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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 4/27/2010. 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 4/27/2010

  2. 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 Project Overview

  3. Design Overview

  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 capability • Intuitive, easy to use interface

  5. VST Compatibility • Compatible with most digital audio workstations (DAWs), but not all • DAW needs to support receiving MIDI events from VST plugin • If DAW is not supported, program can be run as stand-alone executable

  6. Latency • Difference in time DAW receives guitar note to time synthesizer plays sound • Optimally less than 20ms • Measured difference using host program

  7. Latency Measurement • Top waveform is guitar audio • Bottom waveform is synthesizer audio • Each square of bottom grid represents 20ms • By using a pixel ruler, average latency was found to be 23.8ms

  8. Pitch Detection • Each note played on guitar needs to generate correct MIDI note • Easy to verify by simply playing each note on guitar and verify correct MIDI note is output • Pitch detection was found to be accurate for every possible note on a standard tuned guitar

  9. Pitch Bend • Feature was successfully implemented • Performance varies depending on note played and degree of bend • Can be enabled or disabled as needed

  10. Graphical User Interface

  11. Demonstration Illustration

  12. Improved latency • Optimized pitch bend • Expand to more third-party software • Support for non standard tunings • Support for other instruments Marketable Changes

  13. Questions?

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