Introduction: Our ECE 476 Spring 2002 final project is a musical synthesizer that mimics the sounds produced by a piano and a clarinet. We wanted to create a device that could produce different musical signals by direct digital synthesis. Using Fourier analysis of the signals, we were able to imitate the sounds from different musical […]
Digital Music Synthesizer Using Atmel 90s8515 chip Read More »
Introduction In the recent years, the MPEG Layer III (MP3) music compression format has become an extremely popular choice for digital audio compression. Its high compression ratio, and near CD quality sound make it a logical choice for storing and distributing music – especially over the internet, where space and bandwidth are important considerations. As
EE 476 Final Project Portable MP3 Player Read More »
Introduction The goal of this project is to design an algorithm for a real-time digital guitar tuner and implement it using an Atmel AT90S8535 microcontroller. Each of the six strings of a guitar has a unique fundamental frequency, and our goal is to measure this frequency and compare it to the correct frequency. This project
Design of a REE476 Final Project: eal-Time Digital Guitar Tuner Read More »
Introduction Every group wants their final project to be something that will be remembered long after they’re gone. Some do highly sophisticated and complex projects that entail upwards of a hundred hours to complete. Yet others go out of their way to develop something ‘cool’ and ‘fun’. Luke and I decided that we wanted to
Sine Wave Synthesizer Read More »
Introduction The WhereAVR is a small, lightweight, low-power, and low-cost APRS tracker with a full compliment of analog and digital I/O, as well as the ability to decode ax.25 packets. This allows for the reception of remote commands without the need for a “real” TNC. It is designed to hook directly to the speaker and
The WhereAVR using ATmega8 microcontroller Read More »
An active noise canceler to eliminate the 60 Hz noise found in electrical signals due to AC power-line contamination. 60 Hz noise is frustrating for anyone trying to make sensitive measurements of low voltage processes (eg. Electrocardiogram measurements), record audio from electrical instruments (eg. guitar “hum”), or use electronic systems near an AC transformer. The
Adaptive Cancellation of Periodic 60 Hz Noise using ATmega32 Read More »
History I decided to do this project for several reasons: Frst I like music, second I have a huge collection of MP3, and third I wanted to be able to play them anytime in my living room. I began the project with one major restriction. The printed circuit board of MP3 player MUST be single
MP3 Player using ATMega128 microcontroller Read More »
This is an evaluation use of a small graphics LCD module. Last summer, SG12232C graphic LCD module has been sold sold for 1500 Yens from Akizuki Denshi and I bought it. However I could not find good application for the LCD module and it was going to go to junk box 🙂 so that I
Audio Spectrum Monitor using S1D15200 microcontroller Read More »
In 2006, I took part in an electronic demo competition on a Dutch forum (see this topic). Because computer demos like they used to have on old machines like the Amiga or Commodore are harldy made anymore since hardware has come such a long way, someone had the idea to do the same, but on
AVR mod player using ATmega325 microcontroller Read More »
Downloads Download the AVRStudio assembly source vlflo13041105A.asm (html format) Download the AVRStudio Hex file vlflo13041105A.hex (html format) Photo of completed receiver. Its pocket sized, but not intended to be used that way because the antenna is a highly directional ferrite loopstick. Its only a matter of luck that there was room for all the components
A Superhet/Direct Conversion AM receiver for 181.818 kHz using Attiny2313 Read More »
