1. A method of processing a digital audio signal using continuously variable time-frequency resolution, the method comprising: selecting a portion of an input digital audio signal, wherein the selected portion comprises a number of input samples; resampling the selected portion of the input digital audio signal; generating a plurality of spectral characteristics associated with the resampled portion of the input digital audio signal; generating a portion of an output digital audio signal from the plurality of spectral characteristics; and resampling the portion of the output digital audio signal to generate a number of output samples, wherein the number of output samples is substantially equal to the number of input samples.