Patent ID: 8428276
Filing Date: 2013-04-23
Classification: H03G,H03H

Abstract:
1. An audio equalization method, the method comprising: selecting an initial digital filter, the initial digital filter corresponding to a plurality of frequency bands; frequency warping the initial digital filter to generate an audio equalization filter, the audio equalization filter comprising a finite impulse response (FIR) filter, said frequency warping the initial digital filter comprising applying a plurality of different warping factors to the plurality of frequency bands of the initial digital filter; and said applying the plurality of different warping factors comprising using a different warping factor for at least two of the plurality of frequency bands of the audio equalization filter, such that the at least two frequency bands of the audio equalization filter are configured to be tunable to separate center frequencies; wherein the audio equalization filter is configured to filter an input audio signal such that certain frequencies of the input audio signal are selectively adjusted.