Post on 03-Jan-2016
transcript
“Magic Rainbow” Music Visualizer
The Colors of Sound GroupJamaal Merriweather
Justin McDevittWeston Bell
Robert A. Hicks II
Georgia Institute of TechnologyECE 4007/RP1 (em2)
Senior Design Project – PDR Presentation
Project Overview
• What: LED music spectral intensity visualization system.
• Why: Enhance musical experience for the hearing impaired.
• Who: Individuals with hearing disabilities.
• Prototype Equipment Cost: $795.62.
Design Objectives/GoalsDesign Objective Verification/Implementation
Portability Weighs under 20 lbs and maximum enclosure size 20” x 20” x 6”
Visual response to audio input LED Zones indicate intensity/power levels through LED brightness or quantity of LEDs illuminated.
Versatility USB compatible; 2GB (or greater) of system memory; Simulink and drivers installed
Low Power Requirements Maximum: 2 W (DAQ Digital Power Supply)Maximum: 25 W (External Power Supply)
Software Problems & Issues
• Real Time vs. Simulation Time.• Post-FFT Sampling & Form Conversion Timing.• Serial vs. PWM Communication Modes.• DAQ recognition in Simulink.• (Future): Tempo Extraction
Hardware Problems & Issues
• Total Power draw for LED zones.• Brightness and low viewing angle of LEDs.• Optimal Circuit layout for Soldiered LED zones.• Exact enclosure Design.
Software Acceptance Testing
• Verified Spectrum Processing with Simulink model.• Tested DAQ recognition in Simulink.• Tested DAQ device’s USB compatibility on different
machines.• Achieved real-time/simulation-time synchronization
with low-level Simulink model.
Hardware Acceptance Testing
• Successfully Constructed Zone 1 on bread board • Verified ability to adjust Duty Cycle.• Manually controlled IC using DAQ card.
Future Work
• Interface DAQ with Simulink Model• Create MATLAB function to generate PWM
control• Interface DAQ with LED Drivers• Achieve 1 working LED zone with LED Driver
and DAQ• Achieve all working LED zones• Assemble chassis for final prototype