说明：  交叉谱分析： 两序列x(n)和y(n)的交叉谱分析，ol(0:m)频率，tl(0:m)周期，px(0:m)是x(n)的连续功率谱，py(0:m)是y(n)的连续功率谱，pxy(0:m)协谱，qxy(0:m)余谱，rxy(0:m)凝聚谱，cxy(0:m)位相差谱，lxy(0:m)滞后时间长度谱，rxy951(0:m)凝聚谱F-检验的95 置信上限，rxy952(0:m)凝聚谱Goodman-检验的95 置信上限，其中m=[n/2.]。
(Continuous cross spectrum analysis of two one-dimensional series )