ITU-R Workshop Topics on the Future of Audio in Broadcasting Movies - - PowerPoint PPT Presentation

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ITU-R Workshop Topics on the Future of Audio in Broadcasting Movies - - PowerPoint PPT Presentation

Oct 31, 2022 406 likes •641 views

ITU-R Workshop Topics on the Future of Audio in Broadcasting Movies and the immersive experience Hubert Henle hubert.henle@online.de 15.7.2015 Overview o Adaption of theatrical immersive sound formats o Options for user interactivity ITU-R

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ITU-R Workshop Topics on the Future of Audio in Broadcasting Movies and the immersive experience

Hubert Henle hubert.henle@online.de 15.7.2015

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ITU-R Workshop “Topics on the Future of Audio in Broadcasting” Hubert Henle 15.7.2015

Overview

  • Adaption of theatrical immersive sound formats
  • Options for user interactivity
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ITU-R Workshop “Topics on the Future of Audio in Broadcasting” Hubert Henle 15.7.2015

Overview

Adaption of theatrical immersive sound formats Options for user interactivity

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ITU-R Workshop “Topics on the Future of Audio in Broadcasting” Hubert Henle 15.7.2015

Audio formats currently in use for feature film soundtracks

  • Channel based
  • 5.1 (L-C-R-Ls-Rs-SW)
  • 7.1 (L-C-R-Ls-Bsl-Bsr-Rs-SW)
  • 11.1 Auro 3D (5.1 + 5 Height + 1 Overhead)
  • Formats supporting audio objects
  • Dolby Atmos (9.1 + 118 objects, 64 speaker positions)

Immersive Non-Immersive

Adaption of theatrical immersive sound formats

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Adaption of theatrical immersive sound formats

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Adaption of theatrical immersive sound formats

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ITU-R Workshop “Topics on the Future of Audio in Broadcasting” Hubert Henle 15.7.2015

Audio formats currently in use for feature film soundtracks

  • Channel based
  • 5.1 (L-C-R-Ls-Rs-SW)
  • 7.1 (L-C-R-Ls-Bsl-Bsr-Rs-SW)
  • 11.1 Auro 3D (5.1 + 5 Height + 1 Overhead)
  • Formats supporting audio objects
  • Dolby Atmos (9.1 + 118 objects, 64 speaker positions)

Immersive Non-Immersive

Adaption of theatrical immersive sound formats

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ITU-R Workshop “Topics on the Future of Audio in Broadcasting” Hubert Henle 15.7.2015

Challenge: Number of Objects and speakers

  • Dolby Atmos supports 9.1 „bed“ and 118 simultaneous objects

rendered into 64 speaker locations

  • However: Not all objects will actually be dynamic i.e. moving!
  • It is unrealistic to replicate this in a consumer format
  • Bandwidth of transmission and playback renderer
  • Speaker resolution

Adaption of theatrical immersive sound formats

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Adaption of theatrical immersive sound formats

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ITU-R Workshop “Topics on the Future of Audio in Broadcasting” Hubert Henle 15.7.2015

Manage Objects

  • Pre-Rendering into channel format
  • Transform into Higher-Order Ambisonic format
  • Preserve (selected) objects

Adaption of theatrical immersive sound formats

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ITU-R Workshop “Topics on the Future of Audio in Broadcasting” Hubert Henle 15.7.2015

Manage Dynamic Objects: Pre-Rendering

  • 7.1 + 4 channel format
  • Rendering tools for ProTools available
  • Full control on production side
  • No metadata
  • Possibly limited flexibility with speaker placement in the home

Adaption of theatrical immersive sound formats

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ITU-R Workshop “Topics on the Future of Audio in Broadcasting” Hubert Henle 15.7.2015

Manage Dynamic Objects: Higher-Order Ambisonic

Adaption of theatrical immersive sound formats

  • More flexibility with speaker placement
  • Preserves location information
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ITU-R Workshop “Topics on the Future of Audio in Broadcasting” Hubert Henle 15.7.2015

Manage Dynamic Objects: Preserve selected objects

Adaption of theatrical immersive sound formats

  • Conversion of source metadata into MPEG-H format
  • Remaining objects processed as described above
  • Requires artistic decisions by the content creator
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ITU-R Workshop “Topics on the Future of Audio in Broadcasting” Hubert Henle 15.7.2015

Overview

Adaption of theatrical immersive sound formats Options for user interactivity

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Interactivity for movie soundtracks?

Options for user interactivity

  • Rebalance dialogue against music and effects
  • Choice between different language versions

Dialogue must be delivered separately!

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5.1 Workflow in feature film mixing

Options for user interactivity

Effects Music Dialog Dialog Music Effects Dialog Dialog . . . Music Music . . . Effects Effects . . . ProTools and/or Mixing Console

Sound-Elements Pre-Dubs Final Mix

5.1 Dialog 5.1 Music 5.1 Effects ProTools and/or Mixing Console 5.1 M&E

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Interactivity for movie soundtracks

Options for user interactivity

  • 5.1 dialogue and M&E available as standard deliverable from

(almost) all feature film mixes

  • Dialogue can be delivered as an audio object in MPEG-H
  • Bandwidth overhead reasonable
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Rebalance dialogue against M&E

Options for user interactivity

  • Personal preferences
  • Adapt to listening environment
  • Simple GUI to allow rebalancing within reasonable limits (set

by metadata)

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Choice between different language versions

Options for user interactivity

  • Multiple language versions in single transport stream
  • Alternative delivery methods for additional languages
  • Broadcaster’s webpage
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Other benefits

Options for user interactivity

  • DRC
  • Dialogue and M&E can be processed independently
  • Less prone to unwanted side effects
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ITU-R Workshop Topics on the Future of Audio in Broadcasting Movies and the immersive experience

Hubert Henle hubert.henle@online.de 15.7.2015

Thank you!