An Open Design for Computer-Aided Algorithmic Music Composition
Universal-Publishers, 2005 - 484 Seiten
This dissertation introduces a new design for a computer-aided algorithmic music composition system. Rather than exploring specific algorithms, this study focuses on system and component design. The design introduced here is demonstrated through its implementation in athenaCL, a modular, polyphonic, poly-paradigm algorithmic music composition system in a cross-platform interactive command-line environment. The athenaCL system offers an open-source, object-oriented composition tool written in Python. The system can be scripted and embedded, and includes integrated instrument libraries, post-tonal and microtonal pitch modeling tools, multiple-format graphical outputs, and musical output in Csound, MIDI, audio file, XML, and text formats. Software design analysis is framed within a broad historical and intertextual study of the themes, approaches, and systems of computer-aided algorithmic composition (CAAC). A detailed history of the earliest experiments, as well as analysis of the foundational CAAC systems, is provided. Common problems and interpretations of CAAC are then presented in a historical and intertextual context, drawn from the writings and systems of numerous composers and developers. Toward the goal of developing techniques of comparative software analysis, a survey of system design archetypes, based on seven descriptors of CAAC systems, is presented. With this foundation, athenaCL system components are analyzed in detail. System components are divided into abstractions of musical materials, abstractions of musical procedures, and system architecture. For each component, object models, Python examples, and diagrams are provided. Further, each component is given context in terms of its compositional implications and relation to alternative and related models from the history of CAAC.
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__call__ algorithmic composition amplitude athenaCL athenaCL system AthenaObject auxiliary parameters basketGen breakPointLinear CAAC systems Class Diagram Command Component Diagram composer Computer Music computer-aided algorithmic composition configured constant created Csound Displays a list duration environment event list event parameters EventMode EventSequence Example Filter ParameterObjects following diagram format functionality graphic Guido Hiller and Isaacson idiom affinity Illiac inheritance Instrument number interactive interface Interpreter Koenig language Lisp loop Max/MSP microtonal MIDI MIDI file Multiset musical structures object composition octave offers Orchestra orderedCyclic output OutputEngine OutputFormats parameter values ParameterObjects PathVoice pitch class pitch groups Pitch object pitch space postMap produce provides psReal Pulse object Python language randomChoice randomPermutate randomUniform Rhythm score selection selectionString sequence set class slots sound source specified with ParameterObjects stepString Stochastic Music stored string sub-classes subroutines techniques Temperament Texture’s TextureModule Textures and Clones transformations waveSine Western notation Xenakis
Seite 1 - Introduction The object of the present volume is to point out the effects and the advantages which arise from the use of tools and machines;—to endeavour to classify their modes of action;—and to trace both the causes and the consequences of applying machinery to supersede the skill and power of the human arm.