I have used electret microphone and its output connected to 2.2k pullup resistor with vcc3.3V and series 10uF Alu.El. Capacitor than its connected to CPU MIC input channel.
It has sensed 5 meters voice also, so i received unwanted noise in another end (PC side). But my requirement voice to be sense maximum 1 meter only in Mic..
How to reduce mic sensing level? Pls suggest me
Application: Call Box