摘要
本文从分析AR谱谱值计算公式入手,推导出了一种局部频段内AR谱谱值的快速算法,由递推式计算正弦和余弦值,与直接按公式计算相比,其计算效率提高了近五倍。
Based on the formula of AR spectrum, one fast algorithm for AR spectrum of optional frequency band was derived. To decrease cost of computation, values of sine and cosine were figured out by a recurrence formula. For this reason, the algorithm was five times faster then the direct method.
关键词
AR谱
递推算法
直接法
任选频段
AR spectrum
recurrence algorithm
direct method
optional frequency band
