Tok! : A Collaborative Acoustic Instrument using Mobile Phones

Lee, Sang Won and Srinivasamurthy, Ajay and Tronel, Gregoire and Shen, Weibin and Freeman, Jason

Proceedings of the International Conference on New Interfaces for Musical Expression

Tok! is a collaborative acoustic instrument application for iOS devices aimed at real time percussive music making in a colocated setup. It utilizes the mobility of hand-held devices and transforms them into drumsticks to tap on flat surfaces and produce acoustic music. Tok! is also networked and consists of a shared interactive music score to which the players tap their phones, creating a percussion ensemble. Through their social interaction and real-time modifications to the music score, and through their creative selection of tapping surfaces, the players can collaborate and dynamically create interesting rhythmic music with a variety of timbres.