*string is a polyphonic physical modelling synthesizer built in Max for Live. It is based on a Karplus-Strong algorithm and contains pitch and damping (i.e. filtering) effects.
The sound source consists of four modelled strings whose 'excitators' or 'generators' originate from white noise or randomly generated clicks.
In the 'body' section pitch and filter settings can be set for each string individually. An LFO can be used to modulate individual pitch parameters.
Each of the four modelled strings can be sent to an individual 'reverberation room', setting different size and decay times a.o.
Further documentation can be found in the Max for Live device if Ableton Live´s Help View is turned on.