学科分类
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10 个结果
  • 简介:为了庆祝Focal发展的重要里程碑,原厂推出了Chorus826W30周年限量纪念版本,Chorus826W延续既有Chorus的造型,但细节更为精进,可说是AMG版本的Chorus。铝镁合金内凹式TNV高音单元安装在铝合金框架上,高频延伸直上28kHz。

  • 标签: FocalChorus826W 音箱 音质 纪念版本
  • 简介:Inordertolistentobrainactivityasapieceofmusic,weproposedascale-freebrainwavemusic(SFBM)technology,whichtranslatesthescalpEEGintomusicnotesaccordingtothepowerlawofbothEEGandmusic.Inthispaper,themethodologywasfurtherextendedtochorusmusicoftwochannelsfromthetwohemispheres.Firstly,EEGdatafromtwochannelssymmetricallylocatedontheleftandrighthemispheresaretranslatedintoMIDIsequencesbySFBM,respectively,wheretheEEGparametersmodulatethepitch,durationandvolumeofeachmusicnote.Then,thetwosequencesarefiiteredintoachorusoftheChinesepentatonicscaleortheWesternmajorscale.TheresultedChineseandWesternmusicatdifferentsleepstagesillustratedistinctdifferencesinharmony,andthemusicwithChinesepentatonicscalesoundsmoreharmonious.

  • 标签: 音阶 中国 半球 大脑 MIDI 参数调制
  • 简介:Low-frequencychorusemissionshaverecentlyattractedmuchattentionduetothesuggestionthattheymayplayimportantrolesinthedynamicsoftheVanAllenBelts.However,themechanism(s)generatingtheselow-frequencychorusemissionshavenotbeenwellunderstood.Inthisletter,wereportaninterestingcaseinwhichbackgroundplasmadensityloweredthelowercutofffrequencyofchorusemissionsfromabove0.1fce(typicalordinarychorus)to0.02fce(extremelylow-frequencychorus).Thoseextremelylow-frequencychoruswaveswereobservedinaratherdenseplasma,wherethenumberdensityNewasfoundtobeseveraltimeslargerthanhasbeenassociatedwithobservationsofordinarychoruswaves.Forsuprathermalelectronswhosefreeenergyissuppliedbyanisotropictemperatures,lineargrowthrates(calculatedusingin-situplasmaparametersmeasuredbytheVanAllenProbes)showthatwhistlermodeinstabilitycanoccuratfrequenciesbelow0.1fcewhenthebackgroundplasmadensityNeincreases.EspeciallywhenNereaches90cm^-3ormore,thelowestunstablefrequencycanextendto0.02fceorevenless,whichisconsistentwithsatelliteobservations.Therefore,ourresultsdemonstratethatadensebackgroundplasmacouldplayanessentialroleintheexcitationofextremelylowfrequencychoruswavesbycontrollingthewavegrowthrates.

  • 标签: LOW-FREQUENCY CHORUS EMISSIONS anisotropic temperature instability
  • 简介:对新型苯氨基嘧啶类杀菌剂50%CHORUSWG防治辣椒灰霉病的田间效果进行了试验.结果表明:50%CHO-RUSWG防治辣椒灰霉病的防治效果较好.用量为120g/100L水,喷药液50~70L/667m2,药后7d、10d对叶部病害的防效分别为71.63%、72.83%,对果实病害的防效分别为74.49%、75.337%.50%CHORUSWG是二甲酰亚胺类杀菌剂的良好替代药剂.

  • 标签: CHORUS 灰霉病 试验初报 辣椒 药效 二甲酰亚胺类
  • 简介:Whistler-modechoruswavesareregardedasanimportantaccelerationmechanismcontributingtotheformationofrelativisticandultra-relativisticelectronsintheJovianradiationbelts.QuantitativedeterminationofthechoruswavedrivenelectronscatteringeffectintheJovianmagnetosphererequiresdetailedinformationofbothambientmagneticfieldandplasmadensityandwavespectralproperty,whichhowevercannotbealwaysreadilyacquiredfromobservationsofexistedmissionstoJupiter.WethereforeperformacomprehensiveanalysisofthesensitivityofchorusinducedelectronscatteringratestoambientmagnetosphericandwaveparametersintheJovianradiationbeltstoelaboratetowhichextentthediffusioncoefficientsdependonanumberofkeyinputparameters.Itisfoundthatquasi-linearelectronscatteringratesbychoruscanbestronglyaffectedbytheambientmagneticfieldintensity,thewavelatitudinalcoverage,andthepeakfrequencyandbandwidthofthewavespectraldistributionintheJovianmagnetosphere,whiletheyonlyrelyslightlyonthebackgroundplasmadensityprofileandthepeakwavenormalangle,especiallywhenthewaveemissionsareconfinedatlowerlatitudes.Giventhechoruswaveamplitude,chorusinducedelectronscatteringratesstronglydependonJovianL-shelltoexhibitatendencyapproximatelyproportionaltoLJ3.OurcomprehensiveanalysisexplicitlydemonstratestheimportanceofreliableinformationofboththeambientmagnetosphericstateandwavedistributionpropertytounderstandingthedynamicelectronevolutionintheJovianradiationbeltsandthereforehasimplicationsforfuturemissionplanningtoexploretheextremeparticleradiationenvironmentofJupiteranditssatellites.

  • 标签: Jovian radiation BELTS whistler-mode CHORUS RESONANT