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说明：  这是学习matlab的经典课件的第二部分，第六到九章，包含微分方程求解、代数方程与最优化问题求解、概率论与数理统计问题求解、数学问题的非传统解法等等 (This is a classic learning courseware matlab second part of the sixth to nine chapters, including the differential equation solving, algebraic equations and optimization problem solving, probability theory and mathematical statistics, problem solving, mathematical problems of non-traditional method, etc.)

bebob_focusrite.c - a part of driver for BeBoB based devices.

说明：  基于SPWM调制的两电平三相逆变器，可实现直流电变交流电(Two-level three-phase inverter based on SPWM modulation algorithm,DC to AC.)

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基于单点声源的最优统计算法仿真模拟确定声压幅值。(Based on the single point sound source statistical optimal algorithm simulation to determine the pressure magnitude.)

本例中通过使用MATLAB把声音信号进行分析，把有声音的部分进行过滤，分别过滤后 再把3个信号连在一起，使3个单独的声音信号转换为一个单独的连续声音信号。(In this case through the use of MATLAB to analyze acoustic signals, the voice has some filtering, respectively, after filtering the three signals together, so that three separate voice signal is converted to a single continuous sound signal.)

对单级倒立摆系统的平衡控制问题进行了研究.。首先建立了系统的数学模型 ,然后采用 PID 方法设计控制器 ,最后对控制系统进行了仿真实验研究. 仿真实验结果不仅证明了PID方案对系统平衡控制的有效性，同时也展示了它们的控制品质和特性.。(The balance control of a single inverted pendulum system was focused. First , the mathematical model of the system was built , then the PID method was adopted respectively to design the controllers, at last , the simulation experiments were finished, by the simulation experiment results, not only the validity of the three methods were confirmed , but their qualities and characteristics were shown fully also.)

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本程序实现利用自适应滤波器进行系统辨识,效果良好。(This program implements an adaptive filter system identification, to good effect.)

其实popupwindow用起来比Dialog 方便，因为dialog一切都需要你自己来实现，而popupwindow帮我们实现了很多，我认为在使用的时候关键我们要看清参数： popupWindow.showAtLocation(parent, gravity, x, y) parent这个是一个父view试图， gravity 这个默认是居中，我们要指定显示方式：Gravity.LEFT | Gravity.TOP 最后两个参数就是显示的坐标位置，这样就可以根据需求自己定位显示位置了