Application of Linear Predictive Spectral Analysis to Multiple Tones in Noise

摘要

An application of linear predictive spectral analysis, in particular the forward-and-backward averaging procedure, to tones in noise is made. The accurate tone-frequency estimation capability and lack of tone-splitting make this an attractive technique for spectral analysis and estimation of tone amplitudes. The effect of inadequate pole-order on the spectral estimate in white and colored noise is investigated in a number of examples. The examples here indicate that the linear predictive technique should receive wider application for spectral analysis in the realm of underwater acoustics. Two programs in BASIC for the Hewlett Packard 9845 for the cases of real and complex data have been written and are available from the author; they are modifications to the original program in FORTRAN written by S. L. Marple.