shixufenxi

matlab fft matlab fft hit (matlab fft hit matlab fft hit )

自己写的matlab小程序，用于解线性方程。可以参考下(Their own small programs written in matlab for solving equations. Can refer to)

article of pattern recognizer

本文件包含了两个直扩和跳频的例子，用MATLAB语言实现，而且还包括例子的原文及大量注释，十分详细(This document contains two examples of DS and FH, with the MATLAB language, but also examples of the original and a lot of notes, very detailed)

说明：  这是黑龙江大学自控理论专业同学在最优估计课程当中用matlab编写的gw算法!(This is the theory of controlled Heilongjiang University students in professional courses optimal estimate prepared by using Matlab algorithms gw!)

这个程序是通信系统的信道仿真，完成了某些信道仿真的功能(This program is the communication channel simulation system, complete channel emulation of some functions)

matlab学习案例，有导师学习神经网络的回归拟合(the matlab case study tutor learning neural network regression fit)

quadrature amplitude modulation without using inbuilt functions and in rayleigh channel

电磁波与电磁场的仿真，其中有平行双导线，同轴线电位仿真程序及仿真结果。(Electromagnetic waves and electromagnetic field simulation, parallel twin wire, coaxial potential simulation program and simulation results.)

说明：  针对低信噪比环境下基于能零比的端点检测方法准确率低的问题,提出了一种结合谱减法和短时零熵法的端点检测方法。首先通过功率谱减法对带噪语音进行降噪处理,然后结合短时平均过零率特征与谱熵特征,构造出一种新的语音参数,即短时零熵,最后运用双门限算法进行端点检测。实验结果表明该方法在复杂噪声环境下具有良好的端点检测性能,降低了检测的误判率。(To solve the problem of low accuracy of endpoint detection method based on energy zero ratio in low SNR environment, an endpoint detection method combining spectral subtraction and Short-term zero entropy method is proposed. Firstly, the noise is reduced by power spectrum subtraction, then a new speech parameter, short-time zero entropy, is constructed by combining the short-time average zero crossing rate and spectral entropy. Finally, the double threshold algorithm is used for endpoint detection. The experimental results show that this method has good performance of endpoint detection in complex noise environment, and reduces the rate of detection error.)