Audio Detector posted on December 10, 2008 by TehnikService | Leave your thoughts This circuit is for detecting any audio signal with justable noise offset. It could be used to generate a radio mute signal eg. from a PDA. The circuit is consisting of: – Input impedance – Signal amplifier – Rectifier – Justable comparator (Noise offset). Download: Schematic Source: KKelektronik-4u Posted in Circuit | Tagged: Audio Circuit « AVR Digital Voltmeter USB AVR Programmer STK500 » Leave a Reply Cancel reply Comment Name * Email * Website This site uses Akismet to reduce spam. Learn how your comment data is processed.