using_c_to_mex_file_in_matlab

天线方向图的波达方向，用于描述回波的方向图2，可以用于初学者学习使用(DOA antenna pattern, used to describe the echo pattern 2, can be used for beginners to learn to use)

minimum spanning tree

评估2X2MIMO系统线性MMSE检测的硬判决和软判决性能，仿真了瑞利衰落信道。(Linear MMSE detection system to assess 2X2MIMO hard decision and soft-decision performance, simulated Rayleigh fading channels.)

使用MVDR算法进行波束形成并处理宽带信号，该算法分频带进行处理，并最后给出了波束图。(MVDR algorithm is used for beamforming and broadband signal processing. The algorithm divides the frequency band for processing, and finally gives the beam pattern.)

设计一个简单的GUI界面，对导入的音频文件进行时域特性分析。计算其时域波形、平均幅度、短时能量、短时过零率。对该音频文件进行加噪处理，分析其时域波形变化。设定一个固定时长，对该音频添加回声并保存为“*.wav”格式文件。 对音频文件的时域分析是对音频文件进行传输、降噪及其他再编辑的基础。其中短时能量可用作清浊音区分的标准和语音起始点的判断。短时过零率可用作判断有声段与无声段和从背景噪声中提取语音信号。 (Design a simple GUI interface that time domain characteristics analysis on import audio files.Calculate the average time domain waveform, amplitude, short-time energy and short-time zero crossing ratio.Add to deal with the noise of the audio files, analyze the changes in the time domain waveform.To set a fixed time, to add the audio echo and saved as a *. Wav format file. The time domain analysis of the audio file was transmitted to audio files, noise reduction and other editor again.The short-time energy voiced distinguish between standard and can be used as a clear voice starting point judgement.Short-time zero crossing ratio can be used as a judgment audio segment and silent segment and extract speech signal background noise.)

迭代法计算图像阈值，程序可以用，我试过了，有做图像处理方面的朋友可以试试

Dennis M.Sullivan FDTD书后matlab程序 已经调试验证 第四章(Dennis M.Sullivan matlab program using FDTD book have been debug and verify)

quantization in pam modulation

基于模态振型的固定结合面动态特性参数测试 (Based on a fixed mode shapes combined with dynamic characteristic parameters of the test surface)

小波包分析提取振动信号中的特征频率，二维声子晶体FDTD方法计算禁带宽度的例子,采用的是通用的平面波展开法。( Wavelet packet analysis to extract vibration signal characteristic frequency, Dimensional phononic crystals FDTD method calculation examples band gap, Using common plane wave expansion method.)