yuzhifenge

短时能量与过零率，别人写的，好像是可以用的，大家试试啊(Short-term energy and zero-crossing rate, someone else wrote.maybe it can be used, please try it .)

3麦克风tdoa定位matlab仿真代码(3, positioning the microphone tdoa matlab simulation code)

适合有一定基础的学生学习，简单的小例子，关于电机的使用方法的介绍(There is some basis for students to learn, simple little example, with regard to the introduction of the use of motor)

通过均值滤波、高斯滤波等实现图像平滑处理，使用MATLAB编程，完全无错能跑。(Image smoothing by mean filtering, Gaussian filtering achieved using MATLAB programming, completely error-free run.)

wavelet domain denoising-code小波图像去噪源代码，可以使用，能够运行出结果。(wavelet domain denoising)

包含轴承故障数据，来源于MFPT（Machinery Failure Prevent Technology）论坛，分四组训练数据和测试数据； 数据可直接做频谱分析，效果很好(contain bearing faults data sets, 4 train datas and 4 test datas, can be used for FFT/envespectrum analysis, and you will get perfect effects.)

约束优化问题，主要包括坐标轮换法，外点罚函数法，混合罚函数法，加速混合罚函数法，梯度投影法，乘子法(Constrained optimization problems, including the method of coordinate rotation, the outer points penalty function method, mixed penalty function method, accelerating hybrid penalty function method, the gradient projection method, multiplier method)

 利用fft()进行快速傅立叶变换，得到频谱，画出正弦函数及其频谱  找出频谱中使得Y轴取最大值时的估计频率记为ft  加入白噪声，绘出信噪比和均方误差的关系曲线 ( using fft () for fast Fourier transformation, spectrum, to draw the sine function and its spectrum  find the spectrum makes the Y-axis maximum value when the estimated frequency is denoted by ft  adding white noise, SNR plot and mean square error curve)

GSC based beamforming

code for simulating wsn