A review of the maximum entropy spectral analysis (MESA) method
for time series is presented. Then, empirical evidence based on
maximum entropy spectra of real seismic data is shown to suggest
that
is a reasonable a priori choice of the
operator length for discrete time series of length .
Various data examples support this conclusion.
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is a reasonable a priori choice of the
operator length 
for discrete time series of length 
.
Various data examples support this conclusion.