Circuit Lake

Electronic Project and Circuit Collection

Audio Related Resources

Ear Trainer

October 10, 2011 By: admin Category: Audio, AVR, Microcontroller, Miscellaneous, Project No Comments →

The goal of project is to helps people develop the musical skills of perfect pitch and relative pitch. Push buttons allow the user to navigate a graphical user interface (GUI) on a liquid crystal display (LCD). In perfect pitch training mode, a note is played and the user tries to identify the note on an […]

DIY Mini IR Theremin

July 08, 2011 By: admin Category: Audio, Miscellaneous, PIC, Project No Comments →

The purpose of this project is to build a simple Theremin that can play the base notes (no sharps or flats) from one octave to another, specifically C4 to C5. Instead of using antennas, it uses infrared proximity to sense the position. The device will produce a specific pitch after IR proximity sensor detects the […]

Arduino Drum Machine

May 04, 2011 By: admin Category: Arduino, Audio, Digital, Microcontroller, Project No Comments →

The Arduino Drum Machine is MIDI groove-box features 14-track Drum-Machine Step Sequencer with 2 accent tracks and 32 steps. The project built based on Arduino and wusik software. It’s like the classic Roland TR707 but with some twists, as it actually has 32 x 1/32 or 32 x 1/64 steps. This Drum-Machine Step Sequencer project […]

Digital Subwoofer Amplifier with Feedback

January 10, 2010 By: admin Category: Audio, Digital, Microcontroller, PIC, Project No Comments →

The project used interesting approach for reducing speaker distortion and increasing bass response. A dual coil speaker driver is used but only one of the coils is connected to the power amplifier – the other is used for electromotive feedback. This method is not new, but is difficult to implement in pure analogue world because […]