Using the period gram approach, develop a "power meter" for estimating the power in a given frequency band f1 ≤ f ≤ f2.
Demonstrate the operation of your power meter by computing the power, in a given frequency band, at the output of a suitably chosen linear system with a white noise at the system input.
Your choice of a system is arbitrary, but you must verify the validity of the results given by your power meter.