Compositional Methodologies Based on the Systemization of the Pitch Structures Containing Microtonal Intervals and on the Typification of the Components of Sounds

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K00209
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 01070:Theory of art practice-related
• Research Institution: Tokyo National University of Fine Arts and Music
• Principal Investigator: Orikasa Toshiyuki 東京藝術大学, 音楽学部, 准教授 (80751479)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 作曲方法論 / CAO（コンピュータ支援作曲） / 音律

Outline of Final Research Achievements

This project examined the methods of systematical operations of pitch materials including "micro-intervals" from an analytical and a typological point of view, assuming concrete sounds as materials for works. The specific treatments of sounds were inspected by referring to previous research in the field of music theory dealing with pitch and academic achievements in various related fields. That treatments were attempted at some compositional methodological level containing verification by "Computer-Aided Composition" related IDE and programs that executes acoustic analysis, etc., and production of work materials was carried out according to the progress and stage. (Due to various circumstances caused by COVID-19, the public performance of the work was held only at the end of the final year.)

Free Research Field

作曲、コンピュータ音楽

Academic Significance and Societal Importance of the Research Achievements

作曲者が素材として選び取った（聴き取った）音高組織を分析的に捉え、そこから音楽的な構造をいかに実現していくかについて、その方法自体を類型化していく方法論的な枠組みは、当然ながらそれを設定した作家個人の創作の文脈では一定の強力な応用可能性を持つ。
類型の扱いをより一般化して素材の「資源」として整理するためのある種の「定式化」（としてのプログラム構築）や、そのより現代的水準での処理方法の実装、より個人的文脈に限定されない応用可能性等の検討は、ひとつの例として、例えば教育研究方面での活用等も、その領域への応用方法の検討によっては十分想定され得るものである。