data_sec

说明：  基于Matlab的移动通信中多径衰落信道的仿真\基于多径传输和多普勒频移的 瑞利（Rayleigh）信道的仿真 主要考虑不同条件下的仿真(Matlab-based mobile communications in the multipath fading channel simulation \ based multi-path transmission and Doppler frequency shift of the Rayleigh (Rayleigh) channel simulation the main consideration of the simulation under different conditions)

设计了fir语音频段的低通、带通、高通滤波器。 可以用于语音信号处理。(A pile of fir filters are designed in this file, including lpf,bpf and hpf.)

利用空间平滑技术的多重信号分类MUSIC算法，在matlab环境下实现(The use of spatial smoothing technique multiple signal classification MUSIC algorithm in matlab environment to achieve)

用于效率评价的模型，检验成本支出评价的模型(Model, the inspection cost evaluation model for efficiency evaluation)

说明：  一个介绍语音处理软件praat的文档，里面详细有praat各个部分的介绍(one document that introduces how to use Praat)

heat transfer example 1a

MUSIC算法是一种基于矩阵特征空间分解的方法。从几何角度讲，信号处理的观测空间可以分解为信号子空间和噪声子空间，显然这两个空间是正交的。信号子空间由阵列接收到的数据协方差矩阵中与信号对应的特征向量组成，噪声子空间则由协方差矩阵中所有最小特征值（噪声方差）对应的特征向量组成 (MUSIC algorithm is a feature space based on matrix decomposition method. From the geometric point of view, the observed signal space can be decomposed into signal subspace and noise subspace, it is clear that two spaces are orthogonal. Signal subspace to the data received by the array covariance matrix and the eigenvector corresponding to the signal component, the noise subspace from the covariance matrix of all the smallest eigenvalue (noise variance) eigenvector corresponding to the composition )

MATLAB.GUI教学视频3：滚动条数值显示在文本框中(MATLAB.GUI instructional videos 3: scroll bar value displayed in the text box)

利用牛顿多项式插值法观察多项式的龙格现象。(Newton polynomial interpolation polynomial Runge phenomenon observed.)

基于matlab的扩频通信设计，walsh码扩频，Bpsk调制(Matlab-based spread spectrum communication design, walsh code spread spectrum, Bpsk modulation)