xunhuan

matlab code for STFT

　　　综合运用数字信号处理的理论知识进行生物医学信号分析与处理，实现ECG信号的频谱分析，基线漂移检测等，设计滤波器实现心电信号的滤波，滤去高频和低频干扰，加深理解信号预处理的原理、方法和步骤。本设计的主要内容是设计一个ECG信号频谱分析与处理系统，实现ECG信号的增强，得到相对纯净的ECG信号。(Integrated use of theoretical knowledge of digital signal processing in biomedical signal analysis and processing, implementation of ECG signal spectrum analysis, the baseline drift detection, design of filter realizes the ECG signal filtering, filter the high frequency and low frequency interference, deepen understanding, the principle of the signal preprocessing methods and steps. The main content of this design is to design a ECG signal spectrum analysis and processing system, realizes the ECG signal enhancement, get relatively pure ECG signal. )

将示波器CSV文件在MATLAB中画成图形,并进行FFT(input the .csv file of scope into matlab)

用于时间序列ARMA模型定阶程序,效果还可以，供大家参考！(a program for Time Series ARMA model order determination)

用窗函数法设计FIR带通滤波器。指标：低端通带截止频率wlp=0.35π 低端阻带截止频率wls=0.2π。高端通带截止频率whp=0.65π 高端阻带截止频率whs=0.8π。 (Design of FIR with window function bandpass filter target: low-pass with cutoff frequency wlp = 0.35π low stopband cutoff frequency wls = 0.2π passband cutoff frequency of high-end whp = 0.65π high stopband cut-off frequency whs = 0.8π)

邻域是沿着梯度方向的，模糊均值聚类方法。(Neighborhood along the gradient direction, the fuzzy-means clustering method.)

用matlab语言对mimo信道进行的仿真(using Matlab language mimo channels for the simulation)

In this code we use the technique of keyword spotting to search in the spoken document

matlab课程编程【谷速软件】自适应中值滤波 (matlab programming courses [Valley] speed adaptive median filtering software)

初始值问题的数值求解。利用MATLAB编写RK4计算程序，计算结果准确。可为研究工作提供帮助。(The numerical solution of the initial value problem.)