In this example, normal random matrix multiplied by a rectangular time varying standard deviation as noise, and rectangular time varying as a base band signal are summed to form an AM signal.

• 本例以常态随机变数矩阵乘以标准差为方波时变代表杂讯，及时变方脉波代表基频讯号，合成基频讯号及杂讯和之调幅讯号。