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心电信号滤波,数字信号处理课后试验,其中有源程序,频谱图,滤波图-ECG filtering, digital signal processing OSCAR test, which is the source, the spectrum, filtering plan
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本次实验是要我们先产生心电信号,再加噪声再滤波。由一个心电信号数据表输出心电信号,由于已知的心电信号有噪声,所以我先将信号进行滤波,得到正确的心电信号。再加噪声,通过滤波可以得到高频和中频噪声,将原信号加上噪声显示再滤波。每次的时域信号都画出了他们相应的频谱,便于观察。每次的滤波我也尝试了不同的滤波器。-This experiment is to produce our first ECG, together with noise and then filtering. ECG data fro
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输入信号: cm.txt 含有胎儿和母亲的心电信息的混合心
电信号.
mother1024.txt 母亲的心电信号
参数: 抽样频率:200Hz
数据长度:1024
要求: 用自适应滤波的LMS算法抵消掉混合心电信号中
母亲的心电信号。
注意u和N的选取,在报告中说明u和N的选取对滤
波结果的影响。
自适应滤波By莫小凯-Input signal: cm.txt containing the fetus and the mother o
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为了采集准确的心电信号,设计了一套基于瞬时心率信号抗干扰测量的方法,针对微弱并易受干扰的心电采样信号,进行有效地硬件以及软件滤波,通过软件数字滤波算法,得到真实的心率信号-Set based on the instantaneous heart rate signal immunity measuring method to collect accurate ECG, ECG sampling signal for the weak and vulnerable to interference,
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用于心电的一种低通数字滤波算法,该方法设计简单、运算量小,对有用信号的影响小。同时设计了相关的界面,用于实时显示心电信号的波形,且可以在不同背景下将心电信号显示出来。-Used for the ECG a low pass digital filtering algorithm, the method is designed to be simple, small amount of computation, the impact of the useful signal. While the
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心电信号R波检测的函数,包括降采样,滤波,希尔伯特包络提取三个预处理步骤。其中R波根据阈值检测,相对不应期要根据具体信号适当调整.-ECG R-wave detection functions, including down-sampling , filtering, Hilbert envelope extracted three pretreatment steps. Wherein R wave detection based on a threshold , the relative r
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用labview编的心电信号处理的程序,主要实现R峰检测,频谱分析-ECG signal processing, filtering, spectrum analysis
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处理心电信号。滤波和计算之1:bland Altman-ECG signal processing. Filtering and calculation
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心电信号处理,滤波与计算 之:数据的读取-ECG signal processing, filtering and calculation of: reading data
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心电信号处理,滤波与计算 之:去除漂移基线子程序-ECG signal processing, filtering and calculation of: removing baseline drift subroutines
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以软件为主的方法实现QRS波的检测滤波之后的信号一般经过一些
变换以提高QRS波的份量,进而采用一系列阈值进行判别,这些阈值有固定
阈值法,也有可变阈值法。前者由于可能的干扰或高P、高T波的存在,若
其滤波后超过其阈值便会产生假阳性(FP,falsepositive)结果;另外,当心
律失常或QRS波幅度变小,阈值设置过高,会导致漏检产生假阴性(FN,
falsenegative)结果。由于固定阈值的这些缺点,有研究者提出了用可变阈
值检测,以提高检测的精确率,所采用的可
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the code is to read an ecg signal,preprocess it by doing normalization and bandpass filtering.then the features are extracted using dual tree complex wavelet transform.
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虚拟力的无线传感网络覆盖,对信号进行频谱分析及滤波,内含心电信号数据及运用MATLAB写的源代码。- Virtual power wireless sensor network coverage, The signal spectral analysis and filtering, ECG data and includes source code written in MATLAB.
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ADS1292R基于430的驱动程序,可以采集心电信号,并作滤波处理,同时计算出心率-ADS1292R based on 430 drivers, can collect ecg signal, and filtering processing, calculate the heart rate at the same time
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此程序适用于用MATLAB编程进行一些微弱信号的滤波,比如说心电信号,效果明显。-This procedure applies to MATLAB programming some weak signal filtering, such as ecg signal, the effect is obvious.
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维纳滤波对心电信号去噪,最基本的希望有用-Wiener filtering of the ECG signal de-noising, the most basic hope useful
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Decoupling, restore the original signal, ECG data and includes source code written in MATLAB, The signal spectral analysis and filtering.
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ECG data and includes source code written in MATLAB, Virtual power wireless sensor network coverage, The signal spectral analysis and filtering.
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MIT-ECG基线信号滤波算法,有效抑制基线漂移(MIT-ECG baseline signal filtering algorithm, which effectively inhibits baseline drift)
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心电信号多种滤波方式比较;中值滤波、自适应滤波等等(Comparison of various filtering methods of ECG signal, such as median filtering, adaptive filtering and so on)
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