论文部分内容阅读
本文提供了几种可用于带通电路中的简单实用的模拟消噪电路,利用其非线性转移特性,消除混在信号中的背景噪声。这一技术在ST-1电子听诊器的设计中被采用,并取得了良好的效果。
This article provides several simple and practical analog noise canceling circuits that can be used in bandpass circuits to take advantage of their non-linear transfer characteristics to eliminate background noise mixed in the signal. This technique was adopted in the design of the ST-1 electronic stethoscope and achieved good results.