fem_wn-(1)

实现对自己录制语音信号的加噪，并设计滤波器对其滤波。(To achieve their own recorded voice signal plus noise, and to design filters for its filter.)

说明：  通带截止频率 =2 4k rad/s，阻带截止频率 =2 8k rad/s，通带波纹系数 =0.3dB, 阻带波纹系数 =50dB,采样频率fs=20000Hz。(The digital filter are the digital signal processing important content, the digital filter may divide into IIR and the FIR two main kinds. As for the IIR digital filter design, we need the help of analog prototype filter, and then transform analog filter into digital filter.)

SPEAKER RECOGNITION SYSTEM

blind image watermarking...........image hidding in image using SVD

这是一个计算一维时间序列盒维数的计算程序，用matlab语言编写，希望对大家有帮助。(This is a calculated one-dimensional time series box dimension of the calculation procedures, using Matlab language. We want to help.)

each bank has this offset apart from the 1 2 bank that is mixed into the other 3 ranges.

基于马尔科夫的蒙特卡罗算法，可以精确计算各种随机事件，但是不能运用于太大的系统(Monte Carlo algorithm that can accurately calculate the various random events, but can not be much of a system)

求解一个矩阵的最大特征根及最大特征根对应的特征向量，并对其归一化，求出权向量。主要用来解决数学建模层次分析法中需求解的各指标权重值。以及附带了几个动态图形的制作编程(The eigenvector of the largest eigenvalue and the largest eigenvalue of a matrix is solved and normalized, and the weight vector is obtained. It is mainly used to solve the weight of each index in demand analysis of mathematical modeling.And programming with several dynamic graphics)

说明：  卡尔曼滤波器是用前一个估计值和最近一个观察数据估计信号的值，他是用状态方程和递推的方法进行估计，本例用来追踪一个5阶的FIR不确定的滤波器系数。(Kalman filter is to use the previous estimate and the most recent observation data to estimate the value of the signal, he is using the state equation and recursive estimation methods, in this case is used to track a 5-order FIR filter coefficients of uncertainty.)

信号与系统试验报告 离散傅立叶变换（DFT）和频谱分析 一、实验内容 1、实验题目 （1）编写DFT、IDFT程序，并验证其正确性（提示：可利用冲激函数进行验证）。 （2）计算信号f(t)=e-at2sin(2∏ft)的离散傅立叶变换（DFT），求其振幅谱，相位谱、振幅最大值对应的频谱（检测主频）以及对发f(t)进行DFT变换的结果实现IDFT变换，并画出图形。 参数选择如下：频率f =30HZ，a=f 2㏑(M),M=2.5 2、通过实验理解信号振幅谱、相位谱的物理意义，掌握DFT、IDFT算法的实现方法。()