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Proceedings Paper

A low-power VLSI implementation for variable length decoder in MPEG-1 Layer III
Author(s): Tsung-Han Tsai; Chun-Nan Liu; Wen-Cheng Chen
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Paper Abstract

MPEG Layer III (MP3) audio coding algorithm is a widely used audio coding standard. It involves several complex coding techniques and is therefore difficult to create an efficient architecture design. The variable length decoding (VLD) e.g. Huffman decoding, is an important part of MP3, which needs great amount of search and memory access operations. In this paper a data driven variable length decoding algorithm is presented, which exploits the signal statistics of variable length codes to reduce power and a two-level table lookup method is presented. The decoder was designed based on simplicity and low-cost, low power consumption while retaining the high efficiency requirements. The total power saving is about 67%.

Paper Details

Date Published: 19 April 2004
PDF: 10 pages
Proc. SPIE 5309, Embedded Processors for Multimedia and Communications, (19 April 2004); doi: 10.1117/12.532990
Show Author Affiliations
Tsung-Han Tsai, National Central Univ. (Taiwan)
Chun-Nan Liu, National Central Univ. (Taiwan)
Wen-Cheng Chen, National Central Univ. (Taiwan)

Published in SPIE Proceedings Vol. 5309:
Embedded Processors for Multimedia and Communications
Subramania I. Sudharsanan; Michael Bove; Sethuraman Panchanathan, Editor(s)

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