ScaleandImageDescription

用自相关函数的方法获得语音信号的基频，来识别男女(Baseband, using the autocorrelation function method to obtain a voice signal to identify sexes)

用matlab编程实现的清华老校歌。属于信号与系统处理技术的问题。(Matlab programming of Tsinghua old school song. Belong to the problem of signal processing technology.)

对图像提取相应的特征点，并对特征点进行精简与描述，找到128维的描述子，并与另一幅图像的描述子进行比较，得到图像的匹配(Extract the corresponding feature point of the image, and the feature point streamline with the description, to find 128-dimensional descriptor, and compares with a description of the image sub-image matching)

DES function for the encryption of DES,use matlab to make it possible,first input in the function is plaintext ,second one is key,and last is to choose encrypt or decrypt

1.理解显式差分格式的依赖区域。写出所给微分方程的依赖区域。 2.会求显式差分格式的截断误差。 3.能写出显式差分格式的CFL条件，显式差分格式的稳定性条件，写出显式差分格式的收敛性条件。 (Understanding the explicit difference scheme dependent region. Write to differential equations dependent region. 2 will seek explicit difference scheme truncation error. Explicit Difference Scheme CFL conditions, the stability condition of the explicit difference scheme able to write, write explicit difference scheme convergence conditions.)

基于卡尔曼滤波的机动目标跟踪VD算法，变维滤波的原理和性能(Based on Kalman Filter VD maneuvering target tracking algorithm, variable dimension filtering principle and performance)

基于simulink的变压器匝间短路仿真(Based on the short-circuit emulation between the transformer turns simulink)

数字低通滤波器到数字带通滤波器 MATLAB编码设计(Digital low-pass filter to the digital band-pass filter design MATLAB coding)

说明：  永磁同步电机三环矢量控制，有速度环等，经测试正确(Permanent magnet synchronous motor vector control of three-ring, ring, such as speed, were the correct)

说明：  matlab读取txt文件，并进行福利叶变换，EMG信号的读取程序(matlab read the txt file, and make welfare Fourier transform, EMG signals of the read process)