accuracies.

If (numerator, denominator) is passed in for ``*system``, coefficients
for both the numerator and denominator should be specified in descending
exponent order (e.g., ``z^2 + 3z + 5`` would be represented as
``[1, 3, 5]``).

Examples
--------
Construct the transfer function
:math:`H(z) = \frac{z^2 + 3z + 3}{z^2 + 2z + 1}` with a sampling time of
0.5 seconds:

>>> from scipy import signal

>>> num = [1, 3, 3]
>>> den = [1, 2, 1]

>>> signal.TransferFunction(num, den, dt=0.5)
TransferFunctionDiscrete(
array([ 1.,  3.,  3.]),
array([ 1.,  2.,  1.]),
dt: 0.5
)

r”