利用循环卷积和线性卷积之间的关系，用FFT和IFFT的现有程序实现信号线性卷积快速实现-cyclic and linear convolution convolution of the relationship between FFT and IFFT with the existing procedures of linear convolution signal Fast

用FFT分别计算Xa(n) (p=8, q=2)与Xb(n) (a =0.1,f =0.0625)的16点循环卷积和线性卷积。