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project report about DTMF method using goertzel algorithm. Also, it analysis the difference between Goertzel and FFT

用MATLAB仿真DTMF,分为生成和检测两个部分(use MATLAB to simulate the DTMF including generation and detection)

设计一个程序，用后向Euler 法/梯形法求解电路系统的MNA 方程（该方程由stamp 程 序得到），其中线性方程的求解采用GCR 迭代法。(Design a program that uses the backward Euler method/trapezoid method for solving circuit system MNA equation (the equation obtained by the stamp program), in which the linear equations using GCR iteration.)

利用时频分析的方法分析一段语音信号的时频特征，并进行降采样等处理，可直接运行(When the time-frequency analysis method to analyze the frequency of use of a voice signal characteristics, and down-sampling and other treatment, can be directly run)

非线性方程求根 包括二分法、牛顿迭代法的matlab程序。(Root including nonlinear equations dichotomy of Newton iteration of Matlab procedures.)

Everything ROC and Precision-Recall curves.

说明：  强非线性的曲线函数逼近，采用MATLAB径向基神经网络(rbf ann fitness)

混沌保密通信SIMULINK建模模。自己作的很好的东西。 (Chaotic secure communication SIMULINK modeling mold. As a good thing.)

说明：  鲸鱼优化算法（WOA）是一种用于解决优化问题的新优化技术。该算法包括三个算子，用于模拟猎捕鲸鱼的猎物，环绕猎物和泡泡网觅食行为。(Whale Optimization Algorithm (WOA) is a new optimization technique for solving optimization problems. The algorithm includes three operators for simulating whale hunting prey, orbiting prey and bubble net foraging behavior.)

有限自动机的确定化及化简 1、更正了 DFA_simplify2 中的错误 2、增加新旧状态对照表 ds_temp --NFA转DFA -- 输入字符 -- 要求 id 必须从 1 开始连续递增(Finite Automata and the identification of a simplification, correction of the errors DFA_simplify2 2, increase the old and new state CRT ds_temp-- NFA to DFA-- input characters-- must request id Start an incremental)