Design of Algorithm to Automatically Determine Bowing Directions for Violin-playing Robot

2016 Fiscal Year Final Research Report

• Project/Area Number: 26330422
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Entertainment and game informatics 1
• Research Institution: Ryukoku University
• Principal Investigator: Shibuya Koji 龍谷大学, 理工学部, 教授 (20287973)
• Research Collaborator: ARATANI Takao ; YABU Hironoshin ; HASEGAWA Natsumi ; MORISHIMA Daichi ; ISHIMOTO Hiroyuki ; NISHIMURA Tomoyuki ; TSUTIMOTO Gaito
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: バイオリン演奏 / 弓付け / ロボット

Outline of Final Research Achievements

WWe are trying to increase the ability of our violin-playing robot to convey its musical intention to human audiences. We designed an algorithm to automatically determine the bowing directions from the musical scores. It judges whether the robot can play the score or not based on the hardware specifications. Then, it reduces the number of the possible bowing patterns by increasing the bow speed, which demanded the high hardware specifications. In addition, we proposed an evaluation function based on the rules violinists use to chose the pattern of the bowing movements. Finally, we determined the bow force and the sounding point based on the researches on the acoustic violin sounds. We also analyzed the sounds of trained violinists to investigate how they alter sound volume when expressing bright and dark timbres. As a result, we found that they change sound volume differently for giving us different impressions. We improved the hardware of the violin-playing robot, too.

Free Research Field

ロボット工学