1. A method performed by one or more processing devices for processing an audio signal, comprising: filtering the low-frequency components and the high-frequency components of the audio signal to produce a plurality of subband signal outputs; converting the plurality of subband signal outputs to a scaled representation of a time-frequency grid such that the subbands are mapped over time; computing subband parameters by analyzing each tile of the time-frequency grid using a statistical analysis technique, the subband parameters including one or more of: (a) F0, which is a frequency offset measured from the bottom of the lowest subband of the first sinusoid; (b) DeltaF, which is the distance between the two closest sinusoids; (c) Ph(i), which is the initial phase of each sinusoid, where i=1. .. N, where N is the total number of sinusoids; (d) Slant, which is a change in frequency over the time-duration of tile and there is a single subband parameter for all sinusoids in a tile, and the statistical analysis technique is a fast Fourier transform (FFT) technique, further comprising: performing a fast Fourier transform over samples of the audio signal for each subband to obtain transformed samples; and analyzing the transformed samples to determine whether the pattern for reconstructing the high-frequency components is present; determining the subband parameters, F0, DeltaF, and Ph(i), for each subband using the transformed samples; computing a Slant for each F0 and DeltaF to obtain a set of results; analyzing the set of results to determine a global F0 and a global DeltaF; finding a pattern in the scaled representation for reconstructing the high-frequency components based on the statistical analysis technique; encoding the subband parameters and the high-frequency components into an encoded bitstream based on the pattern; ordering the subband parameters and the high-frequency components in the encoded bitstream such that the subband parameters and the high-frequency components are in order of psychoacoustic importance and subject to the constraint that the subband parameters are placed first in the encoded bitstream followed by the high-frequency components; transmitting the encoded bitstream over a network channel having a bandwidth; and decoding the encoded bitstream to reconstruct the high-frequency components of the audio signal using the subband parameters in the encoded bitstream.