-
Chapter-17-Statistics-and-analysis
第17章 数据统计和分析.zip。是从书中光盘里直接拷贝的代码,放在这里,与大家共享,共同交流,希望对大家有帮助。(Chapter 17 Statistics and analysis.zip)
- 2012-03-27 11:14:40下载
- 积分:1
-
Matlab_scientific-language
《MATLAB语言-演算纸式的科学工程计算语言》,详细讲述Matlab编程入门,术语Matlab基础书籍(" MATLAB language- calculus paper-based scientific engineering computing language," a detailed account of Matlab programming entry, terminology Matlab based on books)
- 2013-07-29 11:37:12下载
- 积分:1
-
ding
选取windows系统自带的ding.wav信号作为分析对象,在Matlab软件平台下,利用函数wavread对音频信号进行采样,记住采样频率和采样点数,听一下原始声音sound(y, fs, bits)。
(2)音频信号的频谱分析,先画出音频信号的时域波形;然后对音频号进行快速傅里叶变换fft(y,N),N取32768,画出信号的频谱特性,加深对频谱特性的理解。
(3)根据频谱,反演时域特性,画出时域波形。寻找幅值最大的两个频率,此频率除以fft点数在乘以采样频率就是信号的主频,即可合成信号的时域图形,听一下声音。
(4)对原音频信号进行1024点的分段付立业分析meshgrid
(5)根据主要频线合成音频,并画出时域图形,试听合成效果。
(6)采用线性插值(linspace)和傅立业反变换(fliplr, ifft)分别合成音频,并画出时域图形,试听效果。
(err)
- 2009-01-13 16:23:47下载
- 积分:1
-
log-gabor
log-gabor用于年龄变化的人脸重构,效果很好(log-gabor)
- 2009-05-30 10:49:02下载
- 积分:1
-
Planning
主要为matlab中解决数学规划问题的源程序,及讲解优化问题的课件(Planning)
- 2010-07-11 13:06:10下载
- 积分:1
-
K_means
在MATLAB上实现k_means算法,包含k_means算法的思想,和实现方法和程序(In the MATLAB algorithm to achieve k_maens)
- 2009-04-14 21:14:02下载
- 积分:1
-
Chapter6
数值解法
例1 用改进的欧拉方法求一阶方程初值问题的
数值解
例2 数学摆的运动方程与近似方程数值解比较
例3 四阶龙格库塔公式求数值解
Matlab实现求数值解
例1 求初值问题y =x*sin(x)-y,y(0)=0的数值
解.先编辑一个定义方程的ODEF函数文件
ODEfun1.m.
例2 求方程组初值问题的数值解,按指定步长
0.05划分节点.
例3 按指定的精度求高阶方程初值问题的数值解.(Numerical Solution of the law a method of using the improved Euler' s equation of order to a first-order initial value problem of the numerical solution of cases of two mathematical pendulum equations of motion compared with the approximate numerical solutions of equations of three cases of fourth-order Runge-Kutta numerical solution of the formula Matlab order to achieve the numerical solution of demand cases seeking an initial value problem y ' = x* sin (x)-y, y (0) = 0 the numerical solution. first, the definition of an equation editor ODEF function file ODEfun1.m. cases of two demand equations initial value problem of numerical solution, according to the specified division of the node step 0.05. Example 3 according to the specified precision of seeking higher-order equation of the numerical solution of initial value problem.)
- 2010-02-05 23:14:41下载
- 积分:1
-
digitalmodulationtechniques
尝试用MATLAB对数字通信系统的各种数字调制技术进行仿真(Try to use MATLAB for digital communication system simulation of various digital modulation techniques)
- 2010-06-01 21:16:26下载
- 积分:1
-
Chaotic-prediction
混沌时序多步预测函数,采用matlab编程,简单易懂(Chaotic time series multi-step prediction function, using the Matlab programming, easy to understand)
- 2012-06-14 09:00:38下载
- 积分:1
-
yi
说明: 基于matlab 的叠加高斯白噪声的正弦信号频谱分析,给定正弦函数x=sin(2πf0n/N+π/3)+sin(2πf1n/N+π/4),设定f0.f1的值,加了噪声之后做快速傅里叶变换,在matlab中分析其频谱,验证是否与f0,f1的值符合。再变换N值,看随着N值的变化对应点是否符合及有何变化。(Matlab based on the superposition of Gaussian white noise sinusoidal signal spectrum analysis, given the sine function x = sin (2蟺f0n/N+蟺/3)+sin (2蟺f1n/N+蟺/4) set value of f0.f1, do a quick noise Fourier transform to analyze the spectrum in matlab, verify that with f0, in line with the value of F1. Transform the value of N, see change as the value of N corresponding points of compliance and what changes.)
- 2013-05-01 13:44:49下载
- 积分:1