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本文介绍一种新型电子听诊器。利用心电信号的 ＱＲＳ波控制电子模拟开关，有选择地传导或删除心动周期中某段时间的心音信号，能清晰地区分和辨认心脏听诊内容，有助于临床教学。并介绍有关线路的设计。
This article describes a new type of electronic stethoscope. Using the QRS wave control electronic signal of the ECG signal to selectively conduct or delete the heart sound signal during a certain period of the cardiac cycle, the heart auscultation content can be clearly distinguished and identified, which is helpful for clinical teaching. And introduce the design of the line.