This post discusses how I integrated a regular microphone into an Arduino setup for some serious audio experiments. I used a prewired module which holds a MAX9814 single chip microphone amplifier with ...

When designing a microphone assembly the other day, I reached for an electret condenser microphone capsule without thinking. To be strictly accurate I ordered a pack of them, these small cylindrical ...

This is an interesting one - how to make a smart doorbell using Arduino (basically, using a simple AI model to detect the doorbell ringing sound). The system uses the Renesas RA4M1-based Arduino UNO ...

Using a speaker as a microphone is a trick old enough to have become common knowledge, but how often do you see the hack reversed? As part of a larger project to measure the acoustic power of a ...

In the Aug. 10 issue, we wrote about the centennial of condenser microphones. Let’s look more closely at electret condenser microphones. Fig. 1: The few components that make up an electret microphone.

This article originally appeared in the Feb. 8, 2017, edition of Radio World Engineering Extra and was posted on this website Feb. 9, 2017. If you like this content you should subscribe to Radio World ...