Audio to MIDI Converter Team Obama Advisor: Dr. William Hunt Adnan Burkic Sean Earley Jon Kump Brian...
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Transcript of Audio to MIDI Converter Team Obama Advisor: Dr. William Hunt Adnan Burkic Sean Earley Jon Kump Brian...
![Page 1: 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.](https://reader034.fdocuments.net/reader034/viewer/2022050714/56649cf65503460f949c556f/html5/thumbnails/1.jpg)
Audio to MIDI ConverterTeam Obama
Advisor: Dr. William HuntAdnan BurkicSean EarleyJon Kump
Brian Tyson
Georgia Institute of Technology4/27/2010
![Page 2: 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.](https://reader034.fdocuments.net/reader034/viewer/2022050714/56649cf65503460f949c556f/html5/thumbnails/2.jpg)
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
![Page 3: 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.](https://reader034.fdocuments.net/reader034/viewer/2022050714/56649cf65503460f949c556f/html5/thumbnails/3.jpg)
Design Overview
![Page 4: 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.](https://reader034.fdocuments.net/reader034/viewer/2022050714/56649cf65503460f949c556f/html5/thumbnails/4.jpg)
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
![Page 5: 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.](https://reader034.fdocuments.net/reader034/viewer/2022050714/56649cf65503460f949c556f/html5/thumbnails/5.jpg)
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
![Page 6: 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.](https://reader034.fdocuments.net/reader034/viewer/2022050714/56649cf65503460f949c556f/html5/thumbnails/6.jpg)
Latency
• Difference in time DAW receives guitar note to time synthesizer plays sound
• Optimally less than 20ms
• Measured difference using host program
![Page 7: 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.](https://reader034.fdocuments.net/reader034/viewer/2022050714/56649cf65503460f949c556f/html5/thumbnails/7.jpg)
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
![Page 8: 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.](https://reader034.fdocuments.net/reader034/viewer/2022050714/56649cf65503460f949c556f/html5/thumbnails/8.jpg)
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
![Page 9: 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.](https://reader034.fdocuments.net/reader034/viewer/2022050714/56649cf65503460f949c556f/html5/thumbnails/9.jpg)
Pitch Bend
• Feature was successfully implemented
• Performance varies depending on note played and degree of bend
• Can be enabled or disabled as needed
![Page 10: 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.](https://reader034.fdocuments.net/reader034/viewer/2022050714/56649cf65503460f949c556f/html5/thumbnails/10.jpg)
Graphical User Interface
![Page 11: 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.](https://reader034.fdocuments.net/reader034/viewer/2022050714/56649cf65503460f949c556f/html5/thumbnails/11.jpg)
Demonstration Illustration
![Page 12: 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.](https://reader034.fdocuments.net/reader034/viewer/2022050714/56649cf65503460f949c556f/html5/thumbnails/12.jpg)
Marketable Changes
• Improved latency
• Optimized pitch bend
• Expand to more third-party software
• Support for non standard tunings
• Support for other instruments
![Page 13: 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.](https://reader034.fdocuments.net/reader034/viewer/2022050714/56649cf65503460f949c556f/html5/thumbnails/13.jpg)
Questions?