ECE 477 Digital Systems Senior Design Project Rev 8/09 s4

ECE 477 Digital Systems Senior Design Project Rev 8/09

Homework 2: Design Project Proposal

Team Code Name: Bueller’s Lab Day Off Group No. 14

Team Members (#1 is Team Leader):

#1: Faris Issa Areas of Expertise: Hardware

#2: Prateek Singhal Areas of Expertise: Software

#3: Sean King Areas of Expertise: Signal Processing / Bad Jokes

#4: David Record Areas of Expertise: Software/Packaging

Project Abstract:

This device captures and analyzes guitar music and converts it into tabbed music notation. The device will allow amateur guitar players to obtain tab music for their own improvisations to replay at a later time. The device can also be used to record audio from a recording of professional guitar players in order to obtain tab music for popular songs. The music can be viewed via an LCD screen and then exported to digital media for transfer to a PC.

Tabbed Music Example:

E|-11------11------11----9------9------9----9------9------9---- B|----11------11------11---11------11------11---11------11------11 G|------12------12------10------10------10------10------D|------A|------E|------

Design/Functionality Overview:

Our proposed project will provide transcription of music in tab format for guitar players. Both amateurs and advanced users will benefit from the ability to obtain tabbed music. The device will interface with a microphone or audio jack. This analog signal will be converted to a frequency via DSP and stored until the recording is finished. Once the recording is complete a separate microprocessor will match the different frequencies to those of guitar notes. The notes will be written to a file for storage. The user will be able to interact via an LCD screen in order to view the tab music and can then choose to either send the music to digital media or delete it.

Since there is a significant amount of processing necessary to analyze music and large storage requirements in order to store the audio, an ARM processor may be necessary. In order to allow the user to view the tabbed music and review it while still on the device a decently sized LCD ECE 477 Digital Systems Senior Design Project Rev 8/09 screen will be used. These two main components will cause the device to be somewhat expensive. Preliminary calculations show the device should be produced for less than three hundred dollars.

Faris will be in charge of converting the music into a tabbed music file and leading the PCB layout. Prateek will work on the user interface and LCD interfacing. Sean will be in charge of acquiring and converting the input signal into musical notes. David will be in charge of interfacing with the digital media and packaging the device.

Project-Specific Success Criteria: 1. An ability to capture sound from a guitar and convert it to frequency domain 2. An ability to convert the frequency domain data into guitar notes 3. An ability to convert guitar notes into a text file for viewing and export 4. An ability to view tabbed guitar music via LCD screen 5. An ability to export the tabbed guitar music to removable digital media

Block Diagram:

Analog Input Amplifier ADC FFT

LCD Screen Microcontroller

Removable Media

Division of Labor: Design Component Homework Professional Component Homework 4-Packaging Design and Specs David 3-Design Constraint Analysis/Parts List Prateek 5-Hardware Narrative and Prelim Schematic Sean 10-Patent Liability Analysis David 6-PCB Narrative and Prelim Layout Faris 11-Reliability and Safety Analysis Sean 9-Software Design Narrative Prateek 12-Social/Political/Environmental Analysis Faris