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用matlab编辑音乐，模拟萧的声音演奏天空之城(Use matlab to edit music)

根据毕奥-萨伐尔定律推导了运动电荷产生的磁感应强度的公式，用曲面显示运动电荷产生的磁感应强度的分布规律。 通电线段的磁感应强度公式 磁感应线的半径形成等比数列，精确显示了二维磁感应线(Derivation based on the Biot- Savart law of magnetic induction generated by the moving charge formula, the distribution of magnetic induction surface display generated by the moving charge.)

LDPC码理论方面的高性能密度进化仿真测试例程，可以跑出数值结果(LDPC DENSITY EVOLUTION)

用s函数编写光伏最大功率追踪，采用变步长电导增量法，能够实现最大功率跟踪(S function written in photovoltaic maximum power tracking, using variable step incremental conductance method to achieve maximum power point tracking)

Matlab surface interface~(Matlab surface interface ~)

用于现代信号分析与处理课程，正交变换、K-L变换与离散余弦变换。(For modern signal analysis and processing programs, orthogonal transform, KL transform and discrete cosine transform.)

用梯形求积法、自适应Simpson求积（低阶）法和自适应Lobatto求积（高阶）法进行数值积分(With trapezoidal quadrature method, adaptive Simpson quadrature (low) and adaptive Lobatto quadrature (high-order) numerical integration method)

说明：  m-qam调制解调系统仿真，包含调制解调的所有步骤(m-qam modulation and demodulation system simulation, including all steps of modulation and demodulation)

卡尔曼滤波的matlab程序 按照基本卡尔曼滤波算法编写(Kalman filter matlab program prepared in accordance with the basic Kalman filter algorithml)

In this document has been introduced how to solve different partial differential equations in Matlab programming language.Everbody can solve Heat Conduction Equation, Helmholtz Equation, Laplace Equation and Wave Equation for different initial and boundary conditions. This document is elemantary of to understand how to solve partial differential equations with the aid of a porgramming language.