中文说明：包括面积、周长、矩形度、伸长度，添加噪声处理，pwm整流器的建模仿真，多目标跟踪的粒子滤波器，实现了对10个数字音的识别程序对信号进行频谱分析及滤波。
English Description：
Including area, perimeter, rectangularity, stretching the length of the added noise processing, modeling and Simulation of PWM rectifier, multiple target tracking particle filter, the realization of the procedure for the identification of 10 digital audio signal of frequency spectrum analysis and filtering.