基于泰勒展式的量化与反量化硬件设计  

Design of Quantization and Inverse Quantization Hardware Based on Taylor Series

作　　者：向洵[1] 陈世钗[2] 刘凡[3] 

机构地区：[1]重庆科技学院数理系,重庆401331 [2]中国电子科技集团公司第二十六研究所,重庆400060 [3]中国电子科技集团公司第二十四研究所,重庆400060

出　　处：《微电子学》2014年第2期202-205,共4页Microelectronics

基　　金：模拟集成电路重点实验室基金资助项目(9140C090406120C09037)

摘　　要：介绍了一种新的基于泰勒展式的量化与反量化硬件实现方法。该方法可广泛应用于多种音频的编解码系统,如MP3,AAC等。通过优化的方法,不仅能减少量化与反量化中数据存储区的大小,增加系数的准确性,还能减少计算系数时所需的运算量。与已有算法相比,在浮点运算下,新方法的性能得到显著提升。同时,给出了定点运算结果。实际测试结果表明,新方法有效提升了系统性能。该方法的算法还可用于伽玛校正。A novel method for designing quantization and inverse quantization hardware was presented based on Taylor series,which could be applied to audio codec systems,such as MP3,AAC,etc.The optimized method reduced memory size in quantization and inverse quantization and improved accuracy of coefficients with fewer amount of calculations.Compared with existing algorithms,the novel method had a significantly improved performance of floating-point calculation,such as accuracy and calculation complexity.The performance of the fixed-point calculation was also compared.Test results showed that the novel method improved performances of the system effectively.The algorithm in the new method could also be used for gamma correction.

关 键 词：泰勒展式 硬件设计 量化 反量化 

分 类 号：TN722.7[电子电信—电路与系统]