acwmf.m

完成DSSS调制解调功能 mode[1，2] 1进行调制，2进行解调，未指定时自动完成这两个功能(Completion of DSSS modulation and demodulation functionality mode [1,2] 1 modulation, 2 to carry out demodulation, when the auto-complete does not specify that these two functions)

DCT based Image Watermarking matlab code

this is a matlab GUI developed to record speech of the user in various languages. this GUI contains various user interfaces that help to store the recorded word to a wav file. also the recorded signal will be plot in the axes window.

分形维数计算的毯子算法matlab代码,混沌的判断指标Lyapunov指数计算,车牌识别定位程序的部分功能。( Fractal dimension calculation algorithm matlab code blankets, Chaos indicator for Lyapunov index calculation, Part of the license plate recognition locator feature.)

代码实现了超宽带基本定位算法，包括TOA,TDOA,以及TOA三维定位，所有代码已经在matlab 7.1下调试通过(The code is about basic positioning alogrithm of UWB,including TOA,TDOA and the 3d positioning of TOA,all of them is debuged successfully on matlab 7.10.)

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. )

2d heat conduction problem in matlab

基于状态观测器的二自由度汽车建模及控制分析，有动画直观显示(State observer based on two degrees of freedom and control of automotive modeling analysis has animated visual display)

根据均匀分布陈胜的特点，产生了0-1均匀分布的随机序列(Produced a 0-1 uniformly distributed random sequence)

matlab系列教程2010年版，可有效学习matlab这一强大的工具(matlab tutorial series 2010 edition, which can effectively learn this powerful tool matlab)