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Joint optimization of scale factors and Huffman code books for MPEG-4 AAC

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2 Author(s)
Bauer, C. ; Dolby Laboratories, San Francisco, CA, USA ; Vinton, M.

The MPEG-4 AAC audio encoder achieves low bit rates by appropriately choosing the two encoding parameters Huffman code books and scale factors. Existing AAC implementations solve the implied optimization problem using an heuristic two loop search. This paper presents two novel optimization techniques that for the first time find optimal solutions for the AAC optimization problem.

Published in:

Multimedia Signal Processing, 2004 IEEE 6th Workshop on

Date of Conference:

29 Sept.-1 Oct. 2004