Hill, Adam J.; Hawksford, Malcolm O. J.

Chameleon subwoofer arrays in live sound

Journal article

Hill, Adam J. and Hawksford, Malcolm O. J. 2011. Chameleon subwoofer arrays in live sound. Acoustics Bulletin.

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Authors	Hill, Adam J. and Hawksford, Malcolm O. J.
Abstract	Live-sound subwoofer systems should deliver low-frequency sound evenly distributed throughout the audience area while simultaneously minimizing sound pressure levels on stage. Approximate solutions generally exploit cardioid subwoofers and/or steerable subwoofer clusters, yet require venue-specific manual fine tuning limited mainly by practical positioning issues. Enhanced live-sound systems are explored using a virtual three-dimensional acoustic space to model dominant venue characteristics. Specifically the Chameleon Subwoofer Array (CSA) is incorporated, already proposed as a solution to small-room low-frequency sound reproduction by extending the available degrees of freedom to control sound distribution in the target space. The CSA is adapted and scaled to match the large-scale dimensions typical of live events with 3-D simulation used to optimize and validate performance. Adaptation of existing industry-standard equipment with only minor modification is presented as a core feature.
	Live-sound subwoofer systems should deliver low-frequency sound evenly distributed throughout the audience area while simultaneously minimizing sound pressure levels on stage. Approximate solutions generally exploit cardioid subwoofers and/or steerable subwoofer clusters, yet require venue-specific manual fine tuning limited mainly by practical positioning issues. Enhanced live-sound systems are explored using a virtual three-dimensional acoustic space to model dominant venue characteristics. Specifically the Chameleon Subwoofer Array (CSA) is incorporated, already proposed as a solution to small-room low-frequency sound reproduction by extending the available degrees of freedom to control sound distribution in the target space. The CSA is adapted and scaled to match the large-scale dimensions typical of live events with 3-D simulation used to optimize and validate performance. Adaptation of existing industry-standard equipment with only minor modification is presented as a core feature.
Keywords	Acoustics; Live sound; Loudspeakers; Digital signal processing
Year	2011
Journal	Acoustics Bulletin
Publisher	Institute of Acoustics
Web address (URL)	http://hdl.handle.net/10545/229872
	hdl:10545/229872
Publication dates	Jun 2011
Deposited	20 Jun 2012, 11:50
Contributors	University of Essex
File	license_url File Access Level Open
File	license_rdf File Access Level Open
File	license.txt File Access Level Open

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