05/02/05

Our project is a digital voice recorder with distortion abilities that stores multiple tracks onto a DataFlash memory card.

We programmed an Atmel Mega32 microcontroller to sample a microphone, and store the samples into an external memory source.  We give the user the option of recording multiple tracks, and playing back any track at any time.  The user interface is clearly displayed on an LCD.  As an interesting feature we added the ability to change the frequency of one’s voice.  This we added to create an interesting effect.  We chose this project because it utilized and expanded upon many of topics taught in ECE 476.  It also involved the many disciplines within electrical engineering, including embedded systems programming, analog design, and digital signal processing.