ulation on the data in the input
vector x at the input demodulation frequency = f.

the complex demodulation consists of the following--

 1. an amplitude versus time plot;
 2. a phase versus time plot;
 3. an updated demodulation frequency estimate
    to assist the analyst in determining a
    more appropriate frequency at which
    to demodulate in case the specified
    input demodulation frequency f
    does not flatten sufficiently the
    phase plot.

the allowable range of the input demodulation fre