Subband-Adaptive Shrinkage for Denoising of ECG Signals
Subband-Adaptive Shrinkage for Denoising of ECG Signals
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用于 ECG 信号去噪的子带自适应收缩
DOI：
10.1155/asp/2006/81236
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发表时间：
2006
影响因子：
1.9
通讯作者：
N. Kumaravel
中科院分区：
文献类型：
--
作者：
S. Poornachandra;N. Kumaravel
本文描述了Donoho和Johnstone(1994)提出的子带相关自适应收缩函数，它推广了硬收缩和软收缩。提出了一类具有连续导数的收缩函数，并用MatLab对加入标准高斯噪声的正常和异常心电信号进行了仿真测试。与其他现有的收缩函数相比，恢复的信号在视觉上是令人愉快的。讨论了所提出的收缩函数在去噪和数据压缩中的应用。
This paper describes subband dependent adaptive shrinkage function that generalizes hard and soft shrinkages proposed by Donoho and Johnstone (1994). The proposed new class of shrinkage function has continuous derivative, which has been simulated and tested with normal and abnormal ECG signals with added standard Gaussian noise using MATLAB. The recovered signal is visually pleasant compared with other existing shrinkage functions. The implication of the proposed shrinkage function in denoising and data compression is discussed.