Patent ID: 8254210

Claim:
A method executed responsive to processor execution of instructions stored in a nontransitory storage medium, the method comprising: determining coefficients of a complex auto regression (AR) model to fit a complex average spectrum at a base frequency resolution of a set of one or more measured acoustic beams received at an acoustic array during a time block; determining residuals by filtering actual data through an inverse of the AR model at frequencies below a first threshold frequency; determining a quantized spectrum of the residuals at the base frequency resolution; determining magnitude, phase, and frequency bin at the base frequency resolution, for each peak of a set of one or more narrowband peaks above a second threshold frequency for the set of one or more measured acoustic beams; and sending a message that indicates without loss the quantized coefficients of the AR model, the quantized spectrum of the residuals, and the frequency bin, quantized magnitude and quantized phase for each peak of the set of one or more narrowband peaks to facilitate remote monitoring of the acoustic array.