本程序对渐变鸟鸣信号与脉冲信号进行卷积，将卷积后的傅里叶变换与这两个函数傅里叶变换后的乘积进行比较。(This procedure convolution of the gradual variation of bird signals and pulse signals, the convolution of the Fu Liye transform and the two functions, Fu Liye transform after the comparison of the product.)