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Convention Paper

Parametric Loudspeaker Equalization. Results and Comparison with Other Methods

Authors: López, Jose J.; Ramos, German

AES Convention 122 · Paper 7027 · May 2007

Abstract

The results obtained by a loudspeaker equalization method are presented and compared with other equalization methods. The main characteristic of the proposed method resides on the fact that the equalizer structure is planned from the beginning as a chain of SOS (Second Order Sections), where each SOS is a low-pass, high-pass or parametric filter defined by its parameters (frequency, gain and Q), and designed by a direct search method. This filter structure, combined with the subjectively motivated error function employed, allows obtaining better results from a subjective point of view and requiring lower computational cost. The results have been compared with different FIR (Finite Impulse Response) and IIR (Infinite Impulse Response) filter design methods, with and without warped structures. In all cases, for the same computational cost, the presented method obtains a lower error function value.

Details

Published in
AES Convention 122
AES Convention
122
Paper number
7027
Publication date
May 6, 2007
Session subject
Signal Processing, Sound Quality Design
Affiliation
Universidad Politecnica de Valencia (See document for exact affiliation information.)
Type
Convention Paper