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A modified MPEG-2 audio decoding scheme based on its low-cost fast algorithm and efficient data scheduling

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4 Author(s)
Tsung-Han Tsai ; Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Liang-Gee Chen ; Hao-Chieh Chang ; Sheng-Chieh Huang

Degrouping is the key component in MPEG Layer II audio decoding. It mainly contains the arithmetic operations of division and modulo, which requires a great deal of hardware and computation time. In this paper, we propose a novel degrouping algorithm with a low complexity design concept. By using mode selection and iterative decomposition, only the addition and subtraction are needed. The elimination of the multiplier, divider and ROM table can therefore save a lot of chip area, but still retains the high efficiency without loss of any accuracy

Published in:

Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on  (Volume:5 )

Date of Conference:

31 May-3 Jun 1998