离散函数matlab基本用法卷积与循环卷积描述及连续信号幅度谱包络-Discrete convolution function matlab basic usage and circular convolution descr iption and continuous signal amplitude spectral envelope

连续函数matlab基本用法及各种简单形式描述-Continuous function matlab basic usage and various simple form descr iption

For a function that varying with time s(t) be a continuous function to be sampled, and sampling be performed by measuring the value of continuous function every T seconds, which is called sampling interval. This sampled function is given by S(nT),for