Overview | Adafruit Microphone Amplifier Breakout | Adafruit Learning System
Electret Microphone Amplifier
How to connect an electret microphone to a microcontroller so that the LED connected at the output of the microcontroller glows when a voice input is provided to the mic - Quora
High Quality Electret Microphone pre-amplifier – Arduino, ESP8266, ESP32 & Raspberry Pi stuff
Next step – op amp | Electron Pi
Condenser mic as a sound sensor - Sensors - Arduino Forum
How to Use Microphones on the Arduino - Circuit Basics