Keywords: Wireless, Sensor, Accelerometer, Motion, Rhythm, Large group, Music, Interactive, Dance.

We have developed a set of low-cost, wireless motion
sensors that enable a large group of dancers to participate
concurrently in a real-time, interactive musical performance.
These sensors are either worn or held by participants
and transmit a short RF pulse at the extremes of
limb motion. The RF pulses are received by a base
station and analyzed to detect rhythmic features and estimate
the general activity level of the group. These
data are then used to generate music that can either lead
or follow the participants? actions, thereby tightening
the feedback loop between music and dancer.