ouralgo

This is another source code for speech recognition.. this is the voice active detection using energy detection

Matlab for engineering GA, Vectorized Functions

QPSK信号通过瑞利衰落信道后的误比特率和误符号率，并与AWGN信道下的误比特率和误符号率进行对比。其中，多普勒频移为 100Hz，经过矩形脉冲成形后的抽样时间间隔为1/800000s。(The QPSK signal harms the bit rate after the Rayleigh fading channel and harms the mark rate, and harms the bit rate with the AWGN channel under and harms the mark rate to carry on the contrast. And, the Doppler shift is 100Hz, after undergoing the square pulse forming the sampling time gap is 1/800000s. )

利用matlab编写的fdtd模拟程序！(Fdtd using matlab simulation program written!)

matlab的音频指纹提取, 小波包, 需要用到voicbox工具箱(matlab audio fingerprint extraction, wavelet packet, need to use voicbox Toolbox)

基于FFT的图像匹配，用傅立叶变换对图像进行匹配！分别对模板和匹配图进行傅立叶变换(image Regsiter use FFT )

差分编码的仿真程序，包含三个文件，给出了仿真性能！(Simulation of differential encoding process consists of three documents, the simulation performance!)

Filtering an image using median filter.

说明：  Matlab电磁波FDTD传输程序 模拟一天线发射电磁波在不同介质中的传播。(The Finite-difference time-domain (FDTD) method belongs in the general class of grid-based differential time-domain numerical modeling methods. The time-dependent Maxwell s equations (in partial differential form) are discretized using central-difference approximations to the space and time partial derivatives. The resulting finite-difference equations are solved in either software or hardware in a leapfrog manner: the electric field vector components in a volume of space are solved at a given instant in time then the magnetic field vector components in the same spatial volume are solved at the next instant in time and the process is repeated over and over again until the desired transient or steady-state electromagnetic field behavior is fully evolved. )

说明：  该程序用于生成zc序列(在LTE中的RACH过程和下行同步过程中使用的序列)。(this code is used to generate ZC sequence，whic is commonly used in the RACH procedure and the down link synchronization.)