Electret Microphone Circuit Arduino

The sparkfun electret microphone breakout couples an electret microphone 100hz 10khz with a 60x mic preamplifier to amplify the sounds of voice claps door knocks or any sounds loud enough to be picked up by a microcontroller s analog to digital converter.

Electret microphone circuit arduino.

The electret microphone reads amplitude not volume. This fully assembled and tested board comes with a 20 20khz electret microphone soldered on. The output signal again comes from pin 5 of the lm386 ic. The complete circuit is shown below.

An electret microphone is a device that uses two conducting plates to capture sound waves and translate them into electrical waves. Adafruit industries unique fun diy electronics and kits electret microphone amplifier max9814 with auto gain control id. As stated the microphone needs power in order to operate. For the amplification we use the maxim max9814 a specialty chip that is.

This fully assembled and tested board comes with a 20hz to 20khz electret microphone soldered on. The 1063 is an electret microphone amplifier with adjustable gain. For the amplification we use the maxim max4466 an op amp specifically designed for this delicate task. Electret microphone amplifier simple arduino example to print out noise level values using a microphone adafruit max4466.

Now that we know all the components we are going to use we will go over the circuit schematic for the electret microphone shown below. The circuit starts with the electret microphone. How to connect the microphone circuit to an arduino. The negative terminal connects to gnd on the arduino.

The amplifier has excellent power supply noise rejection so this amplifier sounds really good and isn t nearly as noisy or. An electret microphone is an omnidirectional microphone which means it can capture sound from all directions. This electret microphone in particular needs 2 2v of power in order to. We will connect it in our case to a0 of the analog terminal.