In this article, we’ll look at a fairly straightforward circuit that enables a robot or other device to detect sound.
In this article, we’ll look at a fairly straightforward circuit that enables a robot or other device to detect sound.
Learn about the basics of audio electronics, which convert sound signals into electrical signals, process these…
Learn about the basics of audio electronics, which convert sound signals into electrical signals, process these electrical signals, and convert them back into sound.
Harmonic distortion can be introduced to audio amplifiers from many sources but reduced to levels below the threshold of…
Harmonic distortion can be introduced to audio amplifiers from many sources but reduced to levels below the threshold of human hearing.
THD of an audio system can be easily measured, but because the ultimate output of an audio system is a sound for humans…
THD of an audio system can be easily measured, but because the ultimate output of an audio system is a sound for humans to hear, human perception plays a role in determining what to do about THD.
Nowhere to hide presents this holiday season? No problem! This alarm will sound anytime a loved one tries to get a sneak…
Nowhere to hide presents this holiday season? No problem! This alarm will sound anytime a loved one tries to get a sneak peek at his or her surprise.
In part 2 of the LED saber project, we'll assemble the power and audio systems.
In part 2 of the LED saber project, we'll assemble the power and audio systems.
This article describes the bridge-amplifier configuration and explains why it’s especially handy when you don’t have…
This article describes the bridge-amplifier configuration and explains why it’s especially handy when you don’t have a negative voltage supply.
In this article, we will look at two variations on the basic BJT current-buffering circuit.
In this article, we will look at two variations on the basic BJT current-buffering circuit.
Use negative feedback to increase your amplifier’s signal-to-noise ratio, reduce its nonlinear distortion, and improve…
Use negative feedback to increase your amplifier’s signal-to-noise ratio, reduce its nonlinear distortion, and improve its input- and output-impedance characteristics.
This analog design allows your LEDs to respond to your music. Just plug your music source into this which sends a channel…
This analog design allows your LEDs to respond to your music. Just plug your music source into this which sends a channel to your sound system and some LEDs.
Use a laser and a photo resistor to build a laser based point-to-point communication system. The best part? It's under $10.
Use a laser and a photo resistor to build a laser based point-to-point communication system. The best part? It's under $10.
Part 2 in the “How to Make an EFM8-Based Sound Synthesizer” series.
Part 2 in the “How to Make an EFM8-Based Sound Synthesizer” series.
You and your friends are planning the greatest party your hometown has ever seen. Just one problem: you don't have a…
You and your friends are planning the greatest party your hometown has ever seen. Just one problem: you don't have a karaoke system. What's a great party with no karaoke? We're about to fix that. All you need are a few potentiometers and an op-amp.
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