rk_4

Designing slider in GUI : I updated the original code to make function return value its window to another window.

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. )

说明：  该算法实现了宽带麦克风阵列的波束形成，主要采用了频域DFT和时域FIR波束形成器(The algorithm for broadband microphone array beam-forming, the main frequency domain using DFT and time-domain FIR Beamformer)

the fast version of ica algorithm

介质共形FDTD技术，可以很好地计算圆柱介质的谐振频率，也可以计算谐振腔中含有介质球的谐振频率(Dielectric conformal FDTD technique can be a good medium to calculate the resonant frequency of the cylinder can also calculate the resonant frequency of the resonant cavity containing a dielectric sphere)

扩展卡尔曼滤波在跟踪运动轨迹中的应用（matlab程序）(Extended Kalman filter (EKF) simulation demo)

说明：  增量式PID matlab控制例程，可以尝试调节Kp/Ki/Kd(Incremental PID matlab control routine)

bean recog -gui red , green and black color only M file

用matlab求图像阈值分析程序，一种是直方图阈值法一种是最大类间方差(Using matlab and image threshold analysis program, a variance between a Histogram method is the largest class)

oscil.m - matlab, this is file-function for modeling Lotka-Volterra dynamical system nezatSt.m - program for modeling