DSP2407 realize the discrete cosine transform and inverse transform, built

代码说明：

DSP2407实现的离散余弦变换和逆变换,5个通道内置定时AD采集,在语音和图象处理方面广泛使用,算法成熟,有助于在运用中理论学习-DSP2407 realize the discrete cosine transform and inverse transform, built-in 5-channel AD acquisition from time to time, in the voice and image processing aspects of the wide use of sophisticated algorithms to help in the use of theoretical study