Reactaball incorporates stochastic elements to extend musical exploration. The stochastic elements are ball-modeled whose inner parameters are randomly generated (position, direction and velocity). Other global parameters are driven in realtime by performers like global activity or number of balls. Another ball group presents inertial properties which respond to accelerometer control signals.
Objects play sounds when every stochastic balls crosses through its so called 'variable activity surround'. The objects sounds were programmed with random melodies and random chord sequences. Sound synthesis designed with Karlplus-strong method. All ball-related parameters controlled in realtime by OSC+Tablet.
The 2D rhythm box designed for this setting is controlled by the number of balls, ball velocity, ball direction and independent volume. Another designed object was a 4-finger continuous melody. Other regular objects here used were a global key selector, delay and reverb.
Developed with MTCF for Reactable(c).
This performance was exhibited as part of the final works presented in the interactive musical system design course (CDSIM).
@ Music Technology Group (MTF),
Pompeu Fabra University - Barcelona.
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