Description: 是，关于ECG信号特征提取采样率为256Hz的ECG数据设计的滤波器-Yes, on the ECG signal feature extraction 256Hz sampling rate of ECG data for the design of filter Platform: |
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Author:目光 |
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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: |
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Author:zr |
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Description: 采用双线性变换法实现IIR滤波器 并且用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-IIR filters using the bilinear transformation method and the sampling sequence of the designed filter on the actual ECG signal simulation filtering Platform: |
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Author:yinchengjun |
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Description: 是，关于ECG信号特征提取采样率为为256Hz的ECG数据设计的滤波器
-Extracted on characteristics of the ECG signal sampling rate of 256Hz ECG data filter design Platform: |
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Author:yejinwei |
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Description: qrs detection
give it a time axis
filter ECG
plot data
resample the signal in the Frequency domain at n times the original sampling frequency
upsample rate
-qrs detection
give it a time axis
filter ECG
plot data
resample the signal in the Frequency domain at n times the original sampling frequency
upsample rate
Platform: |
Size: 6144 |
Author:vakily |
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Description: 简单的数字滤波器设计
1．用脉冲响应不变法设计巴特沃斯数字滤波器
2. 用双线性变换法设计切比雪夫数字滤波器
3. 用双线性变换法设计巴特沃斯数字滤波器，并将直接型结构转换成级联型结构
5.设计带阻滤波器
6．利用窗函数设计法设计FIR数字低通滤波器
7. 利用频率采样设计法设计FIR数字低通滤波器。
8. 创新训练拓展内容
（1）根据心电信号特点设计IIR或FIR滤波器滤除心电图信号噪声
（2）设计IIR滤波器或FIR滤波器对语音信号进行滤波。(Simple digital filter design
1. design of Butterworth digital filter by impulse response invariance
2. design of Chebyshev digital filter by bilinear transform
3. the Butterworth digital filter is designed by the bilinear transformation method, and the direct structure is converted into a cascade structure
5. design bandstop filter
6. design of FIR digital low pass filter by window function design
7. the FIR digital low pass filter is designed by using the frequency sampling design method.
8. the content of creative training and expansion
(1) design IIR or FIR filter to filter the noise of electrocardiogram signal according to the characteristics of ECG signal
(2) the IIR filter or FIR filter is designed to filter the speech signal.) Platform: |
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Author:jl12
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Search - filter sampling ecg signal