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.

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 ...

There are different kinds of microphones, but they all do about the same thing, which is to turn acoustic sounds into electronic signals that can be amplified, modified, or recorded. When you speak ...

Here is an Electret Condenser Microphone – ECM preamplifier circuit based on ultra low noise BC650C transistors. Due to difficulty of finding BC650C, instead of them, as you can see in the schematic, ...

Any modern phone call placed, voice recording captured, karaoke song belted or conversation amplified via hearing aid would not be possible without James West. West, now a professor of electrical and ...

The “cube” in this tale was the sound booth at Springfield Assembly of God Church (Springfield, VT), where I'm the sound man. We have an electret microphone hanging from the sanctuary ceiling that ...

Microphones can be found just about everywhere nowadays. Most people reading this article will have a cell phone in their pocket which uses a microphone to transmit an audio signal to other phones all ...

That old upright piano still sounds great, and now it can easily have its own special effects. [DangerousTim] added LED strips which change color when he tickles the ivories. The strips are applied ...