MDCT修正正弦变换 可以用来实现多媒体方向的压缩解压数据-MDCT can compression and decompression data

MDCT快速算法的定点实现和相关算法文档资料，MDCT广泛应用于当前主流的音频编解码算法中。-Express MDCT algorithm implementation and related fixed-point algorithm documentation, MDCT is widely used in the current mainstream audio codec algorithm.