1)编写DFT子函数（计算并画出幅频特性），以后可调用。 2）N=32，M=32，128，256时，分析频率分辨率、频谱的光滑程度。 3）N=64，256，512时，分析频率分辨率和频谱的光滑程度。 -1) the preparation of DFT Functions (calculated and drawn amplitude-frequency characteristics), the future can be called. 2) N = 32, M = 32,128

4.8 Kbps CELP Coder 􀂄 Each frame is divided into 4 subframes. In each subframe, the codebook contains 512 codevectors. 􀂄 The gain is quantized using 5 bits per subframe. 􀂄 The LSP parameters are quantized using 34 bits s

* Zooming and Shrinking Images -(a) Write a computer program capable of zooming and shrinking an image by nearest neighbour and bilinear interpolation. The input to your program is the desired size of the resulting image in the horizontal a