ABSTRACT
A computer system is described which performs polyphonic transcription of known solo piano music by using high-level musical information to guide a signal-processing system. This process, which we term expressive performance extraction, maps a digital audio representation of a musical performance to a Musical Instrument Digital Interface (MIDI) representation of the same performance using the score of the music as a guide. Analysis of the accuracy of the system is presented, and its usefulness both as a tool for musicpsychology researchers and as an example of a musical-knowledgebased signal-processing system is discussed.
