design

Adaptive Cancellation

Adaptive Cancellation of Periodic 60 Hz Noise using ATmega32

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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 […]

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EE476 Final Project (1)

Design of a REE476 Final Project: eal-Time Digital Guitar Tuner Using Atmega

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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

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Project Portable MP3 Player

EE 476 Final Project Portable MP3 Player Using Atmega

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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

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Digital Music

Digital Music Synthesizer Using Atmel 90s8515 chip

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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

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MP3 Player

MP3 Player Using Atmel Mega103L

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Introduction Using MPEG Layer-3 compression, 40 MByte audio files have been compressed to approximately 3.5 MBytes. With the wide availability of MP3 files via the Internet, portable MP3 players have become increasingly popular. MP3 players are currently available that utilize either Compact Discs, SmartMedia, Compact Flash, or a hard-drive as their storage medium. Our interest

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