SOA_halfwave00

说明：  hht程序代码，小波变换，对比分量的功率谱密度函数图，找出最优小波(hht code, wavelet transform, as compared with the weight of the power spectral density function map to find the optimal wavelet)

用FFT计算信号的功率谱密度时，需要先计算FFT，再计算双边谱密度，然后计算单边谱密度。在matlab里注意FFt要除以采样点数，计算双边谱时要注意除以频率分辨率。 ( When calculated using the FFT power spectrum density signal, you need to calculate the FFT, and then calculate the bilateral spectral density, and then calculate the unilateral spectral density. In matlab in Note FFt divided by sampling points should be noted when calculating the bilateral spectrum divided by the frequency resolution.)

sep protocol where no direct transmission is allowedto base station even if it is near to base station

LCR calculates Level Crossing Rate, that is a number of crossings (in the positive direction) of an input vector through a given threshold vector.

说明：  利用PSO算法对PID参数进行整定并画图，matlab程序，测试过可以使用(Using PSO to adjust and draw the parameters of PID)

该实验描述的接收机行为。仿真发射信号在AWGN信道的传播及在接收端的检测。(The experiment described in the receiver behavior. Simulation transmitted signal in AWGN channel propagation and detection at the receiving end.)

该程序用于研究金属介质三维频率的有效介质理论，易于结果的实现。(The procedures for the effective medium theory of 3D metal medium frequency, easy realization results.)

基于 MATLAB 的语音信号分析与处理的课程设计.录制一段自己的语音信号，并对录制的信号进行采样；画出采样后语音信号的时域波形和频谱图；给定滤波器的性能指标，采用窗函数法或双线性变换设计滤波器，并画出滤波器的频率响应；然后用自己设计的滤波器对采集的语音信号进行滤波，画出滤波后信号的时域波形和频谱，并对滤波前后的信号进行对比，分析信号的变化；回放语音信号(MATLAB-based voice signal analysis and processing of the curriculum. Record a voice signal itself, and the recorded signal is sampled draw sampled speech signal time-domain waveform and frequency spectrum filter performance given by using window method or the bilinear transformation to design a filter, and draw the filter frequency response then filter of their own design collection of the speech signal is filtered, the filtered signal to draw the time domain waveform and frequency spectrum, and filter the signal before and after comparison, analysis of signal changes playback voice signal)

This source code use neural object to help student to understand the way to design the neural network using perceptron rule.

detect edes by canny edge detection based method