xitong

matlab的两个小球碰撞的模拟程序，很简单的。平时没事瞎编的。(Matlab two small ball collision simulation program, a very simple. Nothing pleases the peacetime.)

projet 1 is very importand

This is a matlab source code of genetic algorithm for optimizing a features based on KNN classifier... the data is available in matlab environment.This code ready to implement.

传统的短时谱估计语音增强算法通常假设语音谱分量相互独立，没有考虑语音谱分量间的相关性。针对这 一问题，该文提出一种新的基于多元Laplace分布模型的短时谱估计算法。首先，假设语音的离散余弦变换(DCT) 系数服从多元Laplace分布，以此利用谱分量间的相关性；在此基础上，利用多元随机矢量的高斯尺度混合模型表 示，推导得到语音DCT系数矢量的最小均方误差(MMSE)估计的解析表达式；并进一步推导了基于该分布模型的 语音存在概率，对最小均方误差估计子进行修正。实验结果表明，该算法在抑制背景噪声和减少语音失真等方面优 于传统的语音增强方法。(The spectral components of speech are usually assumed to be independent in traditional short-time spectrum estimation, which is not the case in practice. Tosolve this problem, a new speech enhancement algorithm with multivariate Laplace speech model is proposed in this paper. Firstly, the speech Discrete Cosine Transform (DCT) coefficients are modeled by a multivariate Laplace distribution, so the correlations between speech spectral components can be exploited. And then a Minimum-Mean-Square-Error (MMSE) estimator based on the proposed model is derived using a Gaussian scale mixture representation of random vectors. Furthermore, the speech presence uncertainty with the new model is derived to modify the MMSE estimator. Experimental results show that the developed method has better noise suppression performance and lower speech distortion compared to the traditional speech enhancement method. )

雷达LFM信号匹配滤波程序，压缩带宽，列出了匹配滤波器的系统函数(Radar LFM signal matched filtering process, compression, bandwidth)

实现巴克码筛选，可以选出所有长度的巴克码码组。并进行画图(Achieve screening, Barker code, you can elect all of the length of the Barker code group. And for drawing)

非常好的应用软件，欢迎大家抢购使用,非常非常好非常好非常好非常好非常好非常好(very beautiful ,please come and buy)

梯度下降法是一个最优化算法，常用于机器学习和人工智能当中用来递归性地逼近最小偏差模型(The gradient descent method is an optimization algorithm used in machine learning and artificial intelligence to recursive approximation of the minimum deviation model )

all about signal modulation it is useful

聚类分析的案例，用maltab方法实现，修改可以使用(Cluster analysis of cases with maltab method, can be used to modify)