New Non-linear Inverse Quantization Algorithm and Hardware Architecture for Digital Audio Codecs 


Vol. 33,  No. 1, pp. 12-18, Jan.  2008


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  Abstract

This paper This paper proposes a new inverse-quantization (IQ) table interpolation algorithm, specialized Digital Signal Processor (DSP) instructions and hardware architecture for digital audio codecs. Non-linear inverse quantization algorithm is representatively used in both MPEG-1 Layer-3 and MPEG-2/4 Advanced Audio Coding (AAC). The proposed instructions are optimized for the non-linear inverse quantization. The proposed algorithm can minimize operational complexity which reduces total computational load. Performance comparisons show a significant improvement of average error. The proposed instructions and hardware architecture can reduce 20% of the instruction counts and minimize computational loads of IQ algorithms effectively compared with existing IQ table interpolation algorithms. Proposed algorithm can implement commercial DSPs.

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  Cite this article

[IEEE Style]

J. H. Moon, J. H. Baek, M. H. Sunwoo, "New Non-linear Inverse Quantization Algorithm and Hardware Architecture for Digital Audio Codecs," The Journal of Korean Institute of Communications and Information Sciences, vol. 33, no. 1, pp. 12-18, 2008. DOI: .

[ACM Style]

Jong Ha Moon, Jae Hyun Baek, and Myung Hoon Sunwoo. 2008. New Non-linear Inverse Quantization Algorithm and Hardware Architecture for Digital Audio Codecs. The Journal of Korean Institute of Communications and Information Sciences, 33, 1, (2008), 12-18. DOI: .

[KICS Style]

Jong Ha Moon, Jae Hyun Baek, Myung Hoon Sunwoo, "New Non-linear Inverse Quantization Algorithm and Hardware Architecture for Digital Audio Codecs," The Journal of Korean Institute of Communications and Information Sciences, vol. 33, no. 1, pp. 12-18, 1. 2008.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880