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A 3D Audio Broadcasting Terminal for Interactive Broadcasting Services  

Park Gi Yoon (Broadcasting media research group at ETRI)
Lee Taejin (Broadcasting media research group at ETRI)
Kang Kyeongok (Broadcasting media research group at ETRI)
Hong Jinwoo (Broadcasting media research group at ETRI)
Publication Information
Journal of Broadcast Engineering / v.10, no.1, 2005 , pp. 22-30 More about this Journal
Abstract
We implement an interactive 3D audio broadcasting terminal which synthesizes an audio scene according to the request of a user. Audio scene structure is described by the MPEG-4 AudioBIFS specifications. The user updates scene attributes and the terminal synthesizes the corresponding sound images in the 3D space. The terminal supports the MPEG-4 Audio top nodes and some visual nodes. Instead of using sensor nodes and route elements, we predefine node type-specific user interfaces to support BIFS commands for field replacement. We employ sound spatialization, directivity/shape modeling, and reverberation effects for 3D audio rendering and realistic feedback to user inputs. We also introduce a virtual concert program as an application scenario of the interactive broadcasting terminal.
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