Technical Program

Paper Detail

Paper:	ITT-P3.2
Session:	Multimedia, Automotive, Printing and Networking Applications
Time:	Friday, May 19, 16:30 - 18:30
Presentation:	Poster
Topic:	Industry Technology Track: Standards and Format Conversions
Title:	AUDIO TRANSCODING ALGORITHM FOR MOBILE MULTIMEDIA APPLICATION
Authors:	Kyoung Ho Bang, Young-Cheol Park, Dae Hee Youn, Yonsei University, Republic of Korea
Abstract:	In this paper, we propose an audio transcoding algorithm for mobile multimedia applications. The algorithm is to provide high quality transcoded audio stream from a multimedia broadcasting media server system to mobile terminals. As a representative case, audio transcoder between T-DTV and T-DMB service is considered. While the Korean DTV audio standard adopted the Dolby AC-3, the Korean T-DMB service uses the MPEG-4 BSAC. The proposed algorithm reuses the bit allocation information of the AC-3 decoder in the process of BSAC encoding and simplifies the bit-allocation process with two independent loops instead of nested ones. We verified that our architecture could take the place of the nested loop with a significant simplification and no PAM. The proposed audio transcoding algorithm is suitable for the mobile multimedia applications due to its low complexity and minimum frame-by-frame complexity variations.