An Audio-Visual System for Object-Based Audio: From Recording to Listening

Philip Coleman, Andreas Franck, Jon Francombe, Qingju Liu, Teofilo De Campos, Richard J. Hughes, Dylan Menzies, Marcos F.Simon Galvez, Yan Tang, James Woodcock, Philip J.B. Jackson, Frank Melchior, Chris Pike, Filippo Maria Fazi, Trevor J. Cox, Adrian Hilton

Research output: Contribution to journalArticlepeer-review


Object-based audio is an emerging representation for audio content, where content is represented in a reproduction-format-agnostic way and, thus, produced once for consumption on many different kinds of devices. This affords new opportunities for immersive, personalized, and interactive listening experiences. This paper introduces an end-to-end object-based spatial audio pipeline, from sound recording to listening. A high-level system architecture is proposed, which includes novel audio-visual interfaces to support object-based capture and listener-tracked rendering, and incorporates a proposed component for objectification, that is, recording content directly into an object-based form. Text-based and extensible metadata enable communication between the system components. An open architecture for object rendering is also proposed. The system's capabilities are evaluated in two parts. First, listener-tracked reproduction of metadata automatically estimated from two moving talkers is evaluated using an objective binaural localization model. Second, object-based scene capture with audio extracted using blind source separation (to remix between two talkers) and beamforming (to remix a recording of a jazz group) is evaluated with perceptually motivated objective and subjective experiments. These experiments demonstrate that the novel components of the system add capabilities beyond the state of the art. Finally, we discuss challenges and future perspectives for object-based audio workflows.

Original languageEnglish (US)
Pages (from-to)1919-1931
Number of pages13
JournalIEEE Transactions on Multimedia
Issue number8
StatePublished - Aug 2018
Externally publishedYes


  • Audio systems
  • audio-visual systems

ASJC Scopus subject areas

  • Signal Processing
  • Media Technology
  • Computer Science Applications
  • Electrical and Electronic Engineering


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