DDC

说明：  用割线法求函数极值，能求出初始点附近极值点，包括极大值和极小值(Secant extremal function, can be obtained in the vicinity of the initial point of extreme points, including the maximum and minimum values)

说明：  对故障数据的小波包分解与信号重构、小波包能量特征提取 暨 小波包分解后实现按频率大小分布重新排列，并进行降噪处理。(After wavelet packet decomposition and signal reconstruction, wavelet packet energy feature extraction and wavelet packet decomposition, the fault data can be rearranged according to the frequency distribution, and the noise can be reduced.)

Indicated Airspeed Simulink Model (very easy for learning)

说明：  用于特征降维，特征融合，相关分析等多元数据分析的鉴别型典型相关分析（DCCA）Matlab代码实现。(For feature reduction, feature fusion, multivariate data analysis and correlation analysis based identification of canonical correlation analysis (DCCA) Matlab code implementation.)

使用VarPtr来取得变量的内存地址 使用CopyMemory取得指定地址的内容(Use CopyMemory obtain the content of the specified address)

ECG 信号处理源码 用于处理ECG 信号(ECG signal processing source)

本程序利用K-wave实现了用一维线性阵列探测器采集到的光声信号数据完成2维光声图像重建。(This program implements the use of K-wave one-dimensional linear array detector photoacoustic signals collected data to complete two-dimensional photoacoustic image reconstruction.)

横坐标是时间，纵坐标是频率，matlab绘制时频图的小程序(Time frequency pic)

正弦波，方波，三角波三种波形的FM、PM调制解调(Modulation and Demodulation of Three Waveforms: Sine Wave, Square Wave and Triangular Wave)

维纳滤波程序，给正弦波信号加入信噪比为20dB的高斯白噪声。(Wiener filtering process, to add a signal to the sine wave signal to noise ratio of 20dB Gauss white noise.)