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Optimization of MPEG-4 AAC Codec on PDA  

김동현 (인하대학교 정보통신공학과)
김도형 (인하대학교 전자공학과)
정재호 (인하대학교 전자공학과)
Publication Information
The Journal of the Acoustical Society of Korea / v.21, no.3, 2002 , pp. 237-244 More about this Journal
Abstract
In this paper we mention the optimization of MPEG-4 VM (Moving Picture Expert Group-4 Verification Model) GA (General Audio) AAC (Advanced Audio Coding) encoder and the design of the decoder for PDA (Personal Digital Assistant) using MPEG-4 VM source. We profiled the VMC source and several optimization methods have applied to those selected functions from the profiling. Intel Pentium III 600 MHz PC, which uses windows 98 as OS, takes about 20 times of encoding time compared to input sample running time, with additional options, and about 10 times without any option. Decoding time on PDA was over 35 seconds for the 17 seconds input sample. After optimization, the encoding time has reduced to 50% and the real time decoding has achieved on PDA.
Keywords
MPEG-4; AAC;
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