@conference {119,
	title = {The Tactus: a Tangible, Rhythmic Grid Interface Using Found-Objects},
	booktitle = {NIME 2009},
	year = {2009},
	month = {03/06/2009},
	address = {Pittsburgh, PA},
	abstract = {This paper describes the inspiration and implementation of a tactile, tabletop synthesizer/step sequencer. The Tactus is an expandable and inexpensive musical interface for the creation of loop-based music. An optical camera, coupled with a computer running Max/MSP/Jitter can turn almost any matrix-like object into a step sequencer. The empty cells in the gridded object are filled with a fitting, colored object; the placement of which is analogous to adding an instrument or switching on a box in a step sequencer grid. The color and column position of every element in the matrix are used as parameters for a synthesizer while the row position of that element corresponds to the moment within the loop that entry is sounded. The two dimensional array can be positioned anywhere within the camera{\textquoteright}s visibility. Both the translation and rotation of the physical matrix are assigned to global parameters that affect the music while preserving the color and order of the cells. A rotation of 180 degrees, for example, will not reverse the sequence, but instead change an assigned global parameter.},
	author = {Mann, Yotam and Lubow, Jeff and Freed, Adrian}
}