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Object-based Audio Reproduction and the Audio Scene Description Format

Published online by Cambridge University Press:  25 October 2010

Matthias Geier ,
Jens Ahrens  and
Sascha Spors
Matthias Geier*
Affiliation:
Quality and Usability Lab, Deutsche Telekom Laboratories, Technische Universität Berlin, Ernst-Reuter-Platz 7, 10587 Berlin, Germany
Jens Ahrens*
Affiliation:
Quality and Usability Lab, Deutsche Telekom Laboratories, Technische Universität Berlin, Ernst-Reuter-Platz 7, 10587 Berlin, Germany
Sascha Spors*
Affiliation:
Quality and Usability Lab, Deutsche Telekom Laboratories, Technische Universität Berlin, Ernst-Reuter-Platz 7, 10587 Berlin, Germany
*
E-mail: *Matthias.Geier@telekom.de; **Jens.Ahrens@telekom.de; †Sascha.Spors@telekom.de URL: http://qu.tu-berlin.de
E-mail: *Matthias.Geier@telekom.de; **Jens.Ahrens@telekom.de; †Sascha.Spors@telekom.de URL: http://qu.tu-berlin.de
E-mail: *Matthias.Geier@telekom.de; **Jens.Ahrens@telekom.de; †Sascha.Spors@telekom.de URL: http://qu.tu-berlin.de
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Abstract

The introduction of new techniques for audio reproduction such as HRTF-based technology, wave field synthesis and higher-order Ambisonics is accompanied by a paradigm shift from channel-based to object-based transmission and storage of spatial audio. Not only is the separate coding of source signal and source location more efficient considering the number of channels used for reproduction by large loudspeaker arrays, it also opens up new options for a user-controlled interactive sound field design. This article describes the need for a common exchange format for object-based audio scenes, reviews some existing formats with potential to meet some of the requirements and finally introduces a new format called Audio Scene Description Format (ASDF) and presents the SoundScape Renderer, an audio reproduction software which implements a draft version of the ASDF.

Information

Type
Articles
Information
Organised Sound , Volume 15 , Issue 3: Sound ↔ Space: New approaches to multichannel music and audio , December 2010 , pp. 219 - 227
Copyright
Copyright © Cambridge University Press 2010

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