Time domain acoustic contrast control implementation of sound zones for low-frequency input signals
Daan H. M. Schellekens, Martin Bo Møller, Martin Olsen
Abstract
Sound zones are two or more regions within a listening space where listeners are provided with personal audio. Acoustic contrast control (ACC) is a sound zoning method that maximizes the average squared sound pressure in one zone constrained to constant pressure in other zones. State-of-the-art time domain broadband acoustic contrast control (BACC) methods are designed for anechoic environments. These methods are not able to realize a flat frequency response in a limited frequency range within a reverberant environment. Sound field control in a limited frequency range is a requirement to accommodate the effective working range of the loudspeakers. In this paper, a new BACC method is proposed which results in an implementation realizing a flat frequency response in the target zone. This method is applied in a bandlimited low-frequency scenario where the loudspeaker layout surrounds two controlled zones. The performance is verified with experimental results in an acoustically damped room.
BibTeX
@inproceedings{icassp2016_timedomainacoust,
title = {Time domain acoustic contrast control implementation of sound zones for low-frequency input signals},
author = {Daan H. M. Schellekens and Martin Bo Møller and Martin Olsen},
booktitle = {ICASSP 2016},
year = {2016}
}