Patent ID: 7764802

Claim:
A method for generating an audio equalization filter, the method comprising: providing one or more filters comprising a plurality of frequency bands, the one or more filters each comprising a digital filter; and frequency warping the one or more filters to create an audio equalization filter, the audio equalization filter comprising a finite impulse response (FIR) filter, wherein frequency warping the one or more filters comprises performing a transformation of at least some of the frequency bands of the one or more filters into lower frequency bands by at least adjusting a plurality of warping factors, said adjusting comprising applying a different warping factor twice for each frequency band, such that the frequency bands of the audio equalization filter are able to be separately tuned to desired center frequencies; wherein the audio equalization filter is operable to filter an input audio signal such that certain frequencies of the input audio signal are configured to be selectively emphasized or deemphasized based at least in part on an input of a user.