Higher-Order-Spectral-Analysis

This is the code of speech processing.

matlab中利用矩量法求解Hallen方程仿真八木天线并得到天线方向图与增益。(In the MATLAB, the Hallen equation is solved by the method of moments, and the Yagi antenna is simulated, and the antenna pattern and gain are obtained.)

LMS 和 NLMS 算法的比较，用于system identification对在学习随机过程，信号处理，滤波器的人有帮助.(LMS compared with NLAM algorithm for system identification)

信源编码,香农编码，实现了部分功能。希望大家积极改正。(Source coding, Shannon coding, to achieve some functionality. I hope you actively corrected.)

buildroot openwrt for development with samba4

一个二维的fdtdc++编写的程序，较完整，带有pml边界条件。感兴趣的可以下载看看。(A two-dimensional fdtdc++ preparation procedures, more complete, with pml boundary conditions. Interested can download to see.)

一个完整模拟地震正演的程序，能够正常运行，完美显示了地震波剖面图。(seismic forward modeling)

对于周期图的功率谱估计,当数据长度N太大时,谱曲线起伏加剧, 若N太小,谱的分辨率又不好,因此需要改进。两种改进的估计法是 平均周期图法和平滑平均周期图法。Bartlett法:Bartlett平均周期图 的方法是将N点的有限长序列x(n)分段求周期图再平均。(For the power spectrum estimation of the periodogram, when the data length N is too large, the spectral curve fluctuation intensifies,   If N is too small, the spectral resolution is not good, so need to be improved. The two improved estimates are   Average Period Graph and Smooth Mean Period Graph. Bartlett method: Bartlett average cycle chart   Is to re-average the finite-length sequence x (n) of N points by periodogram.)

三电平三相三线制APF，在dq坐标系下进行电流环的控制，采用无差拍加前馈解耦的控制策略，调制方式采用svpwm方法，matlab2006b,高版本可能需要更换低通滤波器(Three-level three-phase three-wire APF, in the dq coordinate control current loop, using deadbeat plus feedforward decoupling control strategy, modulation using svpwm method, matlab2006b, high version may need to replace the low-pass filter)

程序里面有renix格式的数据，可以用来进行进行精密单点定位处理。(The program has data in renix format, which can be used for precise point positioning)