Nick Kwolek Martin Pendergast Stephen Edwards David Duemler

Outline Project Overview Patent 1 - 4,479,416 Patent 2 - 4,945,804 Patent 3 - 4,392,406 Similar Product – Mic Notator

Project-Specific Success Criteria An ability to sample an audio signal with appropriate input filtering. An ability to transform an audio signal to the frequency domain in finite length sample windows. An ability to determine the note names and durations based on the frequency spectrum and an internal metronome. An ability to generate a musical score stored in a MIDI file, based on the analyzed data. An ability to transfer the completed music file to a removable storage medium.

Signal Processing Software Currently a Matlab script Possibility of Using Microchip IDE to directly comply code to dsPIC If not, port code to C, then compile to dsPIC Uses an FFT to create frequency spectrum Window size: 4096 Decimation and window lag can be varied Selects the highest amplitude frequency as the fundamental

Similar Art Patent # 4,479,416 Issued Oct 30, 1984 Abstract: A music transcription apparatus and method which do not require the use of a special electronic keyboard. Microphone based Uses a bank of matched filters

Similar Art (cont) Patent # 4,945,804 Issued July 7, 1990 Abstract: A method and system for transcribing musical information that allows a musician or composer to enter both rhythmic and melodic information directly from a musical instrument May enter melody and rhythm concurrently, or in two passes Can determine beat unit dynamically, using a key press

Similar Art (cont) Patent # 4,392,406 Issued July 12, 1983 Abstract: A system for transcribing a sequence of input analog signals having characteristic frequencies and durations into indicia which visibly reflect the frequencies and durations of input analog signals. Uses zero crossing method.

Similar Art (Cont) Software tool – Mic Notator Produced by the Make Music Corporation Part of the Finale music composition software suite Abstract: Uses a standard microphone connected to a computer Pure software implementation Limited to Brass/Woodwind instruments Is covered by patents, in contact with the company to find out which they hold