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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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TQWZZB
cad提取文字坐标 能提取文字所在点的坐标值并保存到text中 (cad text extraction coordinates coordinates of the text can be extracted and saved to the point where the text of the)
- 2014-01-10 23:28:48下载
- 积分：1
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Computer-graphics
计算机图形学 杨钦 徐永安 翟红英 编著(Computer graphics Yang Qin XU Yong Di Hongying edited)
- 2013-03-12 10:47:30下载
- 积分：1
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matlab-
B样条曲线控制点反求 生成曲线 求插补点(b-spline interpolation)
- 2020-10-27 18:30:03下载
- 积分：1
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muapInterface
肌电信号EMG中muap波形的产生gui程序.主要程序是TriMUAP_LAP_improve.m，其中需要调用SFAP_tri_improve.m 和mgd.m两个程序(EMG EMG in muap waveform generation gui program. The main program is TriMUAP_LAP_improve.m, which need to call the two procedures SFAP_tri_improve.m and mgd.m)
- 2010-02-24 16:48:39下载
- 积分：1
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读取dxf
说明： 实现对单图层dxf文件的信息采集，例如直线的起止点、圆弧的圆心与半径等(Achieving Information Collection of DXF Files with single layer)
- 2019-06-29 10:47:57下载
- 积分：1
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zhihuanbijiao
自己利用ＰＳＣＡＤ搭建的滞环比较变换器，成功的仿真出正弦波形。(Their use of hysteresis built PSCAD converter, a successful simulation of the sine wave.)
- 2011-11-08 09:35:47下载
- 积分：1
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Academic-Phrasebank-Enhanced-Personal-2016
The Academic Phrasebank is a
general resource for academic
writers. It makes explicit the more
common phraseological ‘nuts and
bolts’ of academic writing.
- 2017-04-29 19:43:15下载
- 积分：1
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svmplot
支持向量机的画图程序。能够很好的将识别到的不同类型分量，可视化。(Support vector machine (SVM) drawing program. Can very good will to identify the different types of component, visualization.
)
- 2012-12-04 09:56:11下载
- 积分：1
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VB三维物体图形绘制演示程序
vb运行的三维演示程序例程，显示三维图的(Three dimensional demonstration)
- 2021-02-08 09:49:55下载
- 积分：1
