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

ORAn ability to interactively guide guitar tuning

Block Diagram

Component Selection Rationale μC: SHARC 21262

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 OperationOVERALL

Schematic/Theory of OperationLCD

Schematic/Theory of OperationPOWER

Schematic/Theory of OperationAUDIO INPUT

Schematic/Theory of OperationSRAM

PCB Layout

PCB Layout

Software Design/Development StatusAccomplished so far: Sound analysis proof of concept (MATLAB) Preliminary work with LCD and SD Card

Left for Completion: Port Sound Analysis to μC Interface with Peripherals Implement Pushbutton controls and menus

Project Completion TimelineWEEK #: END DATE GOALS FOR END OF WEEKWEEK 9: MARCH 12th Final PCB and Schematic, Proof of PartsWEEK 10: MARCH 19th Matlab Note Analysis Complete, Homeworks RevisedWEEK 11: MARCH 26th Software Design NarrativeWEEK 12: APRIL 2nd Patent Liability, Packaging Prototype CompleteWEEK 13: APRIL 9th Reliability and Safety, Peripherals WorkingWEEK 14: APRIL 16th Ethical and Safety Analysis, Finish Note Analysis on MicroWEEK 15: APRIL 23rd User Manual, Live TestingWEEK 16: APRIL 30th Software and Hardware Working, Poster CompleteWEEK 17: MAY 3rd Final Report

QUESTIONS / DISCUSSIONQUESTIONS / DISCUSSION