Turner I, English M, Vincent R
School of Engineering, University of Sussex, Brighton, UK.
Med Biol Eng Comput. 1995 Nov;33(6):757-61. doi: 10.1007/BF02523006.
Ventricular late potentials are small ECG components that have significant diagnostic importance. Temporal averaging is used to recover these signals from high levels of background noise, but is not the optimum approach. A new form of hybrid time-frequency adaptive filtering is introduced that is based on signal division into a series of frequency bands. This technique is able to process the averaged data further and to reduce significantly the noise levels beyond that achieved by simple averaging. Examples of the processing are shown and its applicability is discussed.
心室晚电位是具有重要诊断意义的小心电图成分。时间平均法用于从高水平背景噪声中恢复这些信号，但并非最佳方法。本文介绍了一种基于将信号划分为一系列频带的新型混合时频自适应滤波方法。该技术能够进一步处理平均后的数据，并显著降低噪声水平，其降噪效果优于简单平均法。文中展示了处理示例并讨论了其适用性。
