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FrequencyDomainAnalysisOfTheSystem
信号频谱分析
1. 观测已知方波信号、正弦波信号的频谱
分析频率为4KHz、8KHz的占空比为50 的方波信号、正弦波信号的频谱。记录所得频谱图。
观测实时模拟信号（语音）的频谱
用音频设备采集一段语音，将语音存为.wav格式。对wav文件作分段傅里叶变换分析。语音是分音节的，应把它分段分析，而且实际运用中的数字信号处理的FFT的点数是有限的，一般只能达到千点。用傅里叶反变换IFFT，从频域恢复信号。画出频谱图和语音波形图(Signal spectrum analysis 1. Observing a known square-wave signal, sine wave signal frequency spectrum analysis 4KHz, 8KHz for the 50 duty cycle square wave signal, sine wave signal frequency spectrum. The recorded frequency spectrum. Observing real-time analog signal (voice) of the spectrum collected with the audio devices section of voice, voice saved as. Wav format. Wav file of the sub-Fourier transform analysis to make. Speech is divided into syllables, it should be sub-analysis, and practical application of digital signal processing of the FFT points is limited, generally only reach 1000 points. Fourier inverse transform IFFT, to restore the signal from the frequency domain. Draw maps and voice waveform spectrum)
- 2010-01-27 16:23:22下载
- 积分：1
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wind-generator-in-pscad
各种PSCAD风机模型(当时做风机模型时候辛辛苦苦收集到的)(all kinds of wind generator in pscad(did fan model when hard to collect))
- 2016-05-03 10:52:50下载
- 积分：1
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nclncarg521.x8664nodapgcc412.tar
ncarg非常好用的气象绘图软件，针对x86_64体系的。用gcc4.2.1版本编译的。(ncarg weather mapping software is very easy to use for x86_64 systems. Compiled by gcc4.2.1 version.)
- 2011-04-23 21:11:34下载
- 积分：1
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System-identification
系统辨识作业 考虑如下模型
z(k)-1.5z(k-1)+0.7z(k-2)=u(k-1)+0.5u(k-2)+v(k)
其中v(k)是均值为0，方差为1的白噪声。根据模型生成数据，采用递推最小二乘法对模型参数进行辨识，要求绘出各参数随时间的变化曲线。
("System identification" computer test 。Consider the following model
Z (k) to 1.5 of z (k- 1)+ 0.7 z (k- 2) = u (k- 1)+ 0.5 u (k- 2)+ v (k)
The v (k) is the mean to 0, the white noise variance 1. Generate data according to the model, the recursive least squares method is adopted to model parameters are identified, draw the parameters changing with time curve.
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- 2020-12-17 20:19:11下载
- 积分：1
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myselfB
已知型值点反求控制点，最后获得B样条曲线(Data points are known to reverse the control point, and finally obtain B-spline curve)
- 2020-10-30 16:59:55下载
- 积分：1
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optimal-WPMT-based-on-MSE
基于最小均方误差准则的小波包树结构的选择 仿真程序(Based on minimum mean square error criterion selection of wavelet packet tree structure simulation program)
- 2011-05-05 19:54:19下载
- 积分：1
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ROC曲线
说明： 利用matlab绘制ROC曲线图，需要的同学们可以自行下载。(ROC curve drawing with matlab,students who need it can download it by themselves.)
- 2020-02-26 20:15:33下载
- 积分：1
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RayTracing
采用层次包围盒、八叉树加速的光线跟踪算法(ray tracing using level boundary box and eight branch tree algorithm)
- 2020-12-31 21:48:59下载
- 积分：1
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zhiliangpinjing
对三维融合后的图像进行质量评价，其中包括信息熵、平均梯度、标准差、空间频率、均方根误差、峰值信噪比
(The three-dimensional fusion of the image quality uation, including information entropy, the average gradient, standard deviation, spatial frequency, root mean square error, peak signal to noise ratio)
- 2021-01-07 17:58:52下载
- 积分：1
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Circle_Picture
这是一个简单的画圆功能，主要让用户学会如何利用Windows提供的画图工具，用户单击鼠标右键则会弹出对话框选择线宽，在菜单上也设计了圆的颜色选择菜单。(This is a simple function of the Circle. mainly for users to learn how to use Windows for the drawing tools, Users right-click pop-up dialog box will be chosen linewidth, the menu also designed a circular color choice menu.)
- 2007-06-03 09:44:30下载
- 积分：1
