arc sine transformation

Just as its name implies,A-not-A conversion is the conversion of positive and negative thinking direction.

正反转换法顾名思义就是肯定与否定的思维方向的互换[1](p44)。

Efficient recursive algorithm for the inverse modified discrete cosine transform(IMDCT);

一种有效的修正离散余弦反变换递归算法