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Complexity scalability design in global pulse replacement algorithm for ACELP speech codecs

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3 Author(s)
Fu-Kun Chen ; Department of Computer Science and Information Engineering, Southern Taiwan University, Taiwan ; Bo-Kai Su ; Yue-Dar Jou

The algebraic code excited linear prediction (ACELP) algorithm, due to low complexity and high quality in its analysis-by-synthesis (AbS) optimization, has been adopted by many speech coding standards. In this paper, the scalability of computational complexity to the global pulse replacement search method for ACELP is proposed. In addition, the proposed method can achieve the lowest computational complexity with perceptually negligible degradation. Based on the standard subjective and objective quality measurements, the experimental results reflect the facts.

Published in:

2009 16th International Conference on Digital Signal Processing

Date of Conference:

5-7 July 2009