评LADT心电数据压缩方法

Comment on LADT ECG Compression Method

本文从理论和临床应用的角度分析了近期应用较多的ＬＡＤＴ心电数据压缩方法，并给出了它的一种快速实现算法。该算法避免了最近一些文献中需要采用数值方法或查表方法来解决的开方运算，使ＬＡＤＴ方法应用起来与ＳＡＰＡ方法一样简洁。虽然ＬＡＤＴ方法与其它方法相比，其数字上的误差较其它方法大。但由于它能较好地保持ＥＣＧ形状，故仍具有一定的临床应用价值。

The LADT ECG data compression method has been theoretically and clinically analyzed in this paper. A fast algorithm for implementation of LADT method is proposed. It avoids the root-square operations employed in recent literature and its realization is as easy as SAPA techniques'. The errors of LADT method may be greater than those of other methods. It is, however, still clinically valuable because it keeps the ECG waveforms very well.