nspca.tar

这个程序是用来显示经过经验模态分解后所得的各个固有模态函数和残余信号，以及由它们重建的信号。(This procedure is used to show through after EMD from various intrinsic mode function and the residual signal, as well as the reconstruction of the signal from them.)

this code is for EMD decomposition

First use EEMD to decompose the original singal to get IMFS,then use FFT to analyse the each IMF,combine EEMD with FFT to get clearer analytic results.

音频信号降采样程序 支持48k->8k 24k->8k 8k->1k 的降采样.实现方法,先做低通滤波,再做采样点抽取.低通滤波起使用67点FIR,系数由matlab使用窗函数法生成 (Audio signal down-sampling procedures to support the 48k-)

TOpological 图象分割 程序 Matlab 源代码(Topological_derivative_Segmentation 图象分割 程序 Matlab 源代码)

这是关于信号处理方面的知识，对matlab的卡尔曼滤波十分重要(This is knowledge about signal processing and it is very importance of kalman filter for matlab )

ofdm在瑞利信道的仿真程序还有snr，ber图形(ofdm simulation program in Rayleigh channel also snr, ber graphics)

multivariating gaussian density

提取mfcc特征，与htk结果一样，并且可以直接用在htk中训练。(extracting mfcc，is the same as htk, and can be training in the htk)

说明：  主要是对数据做初级滤波和组合分析，其实就是对多路数据做了采集并组合做图(Primary filtering and combination analysis of data)