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Welch法：Welch法对Bartlett法进行了两方面的修正：一是选择适当的窗函数w(n)，并在周期图计算前直接加进去，加窗的优点是无论什么样的窗函数均可使谱估计非负。二是在分段时,可使各段之间有重叠，这样会使方差减小。(Welch method: Welch method of Bartlett method amendments in two respects: First, select the appropriate window function w (n), and in the cycle before CALPHAD directly incorporated, plus the advantage of the window, no matter what kind of window function can be so spectral estimation of non-negative. Second, when in subparagraph can overlap between paragraphs, this would reduce the variance.)

实现FFT频谱分析，IIR数字滤波器的设计（多种方法），FIR数字滤波器的设计(Implement FFT spectrum analysis, IIR digital filter design (many ways), FIR digital filter design)

说明：  With FR conjugate gradient method for solving unconstrained problem

说明：  语音的语谱图绘制，MATLAB实现，可调参数(Speech Spectrogram rendering, MATLAB implementation of adjustable parameters)

很多代数方程组的解法，需要用matlab做算法的童鞋可以考虑下载(Solution of many algebraic equations, need to do the algorithm matlab download children s shoes can be considered)

设计一个简单的GUI界面，对导入的音频文件进行时域特性分析。计算其时域波形、平均幅度、短时能量、短时过零率。对该音频文件进行加噪处理，分析其时域波形变化。设定一个固定时长，对该音频添加回声并保存为“*.wav”格式文件。 对音频文件的时域分析是对音频文件进行传输、降噪及其他再编辑的基础。其中短时能量可用作清浊音区分的标准和语音起始点的判断。短时过零率可用作判断有声段与无声段和从背景噪声中提取语音信号。 (Design a simple GUI interface that time domain characteristics analysis on import audio files.Calculate the average time domain waveform, amplitude, short-time energy and short-time zero crossing ratio.Add to deal with the noise of the audio files, analyze the changes in the time domain waveform.To set a fixed time, to add the audio echo and saved as a *. Wav format file. The time domain analysis of the audio file was transmitted to audio files, noise reduction and other editor again.The short-time energy voiced distinguish between standard and can be used as a clear voice starting point judgement.Short-time zero crossing ratio can be used as a judgment audio segment and silent segment and extract speech signal background noise.)

说明：  随机森林的一个入门级历程，此例程可以带有稀缺数据集，让你使用训练集和测试集感受到随机森林的强大之处。随机森林的分类与回归，非常之强。秒杀神经网络，是一个人见人爱的算法。(Random forest is an entry-level process, this routine can have scarce data set, let you use training set and test set to feel the power of random forest. The classification and regression of random forest is very strong. Seckill neural network is a love algorithm.)

最全的MATLAB工具箱免费下载——matlabsky Gerald Recktenwald 《Numerical Methods with MATLAB》(NMM1.5数值分析工具箱) (Most of the MATLAB toolbox free download- matlabsky Gerald Recktenwald " Numerical Methods with MATLAB" (NMM1.5 numerical analysis toolbox))

灰色预测模型的matlab程序，用于对时间序列做预测。(Gray prediction model matlab procedure done for time series prediction.)

This code is used for trajectoru tracking using EKF.