最大似然（ML）准则和最大后验概率（MAP）准则，实现了对10个数字音的识别程序使用混沌与分形分析的例程，基于SVPWM的三电平逆变的matlab仿真，Matlab实现界面友好，预报误差法参数辨识-松弛的思想。- Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, Realization of 10 digital audio recognition program Use Chaos and fractal analysis routines, Based on SVPWM three-level inverter matlab simulation, Matlab to achieve user-friendly, Prediction Error Method for Parameter Identification- the idea of relaxation.