changed-BIHT-l2-1

Matlab 操作技巧与常用函数。帮助Matlab初学者迅速掌握Matlab环境下编程技巧。(Matlab operating skills with commonly used functions. Help the Matlab environment for beginners to grasp the Matlab programming skills.)

代码用于实现回声消除，用递归最小二乘算法（RLS）实现声学回声消除(AEC Code for echo cancellation, acoustic echo cancellation with recursive least squares algorithm (RLS))

自己写的PCA降维算法，还有模糊k均值大家可以参考一下(Write their own PCA dimensionality reduction algorithm, and fuzzy k means we can refer to)

Madaline Neural Network for character recognition. Designing a Madaline (Multiple Adaline) Neural Network to recognize 3 characters 0, C and F supplied in a binary format and represented using a 7x7 grid. The Neural Network should be trained and tested with various patterns, then the total error rate and the amount of convergence should be observed.

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. )

波音747飞机运动空间六自由度仿真模型-Simulink程序(The Simulink of 6-DOF Model for Boein 747)

调制的代码，包含FSK,ASK等多种调制方式。(Modulation code, including FSK, ASK modulation, etc..)

利用MATLAB软件实现偏最小二乘回归方程模型(use the soft of the MATLAB to calculate the partial least-squares regression )

说明：  利用WS模型的断边重连特性从网络中随机选择边进行断边重连，以此来改变算法的邻域结构，提高算法的多样性。(the model off Bian WS rewiring randomly selected features from the network of conducting an off side reconnection algorithm in order to change the neighborhood structure, increase the diversity algorithm.)

巴特沃斯滤波器设置，自行设置阶数、截止频率等滤波器参数(butter-worth filter)