Upmix generates a coherent spatial sound, you can be assured of a high-quality downmix. The ‘exact’ mode function ensures ultimate downmix performance in situations where maintaining the relationship between the original, upmixed and downmixed versions is imperative, for example in TV repurposing.


3D Immersive Extension


The optional 3D Immersive Extension introduces additional vertical controls via an expanded user interface including control over Ltm and Rtm placement for Dolby Atmos compatibility. An additional real-time analysis view is also included for the vertical dimension, showing energy distribution of the output audio. The enhanced upmix algorithm allows for simultaneous use of all the original features including dialog isolation and individual channel output control. The 3D Immersive Extension is suitable for numerous applications including sound design, film score, restoration & archive, music and atmospheric soundscape production.


To suit almost any situation


Upmixing includes LCR, 3.1, 4.0, 4.1, 5.0, 5.1, 6.0, 6.1, 7.0 & 7.1.


The Halo Upmix 3D Immersive Extension expands this to 7.1.2 and Ambisonic, and currently supports Avid Pro Tools (AAX) & Steinberg Nuendo (VST3) for Windows and OSX.


Typical applications



  • Stem and group upmixing

  • 7.1 cinematic sound stage enhancement

  • TV stereo to surround upmixing with hard centre

  • Repurposing of original stereo for cinematic release

  • TV archive enhancement for 5.1 broadcast

  • Natural extension of original stereo panoramas and atmospheres

  • Upmix to Dolby Atmos compatible 7.1.2 bed track (3D Immersive Extension required)

  • Upmix to 1st, 2nd & 3rd order Ambisonic (AmbiX format) for VR applications (3D Immersive Extension required)


Additional information

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