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 ...

Fig. 1: Diagrams from Wente’s 1916 patent application show the condenser microphone in cutaway view. Diaphragm (#6), which is grounded, is stretched only 5/10000th of an inch from the backplate (#7), ...

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 ...

James West is the co-inventor of the electret microphone used in telephones, sound recording devices, hearing aids, and other products. A research professor of electrical and computer engineering and ...

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, ...

In a late-November post, I discussed various microphone options available (I quote) “in terms of options for you to consider using in your next virtual work meetings and/or off-hours jam sessions.” At ...

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 ...

The Sony ECM-778 is a high-resolution shotgun microphone that can be used in many different ways and for many different purposes. Whether mounted on a boom or a camera, this ultracompact ...

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 ...