It consists of a phonocardiogram sensor, a heart sound collecting and processing circuit, and a computer.

该系统由心音传感器、心音信号采集处理电路及计算机组成。

Phonocardiogram exercise testing (PCGET) is a method through applying a phonocardiograph to evaluate cardiac contractility and the cardiac reserve.

为了验明PCGET方法的可信度,作者进行了该心音图运动试验中的信噪比分析。