Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A study on the Perceptual Model for MPEG II AAC Encoder

MPEG-II AAC Encoder의 perceptual Model에 관한 연구

  • 구대성 (조선대학교 전자정보통신공학부, 멀티미디어 ASIC설계 실험실) ;
  • 김정태 (조선대학교 전자정보통신공학부, 멀티미디어 ASIC설계 실험실) ;
  • 이강현 (조선대학교 전자정보통신공학부, 멀티미디어 ASIC설계 실험실)
  • Published : 2000.06.01
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Abstract

Currently, the most important technology is the compression methods in the multimedia society. Audio files are rapidly propagated through internet. MP-3 is offered to CD tone quality in 128Kbps, but 64Kbps below tone quality is abruptly down and high bitrate. on the other hand, MPEG-II AAC (Advanced Audio Coding) is not compatible with MPEG-I, but AAC has a high compression ratio 1.4 better than MP-3. Especially, AAC has max. 7.1 channel and 96KHz sampling rate. In this paper, the perceptual model is dealt with 44.1KHz sampling rate for SMR(Signal to Masking Ratio)

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