Sound Cage is a mechatronic percussion instrument.
There are four sets of three aluminum bars. Two of these sets are for human performance and the other two are for the mechatronic component to hit.
Max is used to measure the amplitude value of aluminum bars that are hit by the performer. Speed of motorized rod in the middle depends on this amplitude value. Motor speed data is then sent to Arduino, which is activating and controlling the motor.
Aluminum sounds are picked up via contact microphones. Effects are added in Ableton Live.