1. Laser Harp
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2. Group Members Peter Crinklaw : MIDI Signal Generator
Qiushi Jiang: Synthesizer
Edwin Rodriguez: Synthesizer

3. Functionality Its a harp with lasers for strings
Breaking lasers generates MIDI signals
Synthesizer process the MIDI signal and generates sound

4. Motivation Great for live performances It’s easy to play
It can be interfaced with any standard MIDI synthesizer on the market

5. Design - Hardware

6. VHDL Custom Components
Design - Software
Micro C II
(Passes the data to
Audio Codec)
Audio Data
Audio Data
VHDL Custom Components
Audio Codec On DE2 board

7. Design - Components MIDI Signal Generator Synthesizer
Controller reading laser inputs
PISO Shift Register
Synthesizer
MIDI message reader
Dispatcher
Sound Engine (Oscillators)
Envelope

8. Design - Challenges Structuring project for collaboration
Investigating details on MIDI specs
Figuring out how a synthesizer works

9. Design - Calculations Time to process a laser strum
MIDI bitrate: bits/s
MIDI message length: 30 bits
Total time: 30 / = ~1ms

10. Code Example This code segment will generate a MIDI signal vector
It will push the vector into a single data stream

11. Test Plan
Make a testbench for the component and run Model-SIM to simulate its operation.

12. Test Plan

13. Test Plan Hardware unit test 1 laser and 1 photo-sensor 5mV Laser

14. Optional Features Octave shift with IR sensor Smart Scales
Automatically map the laser beam to a specified music scale
Additional controller to control synthesizer settings in real time.

15. Questions