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Perceptually motivated audio equalization using fixed-pole parallel second-order filters
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DOI：10.1109/LSP.2008.921473.png)
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Abstract
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In audio, equalizer design should take into account the frequency resolution of the auditory system. In this paper, this is accomplished by the fixed-pole design of parallel second-order filters. The design process has two steps: first, the poles of the filter are set according to the desired frequency resolution. Then, the feedforward coefficients of the second-order filters are determined by a linear least squares solution. The proposed parallel filter achieves effectively the same equalization results as the Kautz filter, but it requires 33% fewer multiplications and additions.
Keywords:
audio signal processing
infinite impulse response (IIR) digital filters
room response equalization
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