一种结构简单的DCT算法

A Simple Structured Algorithm for the Discrete Cosine Transform

本文通过对DCT-Ⅲ或Ⅳ求和项前半部的对半分解和三角恒等变换,得到一种新的结构简单的DCf算法.这各算法具有与森川等人算法和王中德算法类似的结构和同样的计算效率,但具有更小的计算误差。

In this paper, we develop a new algorithm of the discrete cosine transtorm of length N=2 basedthe reduced-half decomposition of trigonometric -function-sum level by level. The proposed algorithm is withless amount of calculation, higher efficiency, simpler structure and smaller computing errors.