A Novel Inverse Quantization Algorithm Based on Taylor Series for Digital Audio Codecs

被引：0
|
作者：
Liu, Fan [1 ]
Zhu, Junfeng [2 ]
Huang, Xiaozong [1 ]
Xiang, Xun [3 ]
机构：
[1] China Elect Technol Grp Corp, Sichuan Inst Solid State Circuits, Chongqing 400060, Peoples R China
[2] Actions Semicond Co Ltd, Zhuhai 519085, Peoples R China
[3] Chongqing Inst Technol, Dept Math & Phys, Chongqing 401331, Peoples R China
来源：
2013 IEEE 10TH INTERNATIONAL CONFERENCE ON ASIC (ASICON) | 2013年
关键词：
quantization; inverse quantization; fixed-point calculation; SNR;
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
We propose a novel algorithm for inverse quantization in some audio codec systems, such as MP3, AAC, etc. The optimized algorithm not only reduces the memory size and increases the accuracy of coefficients, but also simplifies the calculations. Compared with other reported algorithms based on float-point calculation, the novel method significantly improved both the accuracy and calculation complexity. We also show that the performance of the system is improved tremendously when the new algorithm is implemented under fixed-point calculation.
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页数：3
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