Broadcast News

Bookmark and Share
06/06/2017

Object Based Audio In Broadcast – The Next Challenge

News Image
The world of broadcast audio is on the verge of a major revolution, says Peter Poers, Managing Director, Jünger Audio. Numerous "3D Immersive" formats are under development and will soon find their way into mainstream broadcast production and distribution.

As well as Immersive Audio there is Object Based Audio (OBA), which allows the end user to personalise their listening experience by selecting from a number of audio sources and controlling the level – and maybe even the position of an 'object' – in the mix.

In OBA, an "object" is essentially an audio stream with accompanying descriptive metadata. The metadata carries information about where the engineer placed the object in the mix and at what level, and is used to re-create, or render, the audio experience for the end user. Objects may be static and placed at a fixed point in the mix (for example dialog) or dynamic where they are panned across the 3D soundscape (maybe a plane flying overhead). Think of a sporting event where the options could include home or away commentary, crowd sounds, the referee or match official's voice or pitch side microphones at team ball games. At motor racing events, examples could be commentary, drivers voice or pit crew communication.

One of the major challenges for the production side of the industry will be to start OBA production. This means completely rethinking how we perform the final mix because, with OBA, it will be performed at home by the viewer rather than by a mixer in a post-production facility. We have to bear in mind that as soon as post houses mix objects (different language commentaries, for example) into the audio bed, they are gone and are no longer available for delivery to the viewer at home. Therefore, to give viewers personalized audio, you need to change your production workflow and deliver separate 'unmixed' channels so that the final mix can be finished in the home receiver and decoder.

What does this all mean for the broadcaster? A complete re-build of existing facilities and a total re-think about the audio processing equipment required for outside broadcast vehicles? Well, if we get it right, it should entail relatively minimal changes to overall workflow and hardware, but inevitably some additions to production and distribution equipment. In the case of OBA, the metadata appropriate for the final codec needs to be created and added to the audio for insertion into a conventional SDI stream, and the engineer needs to be able to monitor this complex mix (and all the potential downmix variations) to ensure that the distribution chain is fed with all available objects correctly. Loudness levels should also be considered in respect of existing standards and there should be provision for local insertion of content at any point in the chain.

At Jünger Audio we are already preparing for this challenge by developing quality creation and control tools for OBA. Auto Program Feed Mixing and Auto Commentary Mixing for immediate creation of channel based legacy delivery formats are two of the procedures we can offer to make the introduction of OBA production easier. Our technology will enable broadcasters to start OBA formats with confidence and minimal workflow changes, whilst ensuring that end users benefit from the enhanced listening experience with predictable and reliable results.

www.jungeraudio.com

This article is also available to read in the June edition of Broadcast Film & Video.

(JP/LM)
Solidmate Ltd Memory Card Hire London

Top Related Stories
Click here for the latest broadcast news stories.

03/12/2019
Production News : Opportunity For Writers To Work With High-End Dramas
Call the Midwife and Doctor Who are the first series to offer opportunities to writers under an innovative new programme designed to give emerging tal
02/12/2019
Footprints In The Sand Leave No Trace – A Brighter Production Future
Last summer my son was enthralled as the sea washed his footprints away, leaving no trace of his shoreline games. If only we could erase some other en
29/11/2019
TV Nova's Content With New Production Tools
Every broadcaster who wishes to be known for their own image and style is obliged to seek the path of in-house production. To exist merely to regurgit
03/12/2019
Timeline North To Provide Post-Production On BBC Sports Personality Of The Year
Award winning post house, Timeline North, based in MediaCityUK, is providing post-production on BBC Sports Personality of the Year 2019 live show VTs.
05/12/2019
Light Fantastic Production Services Supports CoppaFeel
Light Fantastic Production Services has supported CoppaFeel with a full production package as well as taking on the overall production management mant
11/11/2016
What Is The Future For Immersive Audio?
Peter Poers, Managing Director at Jünger Audio, looks at production efforts versus consumer experience. Introduction Along with the evolution of highe
22/03/2017
Jünger Audio Demos Audio Processors At CABSAT 2017
Jünger Audio will be promoting its Smart Audio concept at this year's CABSAT exhibition in Dubai (Booth 102, Hall 1) by focusing attention on effectiv
14/12/2017
TSL Products Announces New MPA1 Mix SDI Audio Monitor
Broadcast equipment manufacturer, TSL Products, has announced the release of the new MPA1 Mix SDI audio monitor. Part of the MPA (Monitor Plus Audio)
24/01/2019
Krotus Audio Teams Up With Signum Audio
Krotos Audio and loudness plugin manufacturer Signum Audio have teamed up to offer BUTE Loudness Solutions with a 50% OFF sale until 31 January. Aside
17/01/2019
Calrec Audio Sells 40 Brio Audio Consoles In Japan
In 2018, Calrec Audio generated serious momentum in the Japanese broadcasting market with the sale of 40 of its Brio audio consoles to a number of Jap
27/11/2018
BCD Audio Launches Big Sale Of Audio Black Box Interfaces
BCD Audio are rationalising their warehouse and have some stock of earlier products as well as the latest. The earlier units are great bargains at cut
23/11/2018
BCD Audio's Big Audio Black Box Interfaces Sale
BCD Audio are rationalising their warehouse and have some stock of earlier products as well as the latest. These earlier units are great bargains at c
14/11/2018
NUGEN Audio Unveils Audio Management Batch Processor Extension
NUGEN Audio has unveiled its new Audio Management Batch processor extension (AMB) that adds enterprise functionality to its modular software. To be sh
06/02/2018
Iemke Roos Audio Rebrands As Audio-Technica Benelux
Audio-Technica's Netherlands-based distributor, Iemke Roos Audio,has rebranded to 'Audio-Technica Benelux'. While the name changes, all customers will
09/08/2012
Blackmagic Design Announces Major New Software Update
Blackmagic Design has announced a major new software update that adds full-audio mixing capability to its ATEM 1 M/E Production Switcher and ATEM Tele