1. Nick Kwolek Martin Pendergast Stephen Edwards David Duemler

2. Outline Project Overview Block Diagram Project Specific Success Criteria Safety Analysis

3. Project Overview A music composition and instruction tool Records audio of a musical instrument and creates MIDI sheet music of the audio Files transferred via SD card

5. Project-Specific Success Criteria An ability to sample an audio signal with appropriate input filtering. An ability to transform an audio signal to the frequency domain in finite length sample windows. An ability to determine the note names and durations based on the frequency spectrum and an internal metronome. An ability to generate a musical score stored in a MIDI file, based on the analyzed data. An ability to transfer the completed music file to a removable storage medium.

6. Areas of interest dsPIC33E Power supply Analog UI

7. Criticality levels High – Injury to user or worse Medium – Device does not function or is damaged Very little that can fail without disabling device Low – User inconvenience, diminished usability

8. Power Supply Failure Modes Power supply overheat or fire (Medium to High) Caused by defect from wall supply (receive 110 V AC) or short circuit on board Power supply sources inappropriate voltage (Medium to High) Causes part failure downstream, may ultimately have similar results to power supply overheat Power supply does not source power (Medium) Caused by defect from wall supply (receive 0 V), previous damage, or wear-out

9. Analog Component Failure Modes Component overheat or fire (Medium to High) Caused by over-voltage from faulty supply or shorts in related components Analog circuit does not pass audio data (Medium) Analog circuit introduces noise (Low)

10. DSP Failure Modes SPI failure (Medium) Prevents communication with ADC, SD card Digital IO pins fail high/low (Medium) Prevents communication with LCD, use of buttons Quadrature Encoder failure (Medium) Prevents use of rotary pulse generator Supply voltage too high/low (Medium)

11. UI Failure Modes LCD over/under-voltage (Low/Medium) LCD non-responsive (Medium) Button, RPG sticks to one value (Medium) Microphone jack broken (Medium)

12. Questions?