The University of Southampton
University of Southampton Institutional Repository

Robustness and Regularization of personal audio systems

Robustness and Regularization of personal audio systems
Robustness and Regularization of personal audio systems
As well as being able to reproduce sound in one region of space, it would be useful to reduce the level of reproduced sound in other spatial regions, with a “personal audio” system. For mobile devices this is motivated by issues of privacy for the user and the need to reduce annoyance for other people nearby. Such personal audio systems can be realized with arrays of loudspeakers that become superdirectional at low frequencies, when the array dimensions are small compared with the acoustic wavelength. The design of the array then becomes a compromise between performance and array effort, defined as the sum of mean squared driving signals. Various methods of formulating this tradeoff as a regularization problem have been suggested and the connection between these formulations is discussed. Large array efforts are due to strongly self-cancelling multipole arrays. A concern is then the robustness of such an array to variations in the acoustic environment and driver sensitivity and position. The design of an array that is robust to these uncertainties then leads to a generalization of regularization.
array signal processing, loudspeakers, robustness, superdirective beamformer
1558-7916
2123-2133
Elliott, Stephen J.
721dc55c-8c3e-4895-b9c4-82f62abd3567
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
Choi, Jung-Woo
ca4b1f63-87f3-4932-a445-1b20378b3599
Kim, Youngtae
e3d9699e-0938-47b3-8346-4942fed62de2
Elliott, Stephen J.
721dc55c-8c3e-4895-b9c4-82f62abd3567
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
Choi, Jung-Woo
ca4b1f63-87f3-4932-a445-1b20378b3599
Kim, Youngtae
e3d9699e-0938-47b3-8346-4942fed62de2

Elliott, Stephen J., Cheer, Jordan, Choi, Jung-Woo and Kim, Youngtae (2012) Robustness and Regularization of personal audio systems IEEE Transactions on Audio, Speech and Language Processing, 20, (7), pp. 2123-2133. (doi:10.1109/TASL.2012.2197613).

Record type: Article

Abstract

As well as being able to reproduce sound in one region of space, it would be useful to reduce the level of reproduced sound in other spatial regions, with a “personal audio” system. For mobile devices this is motivated by issues of privacy for the user and the need to reduce annoyance for other people nearby. Such personal audio systems can be realized with arrays of loudspeakers that become superdirectional at low frequencies, when the array dimensions are small compared with the acoustic wavelength. The design of the array then becomes a compromise between performance and array effort, defined as the sum of mean squared driving signals. Various methods of formulating this tradeoff as a regularization problem have been suggested and the connection between these formulations is discussed. Large array efforts are due to strongly self-cancelling multipole arrays. A concern is then the robustness of such an array to variations in the acoustic environment and driver sensitivity and position. The design of an array that is robust to these uncertainties then leads to a generalization of regularization.

Full text not available from this repository.

More information

Published date: 2012
Keywords: array signal processing, loudspeakers, robustness, superdirective beamformer
Organisations: Signal Processing & Control Grp

Identifiers

Local EPrints ID: 340112
URI: http://eprints.soton.ac.uk/id/eprint/340112
ISSN: 1558-7916
PURE UUID: 43d2fed4-c2ae-44ae-8e1d-be5f06fc7b55
ORCID for Jordan Cheer: ORCID iD orcid.org/0000-0002-0552-5506

Catalogue record

Date deposited: 11 Jun 2012 13:44
Last modified: 18 Jul 2017 05:48

Export record

Altmetrics

Contributors

Author: Jordan Cheer ORCID iD
Author: Jung-Woo Choi
Author: Youngtae Kim

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×