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labview5
使用低通滤波器从含有噪声的信号中提取有用的正弦波
(见实验指导书 实验九 数字滤波器中的第一题)
目的:用数字滤波器从含有高频噪声的采样数据中提取正弦信号。
要求:①输入信号为一正弦波,并加入一个白噪声的干扰来模拟信号传输中的随机干扰信号(用以模拟含有噪声采样序列)。
(模拟含有噪声采样序列具体可用正弦波信号叠加高频噪声来实现,为了使滤波效果明显,本实验的高频噪声是用高频均匀分布白噪声(Uniform)通过Butterworth高通滤波器过滤生成的,高通滤波器的截止频率设为10倍输入信号频率。)
②在程序中设计一个低通巴特沃斯滤波器,以滤除信号中的噪声分量,提取输入的正弦波信号 。
③可调节信号滤波器的截止频率和阶数,可显示滤波前与滤波后的时域信号。
④给出滤波前与滤波后的频谱特性的显示。
(Using low pass filter extracting useful sine wave signal containing noise(see experiment instruction digital filter in the first nine questions)Objective: to use digital filter sampling data extract containing high frequency noise sine signal.Requirements: (1) the input signal is a sine wave, and add a white noise interference to simulate the random disturbance signal of the signal transmission (to simulate contains noise sampling sequence).(simulated the sampling sequence contains noise available sine wave signal superposition of high frequency noise, in order to make the filtering effect is obvious, the experiment of high frequency noise is Uniform distribution with high frequency white noise (Uniform) by Butterworth high-pass filter to filter generated, high-pass filter cutoff frequency set to 10 times the size of the input signal frequency.)(2) in the program design a low-pass butterworth filter, in order to filter out the noise in the signal component, extract the input sine wav)
- 2014-11-23 09:08:57下载
- 积分:1
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FRM
Matlab code for Fluid Replacement Modelling
- 2015-02-20 16:49:53下载
- 积分:1
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TSP-matlab-gui
matlab 关于tsp解法的matlab程序,可以供大家参考下和学习下(About tsp solution matlab matlab program, can be used for your reference and learning under)
- 2013-12-17 18:06:07下载
- 积分:1
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parta
Architecture Lab Part A,计算机系统导论实验作业(Architecture Lab Part A)
- 2013-12-26 15:11:42下载
- 积分:1
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ekg
Electrocardiography (ECG or EKG) is the recording of the electrical activity of the heart over time via skin electrodes. This program make a EKG signal.
- 2009-04-23 09:45:58下载
- 积分:1
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pundulum
对于单级倒立摆的仿真以及控制的原理图以及源代码(The Inverted Pendulum Simulation and control schematics and source code)
- 2010-05-20 17:18:03下载
- 积分:1
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three_dim_plot
three dimensional Plot PSCAD using Matlab
- 2014-10-09 03:50:57下载
- 积分:1
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time_features1
画振动轴承时域信号特征图,包括rms,峭度,等。。(draw the feature pictures of rolling bearing using vibration signal.)
- 2015-04-16 17:21:42下载
- 积分:1
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menxian
说明: 灰度门限化许多情况,图象是由具有不同灰度级的两类区域组成。如文字与纸张、地物与云层(航空照片)。其特点:直方图具有两个峰,分别与两个灰度级范围相对应 。故可选择一个门限,将两个峰分开。(Gray threshold of many cases, the image is gray level of two different regional groupings. If words and paper, surface features and cloud cover (aerial photograph). Its features: histogram has two peak, respectively, with the two gray-scale range corresponding to. So choose a threshold, separating the two peaks.)
- 2010-04-28 18:15:31下载
- 积分:1
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simple-demo-ofmatlab
matlab 的简单实例,大家有需要可以来下载(matlab simple demo)
- 2013-07-24 09:55:57下载
- 积分:1