Tokyo-based d.v.d is a trio with two drum players, Itoken and Jimanica and visualiser Takashi Yamaguchi (ymg) on the hardware front.
While the two drummers furiously beat two drum kits in front of a huge screen, their sounds trigger geometrical shapes with processing, Pong-style game settings or bizarre drop landscapes that interact, transform or collapse.
Jimanica explains how it works:
An audio generating computer and a second one that generates the visuals exchange signals through LAN using OSC. The tracks are played with max/msp. The drum sets are attached with a sensor called trigger and that transmits the vibration of the drums as signals to the midi interface. Those signals are then converted into midi note numbers. That midi data is then sent to the visual PC and creates the actions in the animations generated by processing software.
Basically, we as the two drummers perform on top of an audio track and sometimes we follow the score depending on the tracks. The tracks all have set duration so we never improvise the ending sounds and patterns — we just have a grasp of the finishing point from the composition and the monitor. Sometimes we add sound effects by hitting the drums during the tracks so that’s why you can hear all kinds of organic sounds as well.