Electronics
Audio Signal Generators and Filters
Create Custom Sounds and Filter Audio
Want to create interesting sounds or test your audio gear? Sine, square, and sawtooth wave generators are essential circuits in synthesizers and electronic test equipment. Audio filters can be used to set frequency cutoffs or make sound effects. Ready to dive in? Check out the tutorials below!
How to Build an Audio Mixer
Learn how to build a three channel stereo audio mixer with this step by step tutorial complete with schematics and in-depth explanations.
How to Build a Square Wave Generator
Learn how to make a square wave signal generator. With step by step instructions on how to calculate and change the frequency of the square wave.
How to Build Audio Filter Circuits
Learn how to build four different audio filters – high-pass, low-pass, band-pass, and notch filters. Detailed instructions and schematics included.
How to Build a Pulse Width Modulation Signal Generator
Learn how pulse width modulation works and how to build a pulse width modulation signal generator with the 555 timer. Detailed instructions and schematics included.
How to Build a Sawtooth and Triangle Wave Generator
Learn how to build a sawtooth wave generator and a triangle wave generator in this complete step by step tutorial.
How to Build a Sine Wave Generator
Learn how to build a sine wave generator and the pros and cons of three different sine wave generator circuits with this in-depth guide.
Build an Arduino Sine Wave Generator
How to build a low frequency sine wave generator using the Arduino and a PISO shift register.