摘要
本文提出利用关联维数来定量地对心音信号的复杂程度进行描述。对四种状态下的心音信号进行关联维数计算,结果表明:心音信号为确定的非线性动力系统并且不同的病变心音关联维数有显著区别,因此关联维数可以作为心音识别的重要依据,对心音的检测以及心血管疾病的诊断具有重要的意义。
The correlation dimension is introduced to characterize quantitatively the complexity of heart sound. Four different types of conditional heart sounds are discussed by the tool of correlation dimension. The result shows that the heart sound is produced by a deterministic and nonlinear dynamic system and correlation dimension is able to significantly distinguish different heart sounds. Correlation dimension of heart sound can play an important role in clinical diagnosis.
出处
《现代科学仪器》
2007年第2期56-59,共4页
Modern Scientific Instruments
关键词
心音信号
关联维数
非线性动力系统
Heart sound
correlation dimension
nonlinear dynamic system
