The language consists mostly of two parts, reflecting the qualitative difference of time and space dimensions.
An arithmetic core that can be given both a scalar and a stream semantics, in that basic operators operate on scalar values or infinite stream values, possibly collected in finite, nested spatial arrays.
A a collection of primitives that allows the creation of causal temporal relations, requiring a stream interpretation of the input/output data.
The design of the temporal primitives is motivated by applications from the domain of musical signal processing (music DSP). Such applications
rely heavily on the composition of output feedback systems such as linear IIR filters and other state machines, and
often use a parameter update scheme that executes at a lower sampling rate, i.e. the control rate.
The semantics of the full stream processing language is quite close to that of Faust.