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Convention Paper

Hardware/Software Co-Design of Multi-Format Audio Decoder

Authors: Kim, DoHyung; Lee, KangEun; Lee, Shihwa; Ryu, Soojung; Son, ChangYong

AES Convention 124 · Paper 7349 · May 2008

Abstract

This paper presents a hardware/software co-design method for the implementation of multi-format audio decoder with ultra low power, small chip size, and high flexibility which are most critical factors in embedded devices. This approach can provide both flexibility and low power with high performance in such a way that hardware implementation has been focused on the commonly used critical blocks of multiple audio decoders having intensive computations. Hardware blocks are well modularized to allow easy and rapid architecture exploration of several digital audio standards. The proposed system can decode MP3 bitstream using only about 4MHz clock frequency and AAC bitstream using only about 7MHz clock frequency on average at the sampling rate of 48 kHz and the target bitrate of 128kbps/stereo.

Details

Published in
AES Convention 124
AES Convention
124
Paper number
7349
Publication date
May 6, 2008
Session subject
Mobile Phone Audio
Affiliation
Samsung Advanced Institute of Technology (See document for exact affiliation information.)
Type
Convention Paper