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Audio to MIDI Converter Team Obama

Audio to MIDI Converter Team Obama. Advisor: Dr. William Hunt Adnan Burkic Sean Earley Jon Kump Brian Tyson Georgia Institute of Technology 3/16/2010. Project Overview. Audio to MIDI converter plug-in designed for guitar Guitar can control any MIDI device in real-time

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Audio to MIDI Converter Team Obama

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  1. Audio to MIDI ConverterTeam Obama Advisor: Dr. William Hunt Adnan Burkic Sean Earley Jon Kump Brian Tyson Georgia Institute of Technology 3/16/2010

  2. Project Overview • Audio to MIDI converter plug-in designed for guitar • Guitar can control any MIDI device in real-time • Software will be targeted toward guitarists and record producers • Software solution requiring no hardware • Software will be approximately $50, cheaper than competing hardware products

  3. Important acronyms • What is MIDI? • Musical Instrument Digital Interface •  Industry standard for electronic music devices •  What is a VST Plug-in? • Virtual Studio Technology • Requires host application • Industry standard for music related plug-ins

  4. Design Goals • VST plug-in compatible with any third-party software •  Low latency to allow real time performance •  Fast and accurate pitch detection(monophonic) •  Pitch Bend

  5. Design Illustration • Interface mockup

  6. Graphical User Interface

  7. Design Challenges • How to code a VST? • How to detect pitch? • How to output MIDI?

  8. SynthMaker

  9. AMDF Pitch Detection • Average Magnitude Difference Function • Time-Domain • Fast and simple • Not capable of accurate polyphonic pitch detection 

  10. AMDF Theory Input, Delayed Input              Input+Delayed Input A4 (2/440) G4 (2/392) E4 (2/330) (Delay in Seconds)

  11. MIDIEvent block Currently researching the structure of the MIDI protocol Final step of the project MIDI Output

  12. Acceptance Testing • Latency needs to be perceived as real time • Can be measured using host program • Needs to be less than 20ms • Pitch detection accuracy • Ensure detected pitch matches played pitch for all notes on guitar

  13. Scheduled Milestones • Completed  • VST audio input & MIDI output interface • Peak detection • Audio level normalization • April 2nd - Pitch detection Completion  • April 16th - MIDI event generation • May 6th - Final Presentation and Demonstration

  14. Cost Analysis Product Description Quantity Unit Price Price SynthMaker Standard License 1 $255 $255 Estimated Labor 650 hrs $30 $19,500 Misc. Cables/Hardware for Test Purposes 1 $125 $125 Product Cost Total $19,880

  15. Future Developments • Pitch Bend • Bass Guitar • Alternate Tunings

  16. Questions? Challenges •  VST • Pitch Detetion • MIDI Output

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