Description: 心电信号加入0.5Hz的基线漂移，通过0.5Hz高通滤波器，滤波后的波形与原波形的对比 ，滤波器特性曲线分析；信号加入50Hz工频漂移，通过50Hz陷波器，滤波后的波形与原波形的对比 ，滤波器特性曲线分析-ECG baseline drift by adding 0.5Hz, 0.5Hz through a high-pass filter, filtering of the waveform after the comparison with the original waveform, filter characteristic curve analysis adding 50Hz frequency signal drift, through the 50Hz notch filter, after filtering waveform compared with the original waveform, filter characteristic curve analysis Platform: |
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Author:孙川川 |
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Description: ECG心电信号预处理，高通滤波器，滤除呼吸基线漂移，带阻滤波器，滤除工频干扰，并两组滤波器的处理速度进行比较-ECG signal preprocessing, high-pass filter, filter respiratory baseline drift, band stop filter, filter frequency interference, and two filters to compare the processing speed Platform: |
Size: 2207744 |
Author:mkvt |
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Description: 心电信号低通滤波器、高通滤波器、带阻滤波器、以及QRS波检测-ECG low pass filter and high pass filters, band stop filter, and the QRS wave detection Platform: |
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Author:yangyuechao |
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Description: 1. 用双线性变换法设计一个巴特沃斯低通IIR数字滤波器。设计指标参数为：在通带内频率低于0.2π时，最大衰减小于1dB；在阻带内[0.3π, π]频率区间上，最小衰减大于15dB.
2.0.02π为采样间隔，打印出数字滤波器在频率区间[0, π/2]上的频率响应特性曲线。
3. 用所设计的滤波器对实际心电图信号采样序列进行仿真滤波处理，观察总结滤波作用与效果
附：心电图采样序列x(n)
人体心电图信号在测量过程中往往受到工业高频干扰，所以必须经过低通滤波处理后，才能作为判断心脏功能的有用信息。下面给出一实际心电图信号采样序列样本x(n),其中存在高频干扰。在实验中以x(n)作为输入序列，滤除其中的干扰成分。
{x(n)}={-4,-2,0,-4,-6,-4,-2,-4,-6,-6,-4,-4,-6,-6,-2,6,12,8,0,-16,-38,-60,-84,-90,-66,-32,-4,-2,-4,8,12,12,10,6,6,6,4,0,0,0,0,0,-2,-4,0,0,0,-2,-2,0,0,-2,-2,-2,-2,0}
-1. With the bilinear transformation to design a Butterworth low-pass IIR digital filter. Design target parameters: the passband frequencies below 0.2π, the maximum attenuation is less than 1dB in the stopband [0.3π, π] frequency range, the minimum attenuation greater than 15dB.
2.0.02π for the sampling interval, print out the digital filter in the frequency interval [0, π/2] on the frequency response curve.
3. With the designed filter on the actual ECG signal sample sequence to simulate filtering, observation summed up the role and effect of filtering
Attachment: ECG sampling sequence x (n)
Human ECG signal in the measurement process is often subject to industrial high-frequency interference, it must be low-pass filtering before they can determine cardiac function as a useful information. Here are a sample of the actual ECG signal sampling sequence x (n), where there is high frequency noise. In the experiment with x (n) as the input sequence, in which the interference filter e Platform: |
Size: 3072 |
Author:zr |
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Description: 在心电信号的采集过程中，会引入各种干扰噪声，如基线漂移。为了得到不失真的心电信号，在诊断分析前要对信号进行预处理---数字滤波。
FIR滤波器容易实现线性相位。对于相位要求严格的场合，要求用FIR滤波器实现滤波，实验要求用用FIR高通滤波器法去除其中基线漂移。
-ECG acquisition process, will introduce all kinds of interference noise, such as baseline drift. In order to get undistorted ECG in the diagnosis of pre-process the signal before--- digital filter. Linear phase FIR filter is easy to implement. For the phase-critical occasions, asked to use FIR Filter filter, test requirements with a high-pass filter with the FIR in which baseline drift removal. Platform: |
Size: 171008 |
Author:yujing |
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Description: 介绍了一种基于神经网络白化匹配滤波器的QRS 波检测方法。我们用神经网络白化匹配滤波器来处
理ECG 信号的低频成分, 模拟其非线性及非稳态的特性。处理后的信号中含有ECG 中大部分高频成分, 让其通过
一线性匹配滤波器来检测QRS 波及其位置。对于大噪声的ECG 信号, 在匹配滤波器后加差分滤波, 取平方及滑动
平均等处理, 提高检测正确率。使用这种方法我们对M IT?B IH 心电信号数据库中噪声比较大的105号数据进行的
处理, 检测正确率为9912 。作为对比, 用数字带通滤波器检测, 正确率为9718 。-Introduced a whitening matched filter based on neural network of the QRS wave detection. We use neural networks to handle the whitening matched filter low frequency ECG signal to simulate the nonlinear and non-steady state characteristics. Processed ECG signal contains most of the high frequency components, let through a linear matched filter to detect the QRS wave and position. For large noise the ECG signal after the matched filter plus differential filter, such as taking the square and the moving average processing, improve the detection accuracy. Using this method we have M IT?B IH noise ECG database of 105 large data processing, testing rate was 9912 correct. In contrast, detection with digital band-pass filter, the correct rate of 9718 . Platform: |
Size: 266240 |
Author:罗朝辉 |
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Description: 心电信号的计算机分析
通过理论结合实际，用C语言编程对MIT心电信号数据进行分析，实现低通滤波、高通滤波、QRS检测、特征提取、心律失常分析，从中了解和掌握数字信号处理的方法和应用。
-ECG computer analysis by the theory with reality, and C language programming on the MIT ECG data analysis, low-pass filter, high pass filtering, QRS detection, feature extraction, arrhythmia analysis, learn about and master the digital signal processing methods and applications. Platform: |
Size: 2909184 |
Author:焦春雨 |
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Description: 包含MSP430心电仪源代码，分为ECG读取，高低通滤波，液晶显示以及串口发送实现-include source code of MSP430 ECG instrument,such as ECG reading, high and low pass filter, liquid crystal display and the serial port Platform: |
Size: 5120 |
Author:Holden |
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Description: 用频率抽样法实现高通滤波器 频率为0-100HZ 用此程序可实现对心电信号基线漂移的消除-Use frequency sampling method achieve high-pass filter frequency of 0-100HZ with this program can be realized to eliminate ECG baseline drift Platform: |
Size: 1024 |
Author:禹爱兰 |
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Description: Quartus II中滤波器的设计，里面含有高通滤波器，低通滤波器，带阻滤波器，主要用于滤除心电信号中的干扰-Quartus II filter design, which contains a high-pass filter, low-pass filter, band stop filter, mainly used for filtering of ECG signal interference Platform: |
Size: 3363840 |
Author: |
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Description: 自己写的一段关于ECG滤波器的代码，陷波后低通，在高通滤波-Code they write a paragraph on the ECG filter low-pass, notch, high pass filter Platform: |
Size: 33792 |
Author:liu |
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Description: 对心电信号的基线消除，包含ECG信号和源代码，并在matlab中仿真，包含中值滤波，高通滤波，整系数滤波，和小波变换！都是一些简单的经典的方法-Elimination of baseline ECG, ECG signals and includes source code and simulation in matlab, including median filtering, high-pass filter, the filter with integer coefficients, and wavelet transform! Are some simple classical methods Platform: |
Size: 39936 |
Author:红烧排骨 |
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Description: A 12-lead ECG data acquisition system based on ADS1298 is presented in this paper. ADS1298 is a latest 16-
channel 24-bit Analog to Digital Converter (ADC) made in TI Company, which has the characters of high-precision,
low power and low noise, with the internal integration of the input multiplexers, analog low-pass filter, and digital
filter, etc. Platform: |
Size: 289792 |
Author:said |
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Description: 显示107号ECG的前300个数据,高通滤波器,反相器,低通滤波器-Display number 107 ECG data of the first 300, a high pass filter, an inverter, a low-pass filter Platform: |
Size: 1024 |
Author:小小蟹 |
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Description: MATLAB心电图自动诊断程序。围绕心电信号预处理、心电波形检侧与定位、心电特征提取与分析三个方面。研究MIT数据库中的心电信号，针对心电信号中存在的工频干扰、基线漂移、肌电干扰等各种噪声,设计出了高通、低通、带阻、平滑效果滤波器来对心电信号进行预处理，对处理后的信号采用连续小波变化进行特征点的定位及瞬时心率的计算，最后通过分析给出诊断结果。-MATLAB ECG automatic diagnosis program. Around the ECG signal preprocessing, ECG waveform detection and location, ECG feature extraction and analysis of three aspects, the study of MIT in the ECG signal. According to the frequency interference, baseline drift in the presence of ECG, EMG interference and other noise, design a high pass, low pass, band stop filter, smoothing effect of pretreatment of the ECG signal, the calculation of the processed signal using continuous wavelet transform to locate feature points and instantaneous heart rate, finally the diagnosis results. Platform: |
Size: 309248 |
Author:四叶草 |
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Description: 对MIT心电信号处理，线性插值，低通滤波，高通滤波，带阻滤波。
使用方法为在命令窗口输入R('XX.txt'),XX为你在MIT下载的txt数据。(MIT ECG signal processing, linear interpolation, low pass filter, high pass filter, band stop filter.
The use of the method is to enter R ('XX.txt') at the command window, and XX is the txt data you download at MIT.) Platform: |
Size: 3072 |
Author:夜月明1
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Search - ECG high pass filter