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Portability of a 3D audio object production: From the studio to the dome

: Frutos-Bonilla, J.; Rodigast, R.

Verband Deutscher Tonmeister -VDT-:
Expertise in audio media. 28. Tonmeistertagung, TMT 2014. CD-ROM : 20.11. - 23.11.2014, Cologne
Bergisch-Gladbach: Verlag VDT, 2014
ISBN: 978-3-9812830-5-1
Paper OB-3
Tonmeistertagung (TMT) <28, 2014, Cologne>
Conference Paper
Fraunhofer IDMT ()

Object-based audio systems have been getting more attention in the recent years. The object-based approach redefines the audio production and reproduction chain. Instead of optimizing the individual signals for every loudspeaker of a specific audio system (channel based approach), the object-based production delivers a scene description that contains a set of sound source signals along with some metadata. This scene description is processed in the renderer together with a set of input parameters, which are related to the local installation, to create the corresponding optimized output signal for each loudspeaker. As a result, any object-based production can be adapted to any listening room by just modifying an input parameter. This paper describes the scene adaption process (upscaling) carried out in two different rooms from a technical and artistic point of view. The research starts with an object-based production mixed in a studio with 20 loudspeakers that are distributed into 3 layers. Then, the same scene is adapted and reproduced in a dome setup with 48 loudspeakers arranged into 5 layers. Finally, both scenarios are compared in terms of spatial impression, localization accuracy of movements in vertical and horizontal planes, sweet spot dimension, and overall audio quality.