中文说明：这个.rar包括卷积函数，接收三个参数：独立变量，对应于一个周期的信号，和两个信号的卷积（与同期）。此函数计算两个信号和情节的卷积结果，还是在过程中的不同步骤。
English Description：
This .rar includes the convolution function, that receives three parameters: the independent variable, corresponding to one peiod of the signals, and the two signals to convolve (both with the same period). This function calculates the convolution of the two signals and plots the the result, as wll as the different steps of the process. The .rar also includes a second file with two examples of the application of the function, one that convolves a sine signal with a cosine signal and the other that convolves two rectangular pulse trains. IMPORTANT: The function only gives one period of the convolved signal, but the convolution of two periodic signals is also periodic, and with the same period as the others.