1 2 1, 3 1 Design and Implementation of a Drumstick with Stroke Recognition Function for Integration of Real and Virtual Drums Hiroyuki Kanke, 1 Yoshinari Takegawa, 2 Tsutomu Terada 1 and Masahiko Tsukamoto 1 A drum set is composed of various kinds of percussion, and has the problem of portability as percussion is heavy and big. Virtual drums have drumsticks mounting motion sensors and output sounds by stroking virtual percussion with the drumsticks. These virtual drums have high portability however, they still have the difficulty in performance and a lack of acoustic tones. Therefore, the goal of our study is to construct a drum stick with stroke recognition function for integration of real and virtual drums. The proposed system recognizes the difference between a stroke of real percussion and a stroke of virtual percussion. We have developed a prototype system, and evaluated its effectiveness. 1. ( ) 1) 1 Graduate School of Engineering, Kobe University 2 Organization of Advanced Science and Technology, Kobe University 3 PRESTO, Japan Science and Technology Agency 1
2 3 4 5 6 7 2. V-beat Air Drum 1) Vbeat Air Drum Maki Patola 4) Mike Collicutt 5) 3. 1 (1) (2) ( 1) (1) 3.1 2 PC MIDI PC PC MIDI MIDI 3.2 2
実ドラム使用時 仮想ドラム使用時 加速度 (mg) 基準強度 加速度データ t(ms) 声を出 しない 声を出 する 1 角速度 (dps) 角速度データ 加速度 角速度センサ PC MIDI 音源 t(ms) 無線通信 音声制御 1 加速度 角速度のセンサデータ 2 叩打動作の識別 3 声出 実打面叩打仮想打面振下ろし仮想打面振上げ 2 3 3 3 ( ) ( ) 2000mG 5ms 30ms 40ms 70ms ( 3 ) 3
1 通過時間 (ms) 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 1000 27 27 26 24 21 19 18 16 15 14 13 13 13 12 12 12 ) 1100 27 27 25 24 21 19 18 17 15 13 13 13 13 12 12 11 G 1200 26 25 24 21 20 19 17 15 14 13 13 12 12 11 11 9 (m 1300 24 24 21 20 19 18 16 14 13 13 12 12 11 11 9 7 度強 1400 21 21 20 19 18 17 15 14 13 12 11 11 11 9 7 6 準 1500 20 19 19 18 17 15 14 13 12 11 11 11 9 8 6 6 基 1600 19 19 18 17 16 14 12 12 11 10 9 9 8 7 6 4 1700 19 17 17 16 14 12 12 11 10 10 9 8 7 6 5 3 1800 18 18 16 14 14 12 12 11 10 10 9 8 6 5 4 2 1900 18 16 15 14 14 12 11 10 10 9 8 7 5 4 2 2 2000 18 17 16 14 14 12 11 10 10 9 8 7 4 2 2 2 4 PC 3.3 5 8 5 1 10 1600mG 2000mG 55ms 65ms 10 1800mG 60ms 4. WAA-006 ( 4) 5ms Roland MIDI SD-20 PC Windows 7 Microsoft Visual C++ 2008 5. 5.1 2 60bpm(beats per minute) 120bpm 2 1 8 5 8 2 6 10 4 6 2 1 4
クラッシュシンバル ( 仮想叩打 ) 3 (a) 1(60bpm) バスドラム スネアドラム 5 1 クラッシュシンバル ( 仮想叩打 ) ハイハット 100 97.3 100 100 100 98.0 95.7 96.7 (b) 1(120bpm) 100 100 100 100 96.7 99.3 88.3 95.0 6 2 ハイハット (c) 2(60bpm) 100 100 100 100 94.0 100 88.3 96.7 2 (mg) 1900 1800 1900 1700 (ms) 55 55 70 65 (d) 2(120bpm) 98.0 98.0 90.3 100 94.4 86.0 93.3 85.0 2 1 5 2 1 5 25 6 10 4 5.2 3 1(60bpm) 1 120bpm 2(120bpm) 7 2 2 80% 6 2 4 2 5
加速度 (mg) 7. 6. 4 基準強度 t(ms) 実打面仮想打面仮想打面仮想打面 7 4.08 2.98 9.43 7.48 2010 12 19 2010 2 8. ( ) (A)(20240009) (B)(21700198) 1) Silverlit V-beat AirDrum : http://www.silverlit.com/product 04.htm. 2) T. M. Patola, A. Kanerva, J. Laitinen, and T. Takala: Experiments with Virtual Reality Instruments, Proc. of the International Conference on New Interfaces for Musical Expression (NIME05), pp. 11-16, 2005. 3) S. Gelineck, N. Bottcher, and L. Martinussen: Virtual Reality Instruments capable of changing Dimensions in Real-time, Proc. of the International Conference on Enactive Interfaces, 2005. 4) T. M. Patola: User Interface Comparison for Virtual Drums, Proc. of the International Conference on New Interfaces for Musical Expression (NIME05), pp. 144-147, 2005. 5) M. Collicutt, C. Casciato, and M. M. Wanderley: From Real to Virtual: A Comparison of Input Devices for Percussion Tasks, Proc. of the International Conference on New Interfaces for Musical Expression (NIME09), 2009. 6