Musical syntactic and semantic structures in APL2

Authors:
Erik S. Friis;Stanley Jordan
Affiliations:
IBM Corporation, Route 100, Somers, New York;163 3rd Avenue, Suite 143, New York, New York
Venue:
APL '90 Conference proceedings on APL 90: for the future
Year:
1990

Citing 2
Cited 2

APL for music

APL '89 Conference proceedings on APL as a tool of thought
Semantic Information Processing

Semantic Information Processing

Toward a lexicon of musical APL2 phrases (invited)

APL '91 Proceedings of the international conference on APL '91
The foundations of suitability of APL2 for music

IBM Systems Journal

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Abstract

APL2 provides an excellent platform for implementing both syntactic and semantic representations of music, and for effecting transformations between the two. We use general arrays to represent syntactic information in the form of Musical Instrument Digital Interface (MIDI) data streams and illustrate a semantic structure by defining a diatonic scale. Chords are created within that scale using the “each” operator to facilitate this development. Finally, we make a few observations regarding relationships and transformations between these representations.