Proceedings of the Korean Society of Broadcast Engineers Conference (한국방송∙미디어공학회:학술대회논문집)

The Korean Institute of Broadcast and Media Engineers (한국방송∙미디어공학회)
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An Enhancement of the MPEG-2 Audio Encoder Using General DSPs

범용 DSP를 이용한 MPEG-2 오디오 부호화기의 성능 개선

  • 오현오 (연세대학교 전자공학과 음향, 음성 및 신호처리 연구실) ;
  • 김성윤 (연세대학교 전자공학과 음향, 음성 및 신호처리 연구실) ;
  • 윤대희 (연세대학교 전자공학과 음향, 음성 및 신호처리 연구실) ;
  • 차일환 (연세대학교 전자공학과 음향, 음성 및 신호처리 연구실) ;
  • 이준용 (KBS 기술 연구소)
  • Published : 1997.11.01
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Abstract

The ISO(International Standard Organization) has standardized MPEG-2 audio. The MPEG-2 audio compression algorithm is based upon subband analysis and exploits the human auditory characteristics to achieve a low bit rate with minimum perceptual loss of audio signal quality. This thesis presents an enhanced MPEG-2 audio encoder using multiple TMS320C30 general purpose DSP's. The developed system is made up of five slave boards and one master board. Each slave board performs susband analysis psychoacoustic parameter calculation for one channel, and the master board manages bit allocation, quantization, and bit-stream formatting for all channels. Parallel processing and pipelining techniques are used in hardware structure and fast algorithms are applied in each subroutine to implement a real-time process. The implemented system supports multichannel up to 5.1 and various bitrates.

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