There are a number of techniques available for estimating the
frequency of a off-center sinusoid from the FFT bins around the one
with peak magnitude. Can we also estimate the phase of the off-center
sinusoid using similar methods? Would a legal approach be to find the
frequency using the well-known methods and then interpolate the
complex FFT data to get a complex response at the estimated frequency?
Surely this has been done before.
Thanks,
John
