Variance Amplification
The TuningGoal.Variance requirement limits the noise variance amplification from
specified inputs to specified outputs. In technical terms, this requirement constrains the
norm of a closed-loop transfer function. This requirement is preferable to
TuningGoal.Gain when the input signals are random processes and the average gain
matters more than the peak gain. For example,
R = TuningGoal.Variance('n','y',0.1);
limits the output variance of y to for a unit-variance white-noise input n.
Frequency-Domain Specifications