| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic stethoscope suitable for auscultating a cardiac sound, a cardiac noise, and a respiratory sound of a human body without capturing ambient noise.SOLUTION: An electronic stethoscope for amplifying and listening to a vibration sound in an audible range generated from the inside of a human body by being brought into contact with a human body surface is composed of a chest piece, a body part, and an earphone part including a vibrator. The body part includes a microphone arranged at a sound collection part of the chest piece, a signal processing circuit for converting a sound reception signal from the microphone to an electric signal and amplifying it, a drive circuit for driving the vibrator, and a power supply part for driving the microphone, the signal processing circuit, and the drive circuit.SELECTED DRAWING: Figure 1 |
