Design of heart sound processing analog circuit based on the electret capacitor microphone
- VernacularTitle:基于驻极体电容传声器的心音模拟处理电路的设计
- Author:
Xiaosheng QUE
;
Hao YANG
;
Wei HE
;
Chengying WEI
- Publication Type:Journal Article
- Keywords:
heart sound;
analog circuit;
electret capacitor microphone
- From:
Chinese Medical Equipment Journal
1989;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
This paper designs a heart sound processing analog circuit, in which the amplification circuit, the filter circuit and the lifting of electrical level circuit are involved. It also gives a safety design problem analysis using an electret capacitor microphone to pick-up the heart sound signals. It is proved that the circuit is reliable and effective.
