ABSTRACT Heart sound is one of the most important physiological signal in human body, the history of cardiac auscultation is more than 180 years.
心音是人体最重要的生理信号之一，心音听诊的历史已有180多年。
2
Heart sound is one of the most important physiological signal in human body, the history of cardiac auscultation is more than 180 years.
心音是人体最重要的生理信号之一，心音听诊的历史已有180多年。
3
Heart sound auscultation is an important way to check the integrity of cardiac function, and the patients with heart diseases can be probably diagnosed by means of the stethoscope.