摘要
心音是心脏及心血管系统机械运动状况的反映,其中包含着心脏各个部分本身及相互之间作用的生理和病理信息。随着数字信号处理技术的迅速发展,使心脏疾病的诊断实现自动化成为可能,而采用最大熵法对心音进行时频分析,可以对非平稳信号给出一个充分的时频分析结果。
Heart sound is the reflection of heart and the mechanical movement of cardiovascular system, which includes various parts of the heart and the physiological and pathological information of mutual reaction of the heart itself. The paper intends to find out a method that is not dependent on ECG （Electrocardiogram） simultaneously and that can pick up the feature of the second heart by using digital signal processing.
出处
《云南电大学报》
2008年第4期87-90,共4页
Journal of Yunnan Rty University
基金
云南省自然科学基金资助项目(2001C0004M)
关键词
心音
时频分析
第二心音
短时最大熵(Burg算法)
heart sound
time - frequency analysis
second heart sound
short- term maximum entropy （Burg algorithm）
