Solving-Nonlinear-Equations-using-Newton-Raphson

This code is about short time fourier transform.

录制自己的一段语音，时间控制在15秒到30秒左右；利用wavread函数对自己的语音进行采样，记住采样频率。 （1）画出原始语音信号的时域波形，而后以1秒为间隔，求出每秒数据的功率谱。 （2）根据语音信号特点，分别设计FIR及IIR滤波器，分别画出滤波器幅频和相频特性曲线。用设计的滤波器对信号滤波，画出滤波后时域波形。用sound函数回放语音信号。 （3）求出特征频段语音信号随时间变化的曲线（每间隔0.05秒求一次功率谱）。 (Record your own voice for some time (15 seconds to 30 seconds) use wavread function of the voice samples, remember the sampling frequency. (1) Draw the original speech signal in time domain waveform, and then to 1 second intervals, the data obtained power spectrum per second. (2) According to the voice signal characteristics, FIR and IIR filters were designed, namely to draw the amplitude and phase frequency characteristic curve. With the design of the filters on the signal filtering, to draw the filtered time-domain waveform. Playback with sound function of the speech signal. (3) Find the characteristic band speech signal curve over time (0.05 seconds intervals seeking a power spectrum.))

matlab impletion of floyd algorith(Matlab impletion of floyd algorith)

各种灰色T型关联度代码，修正的T型关联度，改进的T型关联度,邓氏关联度，绝对关联度，相对关联度等。非常方便！(Various gray T-correlation code, modified T-correlation, improved T-correlation, Tangs correlation, absolute degree, associate degree relative. Very convenient!)

程序的主要功能是仿真通过仿真三维物体运动模型，说明卡尔曼滤波在测量精度中的应用。(The main function of the program is three-dimensional simulation of the movement of objects through the simulation model, indicating that the measurement accuracy of the Kalman filter application.)

DWT transformation is used to describe the image compression

It enables users to input a time-series of 2-D velocity field data (e.g., DPIV measurements or CFD calculations) and compute the corresponding finite-time Lyapunov exponent (FTLE) fields, which Lagrangian Coherent Structures (LCS) suchas vortices and fluid transport barriers can be identified.

modulationshaped成型滤波的设计

说明：  计算当有光打在Rh800上时，分子的各能级粒子数随时间的变化(calculate the change of the occupation distribution of Rh800 while there is a pump)

matlab 实现啁啾光栅的反射谱计算 没有切趾函数 普通的线性啁啾反射谱(matlab calcuated the refrective spectrum of linear chirped grating .)