Extensions to Dynamic Wave Terrain Synthesis for Multidimensional Polyphonic Expression
Author
Zabetian, Sohejl
Term
4. Term
Education
Publication year
2018
Submitted on
2018-08-17
Pages
49
Abstract
This thesis explores how Multidimensional Polyphonic Expression (MPE) can make wave terrain synthesis more musically expressive and practical. It presents the design and implementation of a real-time, polyphonic instrument in Max/MSP with OpenGL-based visual feedback, controlled via an MPE interface (ROLI Seaboard). The core approach maps MPE’s continuous per-note controls to key synthesis parameters and extends the classical wave terrain model with dynamic surface modulation and the use of nonlinear dynamical systems to increase flexibility and sonic range. The system is analyzed using theories of sound synthesis and digital instrument design and evaluated through user tests and usability assessment. Findings indicate a successful instrument design, suggest that MPE mitigates several inherent challenges of wave terrain synthesis, and reveal general interest in visually based sound synthesis and expressive interfaces. The work contributes an implementation, an MPE mapping strategy, and practical extensions to wave terrain synthesis, while identifying strengths, weaknesses, and directions for future improvement.
Denne afhandling undersøger, hvordan Multidimensional Polyphonic Expression (MPE) kan gøre wave terrain-syntese mere musikalsk udtryksfuld og anvendelig i praksis. Projektet omfatter design og implementering af et realtids, polyfont instrument i Max/MSP med OpenGL-baseret visuel feedback og styring via en MPE-grænseflade (ROLI Seaboard). Kernen i tilgangen er at kortlægge MPE’s kontinuerte, pr.-tone-kontroller til centrale synteseparametre og at udvide den klassiske wave terrain-model med dynamisk overflademodulation samt brugen af ikke-lineære dynamiske systemer for at øge fleksibilitet og klangligt spektrum. Systemet analyseres ud fra teorier om lydsyntese og digital instrumentdesign, og evalueres gennem brugerafprøvninger og brugbarhedstest. Resultaterne peger på et velfungerende instrumentdesign, at MPE kan afhjælpe flere iboende udfordringer ved wave terrain-syntese, samt en generel interesse for visuel baseret lydsyntese og ekspressive grænseflader. Arbejdet bidrager med en implementering, en parameterkarteringsstrategi for MPE, og praktiske udvidelser af wave terrain-syntese, samt identificerer styrker, svagheder og mulige forbedringer for fremtidig udvikling.
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Keywords