An audio-to-MIDI application in Java

Abstract: Audio and MIDI data are fundamentally different, yet intertwined in the
world of computer-based music composition and production. While a musical
performance may be represented in both forms, MIDI data can always be edited
and modified without compromising sound quality, and musical notation can be
produced from it rather straightforwardly. Thus, having a performance stored
as MIDI data can sometimes be preferable to having it stored as audio data.
However, in the absence of a MIDI-enabled instrument, the MIDI data would
need to be generated from the audio data, putting some rather severe
restrictions on the possibilities.
This thesis presents the foundation of an audio-to-MIDI application
developed in Java, following an introductory discussion on pitch detection,
MIDI, and the general problem of audio-to-MIDI translation. The audio-to-
MIDI performance of the application is generally good for music with fairly
simple sounds, but more work is needed for it to properly handle the more
complex sounds expected in the typical usage scenario.