Some devices may have less continuous reporting, sending out values representing predetermined trigger points. These numbers determine the location or body position of a performer over time within a pre-defined range. Timing and location may be used to determine the speed or force of an action. Software can interpret these numbers to create music based on either a performer's exact location or position, or by movement relative to a previous location or position. The number of parameters transmitted by a device also defines some of its musical capabilities.
Spatial sensors work in one, two, or three dimensions.
Body sensors may track one or more parts of the body. These questions may be answered by allowing the physicality of movement to impact on musical material and processes. These relationships may be established by viewing the body and space as musical instruments, free from the associations of acoustic instruments, but with similar limitations that can lend character to sound through idiomatic movements. Traditional studies in orchestration, as well as studies in sound synthesis, begin by examining the physical properties of instruments and their methods for producing sound. Physical constraints produce unique timbral characteristics, and suggest musical material that will be idiomatic or appropriate for a particular instrument's playing technique.