A notebook computer based heart sound analysis instrument, consisting of phonocardiographic sensor, heart sound signal preprocessing box, notebook computer, printer, speakers, and heart sound signal processing software is introduced. 基于笔记本计算机的心音分析仪由心音传感器、心音信号预处理盒、笔记本计算机、打印机、音箱和心音信号处理软件组成。
Association between phonocardiographic third and fourth heart sounds and objective measures of left ventricular function 心音图第三、四心音与左心室功能客观测值的关系