为一个Delphi下的数学包,包含小波分析,傅立叶变换等源码及事例.-Delphi for a math packet, including wavelet analysis, such as Fourier transform source code and examples.

（Discrete Cosine Transform，简称DCT变换）是一种与傅立叶变换紧密相关的数学运算。在傅立叶级数展开式中，如果被展开的函数是实偶函数，那么其傅立叶级数中只包含余弦项，再将其离散化可导出余弦变换，因此称之为离散余弦变换。-(Discrete Cosine Transform, DCT-short) is a Fourier transform is closely related with the math. In the Fourier series expansion,