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Effort variation regularization in sound field reproduction

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Effort variation regularization in sound field reproduction (EN)
Stefanakis, N (EN)
Sarris, J (EN)
Jacobsen, F (EN)
journalArticle (EN)
2014-03-01T01:33:20Z
2010 (EN)
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)
Acoustics (EN)
Transducers, Pressure (EN)
pressure transducer (EN)
sound (EN)
Acoustic field measurement (EN)
Acoustics (EN)
vibration (EN)
Equipment Design (EN)
theoretical model (EN)
Time Factors (EN)
Sound Spectrography (EN)
Computer Simulation (EN)
Sound pressure field (EN)
acoustics (EN)
Field conditions (EN)
computer simulation (EN)
instrumentation (EN)
Active control (EN)
Models, Theoretical (EN)
Reproducibility of Results (EN)
Vibration (EN)
equipment design (EN)
reproducibility (EN)
Driving signal (EN)
Acoustic fields (EN)
Reverberant room (EN)
sound detection (EN)
Wave field synthesis (EN)
Sound (EN)
pressure (EN)
Pressure (EN)
article (EN)
Spatial regions (EN)
Reproduction errors (EN)
construction work and architectural phenomena (EN)
Sound fields (EN)
time (EN)
Reverberation (EN)
Sound field reproduction (EN)
Facility Design and Construction (EN)
Journal of the Acoustical Society of America (EN)
English
ACOUSTICAL SOC AMER AMER INST PHYSICS (EN)
National Technical University of Athens
Digital Library of National Technical University of Athens | Dspace@NTUA
Κεντρική Βιβλιοθήκη Ε.Μ.Π.
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