Perceptually Motivated Audio Equalization Using Fixed-Pole Parallel Second-Order Filters

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 freque...

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Bibliographic Details
Published in:IEEE signal processing letters 2008, Vol.15, p.477-480
Main Author: Bank, B.
Format: Article
Language:English
Subjects:
Audio signal processing
Audio systems
Equalizers
Finite impulse response filter
Frequency estimation
Frequency measurement
IIR filters
infinite impulse response (IIR) digital filters
Loudspeakers
Nonlinear filters
Position measurement
room response equalization
Signal resolution
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Summary: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.
ISSN:1070-9908
1558-2361
DOI:10.1109/LSP.2008.921473