计算反射系数的位内递推算法  

An In-Place Algorithm for Recursively Computing Reflection Coefficients

作　　者：陈锡先[1] 蔡长年[1] 

机构地区：[1]北京邮电学院

出　　处：《通信学报》1990年第3期69-71,43,共4页Journal on Communications

摘　　要：本文提出一种计算反射系数的高效公式——位内递推算法。新算法在线性预测分析的PARCOR基础上,利用滤波器内积的概念引入两个中间变量,使递推运算能够在位内进行。位内算法不仅节省了存储空间,更重要的是它减少了传送数据的操作,因此提高了运算效率。This paper presents a new formulation for recursively computing the reflection (Partial Correlation) coefficients of speech signal. The proposed algorithm is based on the well-known PARCOR formulation of linear prediction and produces an in-place recursion by introducing two new intermediate variables defined by the concept of inner product. The most distinct feature of the in-place deduction is that temporary or scrach-pad registers are not needed for inlermediate results, for the same set of input registers is used as output registers for holding the recursion results Therefore, it not only requires small memory size, but also reduces the computation efforts by getting rid of data transfer operation.

关 键 词：反射系数 位内 递推算法 语声编码 

分 类 号：TN912.3[电子电信—通信与信息系统]