Sound fields in a slightly damped rectangular enclosure under active control

摘要: Effectiveness of the global sound field control inside a slightly damped rectangular enclosure by using potential energy, squared pressure and energy density as cost function is investigated numerically in present study. A detailed comparison between results obtained pressure-squared sensing presented distributions zones quiet are discussed. Three-dimensional visualization fields confirms that significant localized attenuation can be achieved specific areas even an overall amplification total results. The also show occurrence detrimental effects spillovers under sensing, while they removed control. more uniform fields, but not effective if error sensor located primary secondary sources. finding on producing large simple system has implication for building noise