hua_fft

The early detection of arrhythmia is very important for the cardiac patients. This is done by analyzing the electrocardiogram (ECG) signals and extracting some features from them. These features can be used in the classification of different types of arrhythmias. In this paper, we present three different algorithms of features extraction: Fourier transform (FFT), Autoregressive modeling (AR), and Principal Component Analysis (PCA). The used classifier will be Artificial Neural Networks (ANN). We observed that the system that depends on the PCA features give the highest accuracy. The proposed techniques deal with the whole 3 second intervals of the training and testing data. We reached the accuracy of 92.7083 compared to 84.4 for the reference that work on a similar data.

Matrix Converter Commutation Strategies With and Without Explicit Input Voltage Sign Measurement

实现通信原理上的PCM（脉冲编码调制）调制与解调等 功能(MATLAB PCM)

这是一个Matlab图形绘制程序，包括了大量MATLAB图形绘制操作，各种基于MATLAB的图形绘制(This is a Matlab graphics rendering process, including a large number of MATLAB graphics rendering operation, all based on MATLAB graphics rendering)

数据预测，采用RBF最近邻算法预测股市趋势(Data to predict RBF nearest neighbor algorithm predict stock market trends)

matlab 实现的 数字滤波器 希望对大家有所帮助(digital filter based on matlab)

字符识别，MATLAB程序的。可以运行。基于神经网络(Character recognition)

arx sysytem with white noise

通过不同方法进行粗糙集属性约简matlab完整程序，便于进行对比(By different methods of rough set attribute reduction matlab a complete program, to facilitate comparison)

该程序能在matlab2009a下运行，运行后能够听到自己的心跳声。注意要带上耳塞并且把音量调到最大(listen to the heart beat)