1. Minimalist Style
for iPhone RjDj / iPod Touch
Akihiko Matsumoto

2. Akihiko Matsumoto
• Composer / Sound
Artist
• Tokyo in Japan
• Born in 1981
• Studied with Akira
Takaoka, Cathy Cox,
Johnathan F. Lee
• Algorithmic
Composition
http://homepage.mac.com/sinx_music/

3. Overview
• Generative music
• Interactive music
• Minimal music
• Schenkerian theory based algorithm
• Work for iPhone / iPod Touch

4. Aesthetic
Background

5. Why Minimal ?
• Unending minimal music but not repeating
patterns
• Generated by algorithm
• Interactive control for realtime
composition

6. Environment

7. Platform
• iPhone ... multimedia device
• RjDj ... reactive music software
• PureData ... developer tool

8. iPhone
• Multi touch screen
• Microphone
• Speaker / headphone
• Internet / WiFi
• GPS
• Accelerometer

9. RjDj
• Reactive music software
• surreal field recording
• aurally augmented reality
• Software as music, music as software
• PD on iPhone / iPod Touch, Android soon
• Upload & Download scenes

10. RjDj Technical
background
• Sound (microphone)
• Movement (accelerometer)
• User Interaction (touch screen)
• Location (GPS)
• Network(TCP/UDP, HTTP soon)

11. PD (PureData)
• Open source software by Miller Puckette
• Visual programming
• Mac OSX, Windows, Linux
- http://www-crca.ucsd.edu/~msp/
software.html
• RjDj Composers Pack

12. Development

13. Programming
procedure
• Analysis based algorithmic composition
• Develop with PD vanilla
• Upload scene on RjDj web
• Download scene with iPhone Safari

14. Analyze Minimalist
Music
• Steady pulse
• Slow transformation
• Smaller motives
• Process music with strict rules
• Composers... Steve Reich, Terry Riley,
Philip Glass, John Adams

15. Schenkerian Analysis
• Approach
- Music reduction
• Goal
- Recreation from motive
• Advanced challenge
- Generate minimal music from non-minimal
motive

16. Algorithmic
Composition
• Minimalistic repeat algorithm
• Variable musical style
• Realtime sound effect
• 2 voice

17. Upload PD Patch
• Share your scene(pd patch)
• Free or Sell your scene
• Download on iPhone Safari
• http://rjdj.me/sharescene/

18. How to use
• Musical progression (shake
iPhone!)
• Motivic style (touch screen)
• Delay on-off (touch screen)
• Tempo / Pulse (scrub screen)
• Transpose (scrub screen)
• Timber (touch screen and
tilt iPhone)

19. Enjoy
• Minimalist Style by Akihiko Matsumoto
http://homepage.mac.com/sinx_music/
works/minimalist.html