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Convention Paper

Equalization Methods with True Response using Discrete Filters

Authors: Miller, Ray

AES Convention 116 · Paper 6088 · May 2004

Abstract

Equalizers with fixed frequency filter bands, although successful, have historically had a combined frequency response that at best only roughly matches the band amplitude settings. This situation is explored in practical terms with regard to equalization methods, filter band interference, and desirable frequency resolution. Fixed band equalizers generally use second-order discrete filters. Equalizer band interference can be better understood by analyzing the complex frequency response of these filters and the characteristics of combining topologies. Response correction methods may avoid additional audio processing by adjusting the existing filter settings in order to optimize the response. A method is described which closely approximates a linear band interaction by varying bandwidth, in order to efficiently correct the response.

Details

Published in
AES Convention 116
AES Convention
116
Paper number
6088
Publication date
May 6, 2004
Session subject
Signal Processing
Affiliation
Rane Corporation, Mukilteo, WA (See document for exact affiliation information.)
Type
Convention Paper