As digital broadcasting technologies have been advanced, user’s expectations for a realistic and interactive broadcasting service also have been increased. In this paper, we present an object-based 3D audio broadcasting system. This system consists of an authoring tool, a streaming server, and a client. The authoring tool generates an MPEG-4 file, made of multiple audio objects, after adapting several kinds of acoustical effects to the audio objects. The streaming server generates transmission packets, and sends them to the client through the Internet. The client reconstructs the bitstream, and plays the 3D audio with a user interaction. In this paper, we will present the design and implementation method of an object-based 3D audio system and describe the simulation result and applications.
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