摘要
Thespatialimpulseresponse(SIR)methodisoftenusedasthe’goldstandard5insimulationoftransientacousticwavefieldsduetoitshighaccuracyinthelineardomain.However,ahighsamplingfrequencyisoftenrequiredinordertoachievethehighaccuracy.Asaresult,alargeamountofdatahastobeprocessed.Inthispaperafastapproachforcomputingspatialimpulseresponseisproposedtoreducethecomputationburden.TheproposedapproachisdevelopedbyemployingtherelationshipofSIRsatobservedpointsandSIRsoftheprojectionpointsonthetransducersurface.Twocriticalparametersusedintheproposedapproach,thecalculationsamplingfrequencyandtheinterpolationsamplingfrequency,arethenanalyzed.Resultsshowthatfora2.25MHzrectangulartransducerwiththesizeof5mmxlOmm,acalculationsamplingfrequencyof1000MHzandaninterpolationsamplingfrequencyof500MHzcanachievesuperiorperformancewhileimprovingthecomputationefficiency18timesthanthedirectsolving.
出版日期
2016年03月13日（中国期刊网平台首次上网日期，不代表论文的发表时间）
