chengxu

HERMITE插值函数，试算，欢迎下载测试(HERMITE)

有限元轴对称问题，平面应变问题，matlab程序(Finite element axisymmetric plane strain problem, matlab program)

实现物种功能的语音处理：倒谱、时域、频谱、语谱图以及功率谱，并加有详尽的注释。另外还可以保存图像，一倍后来研究！matlab ＧＵＩ编程(Voice processing functions to achieve species: cepstrum, time domain, frequency spectrum, spectrogram and power spectrum, and add detailed comments. It also can save the image, doubled and later research!)

LU分解，基于MATLAB开发，求上三角函数和下三角函数(LU decomposition, based on the MATLAB development, and lower demand on the trigonometric functions trigonometric functions)

结合短时能量和过零率对一段连续发音的wav文件进行端点检测，将单个词组的发音分割出来。(Combination of short-term energy and zero crossing rate of a continuous sound of the wav file detection, the pronunciation of a single phrase differently.)

说明：  本文使用了两种方法优化matlab的程序，缩短了算法的时间。方法1：使用Optimization Toolbox中的并行优化；不需要修改代码。方法2：增加一行代码，即可优化(Improving Optimization Performance with Parallel Computing)

设计一超前校正环节，使得超调量为20 ，调节时间为1s。系统单位斜坡稳态响应误差为10 。并作出校正前后后的系统单位阶跃响应时域曲线加以比较。(Design a lead correction link, so the overshoot is 20 , adjust the time of 1s. Steady-state response of the system unit error of the slope is 10 . Made before and after correction and after the system unit step response curves are compared in time domain.)

最优化计算一书中无约束多维优化问题源代码，已通过测试，可直接运行！(Optimization calculation of a book unconstrained multidimensional optimization problem source code has been tested and can be run directly.)

em算法计算混合高斯模型的参数估计，极大似然，EM算法用于K均值问题的参数估计。MATLAB实现有代码(em algorithm Gaussian mixture model parameter estimation, maximum likelihood parameter estimation for K-means problem EM algorithm. MATLAB implementation code)

说明：  MATLAB程序，用于dsp编程软件仿真，信号的产生，fft变换(MATLABghdsp)