In this paper a frequency domain multipoint equalization algorithm, which combines fractional octave smoothing of measured impulse responses (IRs) in multiple locations and the extraction of a representative prototype, is presented. The proposed approach is evaluated considering different methods to combine the IRs for the prototype extraction, and to obtain the inverse filter for equalization, using sets of impulse responses measured in realistic environments. With respect to previous works, the influence on the equalization performance of the number of considered positions and of the equalization zone size is deeply investigated. Also a comparison with the single point equalization approach is reported. Finally, the multipoint equalization robustness is evaluated also on positions different from those used for the equalizer estimation.

Authors: Cecchi, Stefania; Palestini, Lorenzo; Peretti, Paolo; Romoli, Laura; Piazza, Francesco; Carini, Alberto
Affiliations: STI - Universita’ di Urbino, Urbino, Italy; Università Politecnica delle Marche, Ancona, Italy(See document for exact affiliation information.)
AES Convention: 127 (October 2009) Paper Number: 7932
Publication Date: October 1, 2009 Import into BibTeX
Subject: Multichannel Sound and Imaging
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=15127

Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD 127Papers)   /127/7932.pdf

Start a discussion about this paper!