AES E-Library

Chameleon Subwoofer Arrays—Generalized Theory of Vectored Sources in a Closed Acoustic Space

An equalization model is presented that seeks optimal solutions to wide area low-frequency sound reproduction in closed acoustic spaces. The methodology improves upon conventional wisdom by incorporating a generalized subwoofer array where individual frequency dependent loudspeaker polar responses are described by complex spherical harmonic frequency dependent functions. Multi-point system identification is performed using 3-dimensional finite-difference time-domain simulation with optimization applied to seek global equalization represented by a set of orthogonal transfer functions applied to each spherical harmonic of each subwoofer within the array. The system is evaluated within a 3-dimensional virtual acoustic space using both time and frequency domain metrics.

Authors: Hill, Adam J.; Hawksford, Malcolm O.
Affiliation: University of Essex, Colchester, UK
AES Convention:128 (May 2010) Paper Number:8074 Import into BibTeX
Subject:Loudspeakers and Headphones

Click to purchase paper 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 $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD 128Papers)   /128/8074.pdf

Start a discussion about this paper!