The Metronome Elizabeth Nguyen Microcomputer Systems 1 Project April 28, 2007

Background Information A metronome is an instrument used by musicians to keep a steady tempo. A metronome is an instrument used by musicians to keep a steady tempo. Tempo is defined as the number of beats per minute. Tempo is defined as the number of beats per minute. There are approximately 25 distinct tempos that are commonly used in music today. There are approximately 25 distinct tempos that are commonly used in music today.

Objective To create a metronome using the Blackfin Processor To create a metronome using the Blackfin Processor To play music that corresponds to the selected tempo To play music that corresponds to the selected tempo

Solution 9 tempos will be represented. 9 tempos will be represented. LEDs will visually show the beats. LEDs will visually show the beats. Buttons (singularly or a combination of two) will represent these tempos. Buttons (singularly or a combination of two) will represent these tempos. MIDIs will be played to audibly correspond to the tempos selected. MIDIs will be played to audibly correspond to the tempos selected.

List of Tempos and Combinations # Times PF8 is Pressed PF9PF10PF11 0LargoAndanteVivace 1LarghettoModeratoPresto 2AdagioAllegroPrestissimo

Implementation

Implementation

Results Works as it should Works as it should Only has 1 second representation of each song Only has 1 second representation of each song

Concluding Remarks Most difficult part – working with audio Most difficult part – working with audio Figuring out how many songs will fit on the Blackfin Figuring out how many songs will fit on the Blackfin Creating an accurate LED pattern to fit tempo of the midi Creating an accurate LED pattern to fit tempo of the midi Figuring out how to load music onto Blackfin Figuring out how to load music onto Blackfin Improvements – using a low pass filter to create the tempo so a set pattern in the LEDs will not be required to represent the tempo Improvements – using a low pass filter to create the tempo so a set pattern in the LEDs will not be required to represent the tempo

Questions ?