Effort variation regularization in sound field reproduction

Stefanakis, N; Jacobsen, F; Sarris, J

dc.contributor.author	Stefanakis, N	en
dc.contributor.author	Jacobsen, F	en
dc.contributor.author	Sarris, J	en
dc.date.accessioned	2014-03-01T01:33:20Z
dc.date.available	2014-03-01T01:33:20Z
dc.date.issued	2010	en
dc.identifier.issn	0001-4966	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20386
dc.subject.classification	Acoustics	en
dc.subject.other	Active control	en
dc.subject.other	Driving signal	en
dc.subject.other	Field conditions	en
dc.subject.other	Reproduction errors	en
dc.subject.other	Reverberant room	en
dc.subject.other	Sound field reproduction	en
dc.subject.other	Sound fields	en
dc.subject.other	Sound pressure field	en
dc.subject.other	Spatial regions	en
dc.subject.other	Wave field synthesis	en
dc.subject.other	Acoustic field measurement	en
dc.subject.other	Acoustic fields	en
dc.subject.other	Reverberation	en
dc.subject.other	acoustics	en
dc.subject.other	article	en
dc.subject.other	computer simulation	en
dc.subject.other	construction work and architectural phenomena	en
dc.subject.other	equipment design	en
dc.subject.other	instrumentation	en
dc.subject.other	pressure	en
dc.subject.other	pressure transducer	en
dc.subject.other	reproducibility	en
dc.subject.other	sound	en
dc.subject.other	sound detection	en
dc.subject.other	theoretical model	en
dc.subject.other	time	en
dc.subject.other	vibration	en
dc.subject.other	Acoustics	en
dc.subject.other	Computer Simulation	en
dc.subject.other	Equipment Design	en
dc.subject.other	Facility Design and Construction	en
dc.subject.other	Models, Theoretical	en
dc.subject.other	Pressure	en
dc.subject.other	Reproducibility of Results	en
dc.subject.other	Sound	en
dc.subject.other	Sound Spectrography	en
dc.subject.other	Time Factors	en
dc.subject.other	Transducers, Pressure	en
dc.subject.other	Vibration	en
dc.title	Effort variation regularization in sound field reproduction	en
heal.type	journalArticle	en
heal.identifier.primary	10.1121/1.3458844	en
heal.identifier.secondary	http://dx.doi.org/10.1121/1.3458844	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	In this paper, active control is used in order to reproduce a given sound field in an extended spatial region. A method is proposed which minimizes the reproduction error at a number of control positions with the reproduction sources holding a certain relation within their complex strengths. Specifically, it is suggested that the phase differential of the source driving signals should be in agreement with the phase differential of the desired sound pressure field. The performance of the suggested method is compared with that of conventional effort regularization, wave field synthesis (WFS), and adaptive wave field synthesis (AWFS), both under free-field conditions and in reverberant rooms. It is shown that effort variation regularization overcomes the problems associated with small spaces and with a low ratio of direct to reverberant energy, improving thus the reproduction accuracy in the listening room. (C) 2010 Acoustical Society of America. [DOI: 10.1121/1.3458844]	en
heal.publisher	ACOUSTICAL SOC AMER AMER INST PHYSICS	en
heal.journalName	Journal of the Acoustical Society of America	en
dc.identifier.doi	10.1121/1.3458844	en
dc.identifier.isi	ISI:000280769800028	en
dc.identifier.volume	128	en
dc.identifier.issue	2	en
dc.identifier.spage	740	en
dc.identifier.epage	750	en