Robust Fir Filters for Wireless Low-Frequency Sound Zones
Mo Zhou, Martin Bo Møller, Christian Pedersen, Jan Østergaard
Abstract
Low frequency personal sound zones can be created by controlling the sound pressure in separate spatially confined regions. The performance of a sound zone system using wireless communication may be degraded due to potential packet losses. In this paper, we propose robust FIR filters for low-frequency sound zone system by incorporating information about the expected packet losses into the design. A simulation study with eight loudspeakers surrounding two control regions shows that the proposed filters can improve the contrast and the sound quality when packet losses occur, with only a slight degradation in performance even when there is no packet loss. With the proposed filters, it is possible to gain 2 dB higher contrast on average across the frequency range 20-200Hz relative to the original filters when packet loss rate is 5%.
BibTeX
@inproceedings{icassp2023_robustfirfilters,
title = {Robust Fir Filters for Wireless Low-Frequency Sound Zones},
author = {Mo Zhou and Martin Bo Møller and Christian Pedersen and Jan Østergaard},
booktitle = {ICASSP 2023},
year = {2023}
}