摘要
在现有的人的心电信号时域频域分析工作中存在着一些问题：去干扰问题、单搏与信号平均问题、以及数据不等长、标准不一致、频谱分析窗口的选择等问题。由于这些问题的影响，导致分析结果很不一致。研究表明叠加平均去噪有一定的局限性，叠加平均可造成波形失真。
In the current works in frequency domain analysis for humans electrocardiac signals (ECS),there were some problems,such as removing interference,single beat or signal averaged,unequal length of data,nonconsistency of measuring standard,selection of window in spectral analysis,and so on.Many nonconsistency analysing results were introduced due to existece of this problems.The investigation demonstrated that signal averaged removing noise had some limitations,signal averaged could make waveform distortion.
出处
《中国医学物理学杂志》
CSCD
1999年第1期26-27,25,共3页
Chinese Journal of Medical Physics
关键词
心电图
心电信号叠加
波形失真
ECG Superposition of electrocardiac signal Waveform distortion
