摘要
文章分析音频检测电路的原理,音频信号通过该检测电路,将触发输出低电平,使系统自动切换到AUX(辅助输入)信号源进行播放。
In this paper,the principle of audio signal detection circuit is analyzed.Through this detection circuit audio signal will trigger and output low level of voltage,make the system automatically switch to AUX（Auxiliary） input signal sources and play audio signal.
出处
《电子技术（上海）》
2011年第8期81-83,共3页
Electronic Technology
关键词
电压跟随
滤波
放大
voltage following
filtering
amplification
