ECE 477 DESIGN REVIEW TEAM 14  SPRING 2010

Project Overview  Target Audience: Amateur Musicians  Obtain a “Guitar Tab” format of music  View Tabs on LCD and export via SD Card  SD Card contains.txt file to be viewed/shared/printed

Outline  Project overview  Project-specific success criteria  Block diagram  Component selection rationale  Packaging design  Schematic and theory of operation  PCB layout  Software design/development status  Project completion timeline  Questions / discussion

Project-Specific Success Criteria  An ability to capture sound from a guitar and perform an FFT on the samples  An ability to convert an arbitrary set of samples into a set of guitar notes  An ability to export tabbed guitar music to a removable digital media text file.  An ability to interact with the user via LCD Screen and Pushbuttons  Allow exportation of recorded song as MIDI OR An ability to interactively guide guitar tuning

Block Diagram

Component Selection Rationale  μ C: SHARC  DSP with FFT Capabilities  Interface w/ peripherals  Cost  ADC: TLV2541  12 Bit resolution  Sufficient Sample Rate  SPI

Component Selection Rationale  Filter: MAX7404  Low Pass  Adjustable Freq. Corner  LCD: CFAG24064A-FTI-TZ  8 Rows  Large display (7” x 2.56”)  RAM: CY7C1069AV33  10 ns Parallel interface  2 MB SRAM

Packaging Design

Schematic/Theory of Operation OVERALL

Schematic/Theory of Operation LCD

Schematic/Theory of Operation POWER

Schematic/Theory of Operation AUDIO INPUT

Schematic/Theory of Operation SRAM

PCB Layout

Software Design/Development Status Accomplished so far:  Sound analysis proof of concept (MATLAB)  Preliminary work with LCD and SD Card Left for Completion:  Port Sound Analysis to μ C  Interface with Peripherals  Implement Pushbutton controls and menus

Project Completion Timeline WEEK #: END DATE GOALS FOR END OF WEEK WEEK 9: MARCH 12 th Final PCB and Schematic, Proof of Parts WEEK 10: MARCH 19 th Matlab Note Analysis Complete, Homeworks Revised WEEK 11: MARCH 26 th Software Design Narrative WEEK 12: APRIL 2 nd Patent Liability, Packaging Prototype Complete WEEK 13: APRIL 9 th Reliability and Safety, Peripherals Working WEEK 14: APRIL 16 th Ethical and Safety Analysis, Finish Note Analysis on Micro WEEK 15: APRIL 23 rd User Manual, Live Testing WEEK 16: APRIL 30 th Software and Hardware Working, Poster Complete WEEK 17: MAY 3 rd Final Report

QUESTIONS / DISCUSSION