劲舞团ACV源码，已经修改过的支持3.4以上解码,Dance Mission ACV source has been modified to support more than 3.4 decoding

已经能解劲舞团6.0版本的ACV了! -Solution has been able to Audition 6.0 version of the ACV of the!

autocov computes the autocovariance between two column vectors X and Y with same length N using the Fast Fourier Transform algorithm from 0 to N-2. The resulting autocovariance column vector acv is given by the formula: acv(p,1) = 1/(N-p) *