Category: Audio

When it comes to recording audio in wildlife or nature, you require something with a small form factor that does not harm the environment. There are several wildlife species that produce noise in ultrasonic frequencies like bats, moths, etc. Here comes the name for the credit card-sized...

The circuit presented here is a 3W stereo audio amplifier with memory UP/DOWN volume control. The project is based on PAM8408 IC from Diode Incorp which is a filter-less class-D amplifier with high SNR and Differential input which helps eliminate noise. Two tactile switches are provided...

This audio-balanced line driver project enables to drive hundreds of feet in length of cables without becoming unstable The project is based on the THAT1646 chip, which is a new generation monolithic differential line driver that offers improved performance over conventional...

This is a headphone amplifier project for audio digital-to-analog converters (DACs) with differential voltage outputs. This circuit converts the differential voltage output of the DAC to a single-ended, ground-referenced signal and provides the additional current necessary for...

Remember those good old days when everyone had those giant sound systems in their living room? Besides the inconvenience of the CDs, the sound experience was extremely fun, and they're always was a small star in the show: the small screen with the VU animations. Unfortunately, they fell...

Did you ever make a project and wanted to output a sound that was more than just a beep? Or maybe you wanted to play a long song on repeat, such as an audio alert for when something is not working on a factory, or just to annoy your friends, your choice. An Audio Programmable Indicator...

For a few years now, earbuds have been part of pop culture. It is slowly phasing out the earpiece and headphones. Most people make use of them because of the troubles associated with wired ear accessories, while others use it as a cool fashion accessory. Regardless of the reason you use...

This is an “Audio VU Meter” or “Sound Level Meter”, it is a general-purpose bar-graph Audio VU meter designed for fun projects. All you need is to hook up one wire to the output of the audio amplifier’s speaker pin along with GND and see the magic. The response of the circuit...