moshishibieyuanma

利用谱减算法实现对航空录音的处理。主要思想是相对语音进行加噪声，然后再利用算法去噪声，比较前后信噪比的变化。根据实验结构，去噪效果明显。(The use of spectral subtraction algorithm for handling aviation record. The main idea is to increase the relative voice to the noise, and then use the algorithm to noise, signal to noise ratio before and after the change. According to the experimental structure, de-noising effect is obvious.)

说明：  最小化l1范数的Matlab代码。求解模型为： min lambda*|x|_1+||A*x-y||_2。其中，|x|_1表示x的1-范数，||*||_2表示2-范数。该模型在稀疏成分分析、压缩传感器等领域有广泛的用途。( l1-Regularized Least Squares Problem Solver l1_ls solves problems of the following form: minimize ||A*x-y||^2+ lambda*sum|x_i|, where A and y are problem data and x is variable (described below). )

利用matlab采用最小二乘法很好的实现了振动阻尼的数值求解(Least square method using matlab realize very good vibration damping of the numerical solution)

小波去噪方法，matlab语言描写，简单实用(Wavelet denoising, matlab language to describe simple and practical)

关于matlab软件用法的介绍，及教程 （线性系统方面的应用）( Soft Introduction to Matlab Demonstration of Numerical Computations Create vectors, sample sinusoids and Chirp Signals Generate and plot Continuous-time and Discrete-time signals )

基于BP网络预测的matlab程序，可以用于BP网络预测，matlab编译通过(BP network based on the forecast matlab procedures, can be used in BP network prediction, matlab compiler through)

说明：  利用MATLAB编写的该算法可以对小球碰撞的过程进行模拟(Prepared using the MATLAB algorithm for small ball to simulate the process of collision)

MATLAB源代码 MATLAB求解混沌系统微分方程组(The digital image scrambling technology based on affine transformation MATLAB source code )

扩展卡尔曼滤波算法用matlab实现。分别计算出观测值和卡尔曼滤波值进行对比。(Extended Kalman filter algorithm using matlab implementation. Observed values were calculated values were compared and Kalman filtering.)

通过matalb实现语音信号的处理，完成预加重、加窗函数、端点检测及生成处理后语音样本(Achieved by processing the speech signal matalb, complete the pre-emphasis, windowing function, voice activity detection and generation after sample processing)