Solid State Logic has implemented further support of immersive audio for ATSC 3.0, Dolby Atmos and MPEG-H in updates for the System T software architecture.
With the emergence of 3D immersive audio in broadcast as well as in film, SSL’s new three-axis co-ordinate panning for System T incorporates two- or four-channel overhead speakers into the available channel and bus formats. As well as positioning mono and stereo sources in a 3D sound field, System T can accept multichannel 3D sources and fine-tune spatial components as they are added to the final production mix. This is essential in multilingual sports productions where effects and ambience multichannel 3D ‘beds’ will be used extensively as the basis of the individual programme mixes.
Supported formats include 5.1.2 and 5.1.4, 7.1.2 and 7.1.4 (with side channels as well as rear channels). A 4.0.4 format designed primarily for beds and stems ensures that the centre channel remains exclusively available for dialogue and commentary. The 4.0.4 format is also ideal for the output of the new generation of VR mics that capture a four-channel ambisonics scene representation. This can then be rendered in a multichannel format for incorporation into an ‘object/bed’ based immersive mix.
Intelligent downmixing means that conventional 5.1, stereo, and mono mixes can be created simply by routing a 3D channel or stem to a suitably formatted master bus. Downmix coefficient control of the overhead (top) to floor (bottom) mix and the side channels to front and rear, permits user adjustment of the system derived defaults. An elegant unified approach to divergence processing eliminates the complexity often found in the panning solutions offered on workstations and other digital consoles, which require multiple parameters to determine the balance between the discrete and phantom components of the centre and side channel signals.
Partnering the new 3D channel and bus formats is a 12-channel monitoring section. This includes 49 12-channel monitor inputs, configured as a primary monitor input and two 24-channel preselectors, together with a 12-channel AFL monitor bus, and a pair of 12-channel insert points for external processing and rendering engine returns, offering all the monitoring tools required in a 3D production environment. An additional secondary main monitor output allows use of both conventional monitor speakers as well as a secondary sound bar or other domestic style monitor setup for real-world quality checking. A further two stereo Alt outputs can be used for nearfield monitors or for simultaneous secondary program monitoring in multi-language productions. Independent channel level and delay adjustment is available for both main monitor outputs.
Completing the Immersive feature set in System T is an extensive collection of processing tools. In addition to all the standard path processing (EQ, Filters, Dynamics 1, Dynamics 2, Delay) including up to 7.1.4 capability, the System T FX rack includes immersive format versions of the Bus Compressor, Multiband Compressor, Enhancer, Dynamic EQ, G flex EQ, All Pass Filter, De-Noiser and Summing Module.
More: www.solidstatelogic.com
