... technique for LP of audio signals, see [12]andreferences therein. In WLP, the input signal undergoes anonuniform frequency transformation before a conventionalLP is performed, with the aim of enhancing ... containing a finite num-ber of dominant frequency components. In this way, themajority of audio signals is covered, except for the class of percussive sounds. The performance of the different LPmodels ... algorithms, and for designing a PLP model for polyphonic audio signals. For the conventional LP model, the performance maydiffer substantially for the autocorrelation and covarianceestimation methods, ...