stateMachine(self,
previousInputs=None,
previousOutputs=None)


 Parameters:
previousInputs  list of historical inputs running from x[1]
(at the beginning of the list) to x[j] at
the end of the list, where j is
len(self.dCoeffs)1 . Defaults to the appropriate
number of zeros.
previousOutputs  list of historical outputs running from y[1]
(at the beginning of the list) to y[k] (at
the end of the list), where k is
len(self.cCoeffs) . Defaults to the appropriate
number of zeros.
 Returns:
 A state machine that uses this difference equation to transduce
the sequence of inputs X to the sequences of outputs Y, starting
from a state determined by
previousInputs and
previousOutputs
