Knowledge formalization and representation of the dynamics of expressive musical performance.
Item
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Title
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Knowledge formalization and representation of the dynamics of expressive musical performance.
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Identifier
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AAI9119642
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identifier
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9119642
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Creator
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Johnson, Margaret Louise.
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Contributor
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Adviser: Robert Orchard
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Date
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1991
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Language
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English
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Publisher
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City University of New York.
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Subject
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Computer Science | Music
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Abstract
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An expert system that determines interpretations of Bach fugues is developed. The input to the system is a numeric representation of the fugue, and the output is a listing of performance actions. Were a musician to perform these actions while playing the fugue, the performance would sound like one given by the expert upon whose expertise the system is based. A program called Music Printer Plus by Temporal Acuity Products is used to actually generate MIDI (Musical Instrument Digital Interface) performances of the fugue before and after the knowledge base is applied.;We describe the process of eliciting, formalizing and representing the knowledge of two expert performers. The systems theory concept of knowledge structures (as developed by George Klir), is used to organize the elicited knowledge, and as a basis for the design of the system. The actual implementation is based on a language recognizer for rhythmic patterns. Once a particular pattern is recognized in the input, a specific rule is applied, or a procedure is performed.;The expert system is run on example fugues to demonstrate the entire process. We also discuss the implementation issues involved in developing "human-sounding" performances.
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Type
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dissertation
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Source
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PQT Legacy CUNY.xlsx
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degree
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Ph.D.
