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首页 耳机和耳机技术

耳机和耳机技术.doc

耳机和耳机技术

xujiangyu0619
2012-08-22 0人阅读 举报 0 0 暂无简介

简介:本文档为《耳机和耳机技术doc》,可适用于IT/计算机领域

耳机和耳机技术HowdoIchoosewhichheadphonestobuy我该如何选择哪些耳机买?Headphonesforprofessionalusewillhaveadifferentsetofselectioncriteriathanthoseforhomeorportableuse专业用耳机将有一个比家庭或便携式使用一套不同的选择标准。Therearesomanytypes(home,studio,portable,dynamic,electrostatic,etc)thatmanypeoplefindtheselectionprocessbewildering有这么多种类(家工作室便携式动态静电等)很多人觉得这是甄选过程扑朔迷离。Moresothanwithloudspeakers,thesoundofheadphonesisdependentonthelistener更何况比扬声器耳机的声音在听者依赖。Sinceheadphonesareworn,otherfactorssuchascomfortplayanimportantroleintheselectionprocess由于戴耳机舒适度等其他因素在选拔过程中的重要作用。Aprospectivebuyershouldregardrecommendationsasnomorethansuggestions准买家应视为不超过建议更多的建议。Forinformationontheuniquecharacteristicsofheadphonesoundfields,seetheFAQregardinghowtoevaluateheadphonesoundquality有关的耳机声场的独特特征的信息请参见常见问题解答关于如何评价耳机的音质。Formoretipsonevaluatingheadphones,seeAQuickGuideToHeadphonesandJudgingHeadphonesForAccuracy为评估耳机更多技巧上看到一个快速指南耳机和耳机判断的准确性。WheredoIbuythisbrandmodelofheadphones我在哪里可以买到这种模式的耳机品牌?HeadWizedoesnotrecommendretailersHeadWize不建议零售商。TheCommercialLinkspageincludesalistofretailers,whichisbynomeansexhaustive该商业联系页面包括一个零售商名单这绝不是详尽。Aswithanypurchaseofaudioequipment,theadvantagesofmailorder(lowerprices)mustbeweighedagainstthedisadvantages(nochancetoauditionbeforebuying,thedifficultyofobtainingcustomerservice,etc)对于任何音频设备购买邮购(低价格)的优势必须权衡缺点(没机会去试镜购买前获取客户服务等困难)。Ifbuyingthroughmailorderwithoutanypriorauditionoftheheadphonemodel,makesuretoconfirmreturnprivilegesincasetheyturnouttobeunsuitable如果通过邮购购买没有任何事先的耳机模式试镜一定要确认返程权限的情况下他们变成是不合适的。Howdodynamic(orelectrostaticorelectretorchanneloretc)headphoneswork如何动态(或静电或驻极体或通道或等)耳机的工作?Inthepastfewyears,theavailableheadphonetechnologieshavebothexpandedandcontracted在过去的几年里可用耳机技术兼具扩大和收缩。Ontheonehand,dynamictransducerheadphonesnowdominateallheadphonesales,withelectrostaticheadphonesbeingtheoneremainingformofaudiophileexotica一方面动态传感器耳机现在正在主宰所有剩下的一个新奇事物的形式静电耳机高保真耳机的销售。Competingtransducertechnologies,suchasisodynamicandelectrettypes,havevirtuallydisappearedfromthemarketplace竞争的传感器技术如等力和驻极体类型几乎已经从市场上消失。Ontheotherhand,thereisgreatdemandfornoisecancellingandsurroundsoundphones另一方面也为噪音取消和环绕声手机的需求量很大。Newdevelopmentsinheadphonedesignmayfinallymakevirtuallisteninganaffordablereality在耳机设计的新进展可能最终使虚拟听一个负担得起的现实。Formoreinformationabouthowheadphonetechnologieswork,seeAQuickGuideToHeadphonesandTechnologiesForSurroundSoundPresentationinHeadphones更多的工作有关如何耳机技术看到一个快速指南耳机和耳机环绕声技术呈报。Whydoheadphonessounddifferentfromloudspeakers为什么耳机的声音从扬声器不同?Soundfromloudspeakersisacousticallycontouredbythelistener'sheadandouterearsbeforereachingtheeardrums声音是从扬声器声学轮廓由听者的头部和外耳才到达耳膜。Thisinteractionprovidesspatialcues(intheformofcrossfeedandphaseandamplitudeshifts)whichareimportantforperceptionofDsound这种互动提供了空间线索(在互馈与相位及振幅的变化形式)它是三维声音感知的重要。Thesespatialcuesarecalledheadrelatedtransferfunctions(HRTFs)这些被称为空间线索头相关传输函数(HRTFs)。Becauseheadphonessitontopoftheears,thesoundgoesdirectlytotheeardrumswithoutanyHRTFtransformation因为耳机对耳朵上坐下声音直达没有任何的HRTF转型的耳畔。Lackingspatialcues,thebrainimagesthesoundfieldinsidethelistener'sheadinastraightlinebetweentheears由于缺乏空间感大脑内的图像听众的耳朵之间在直线头声场。Thereareheadphonedesignsandelectronicprocessorsthatcanmakeheadphonelisteningmorerealistic有耳机的设计和电子处理器可以使耳机听更现实。Formoreinformationaboutacousticperceptioninheadphones,seeTheElementsofMusicalPerception,ADAudioPrimerandThePsychoacousticsofHeadphoneListening欲了解更多信息感知耳机在大约声看到感知音乐的元素一个D音频底漆和心理声学的听力的耳机。HowdoIevaluateheadphones,iftheysounddifferentfromnormalhearing我如何评价耳机如果他们听到不同的声音从正常吗?Audiophilequalityheadphonesareavailableforthepriceof"budget"bookshelfloudspeakers,anddeservethesameattentiontosoundqualitythatisgiventoloudspeakers高保真耳机为“预算”书架音箱的价格提供并且应该得到同样的重视音质是考虑到扬声器。Becauseheadphonespresentadistortedperspective,listenersmusttakeintoaccountvariouspsychoacousticfactorswhenjudgingsoundquality因为耳机目前扭曲的观点听众必须考虑到各种因素来判断心理声学音质。Thegoodnewsisthatunlikeloudspeakers,headphonesarenotaffectedbyroomacousticsanddonotrequireextensiveweighttrainingtoliftthem好消息是不像扬声器耳机不受房间声学不需要大量的举重训练解除他们。Foranindepthdiscussionaboutevaluatingheadphones,seeAQuickGuideToHeadphonesandJudgingHeadphonesForAccuracy对于有关评估耳机讨论的深入看到一个快速指南耳机和耳机判断的准确性。HowdoIevaluateheadphonesforPCgames我该如何评价游戏耳机的电脑?StateoftheartcomputergameshavespectacularDsoundeffects国家拥有最先进的电脑游戏壮观的D音效。WhenevaluatingheadphonesforPCgames,thebestapproachtoistotakeagamedemodiskorarecordingofsomesamplesoftheDgamesoundstotheaudiostoretoauditionwithheadphones当评估耳机PC游戏最好的办法是把一个游戏演示磁盘或D游戏的一些样品的声音录制到音频商店试听用耳机。Theabilitytoconveythedirectionalityofstationaryandmovingsoundsources(front,back,up,down,left,right)isimportantingamingheadphones传达的能力固定和移动声源方向(前后上下左右)在游戏耳机是重要的。Ingeneral,headphonesthatpresentagoodsenseofacousticspacewithmusicwillalsoperformwellwithgames一般来说耳机目前有音乐良好的声学空间感也将表现良好的游戏。Iftheheadphoneswillonlybeusedforgaming,somegamerswillselectheadphonesthatsoundespeciallygoodwithsoundeffects(forexample,averystrongbassresponse),althoughtheymightnotbeassuitableforgenerallistening若耳机将只用于游戏使用有些玩家会选择耳机的声音特别是(例如一个非常强大的低音响应)声音效果不错虽然他们可能不适合作为一般的收听。Isthereasimplewaytoimproveinfrontlocalizationinstereoheadphones有没有简单的方法来提高定位在立体声耳机中前?Hereisasimplenocosttrickforgettingaheadphonesoundfieldtoseemmorelikeloudspeakersinfrontofthelistener:withsupraauralheadphones,resttheearcupsslightlylowerandforwardontheears这里是一个简单的无成本获取一个耳机声场显得在前面的监听扬声器更喜欢技巧:用超耳耳机其余的earcups略有降低耳朵上前进。Withcircumauralheadphones,trypositioningthemsuchthattheearcupspushthebackoftheearsforwardabit随着circumaural耳机他们尝试定位使得earcups推动前进的耳朵有点背。Ifthebackoftheearlobesarepushedtoofarforward,youmayheara"cupping"distortion如果耳垂的背后是尽量往前推你可能会听到一个“拔火罐”失真。Experimenttoobtainthebestlocalization(don'texpectmiracles,though)实验以获得最佳的本地化(不要期望奇迹虽然)。ThegoalistogetthesoundtoentertheearsatanangleandthusengagemoreoftheHRTFsofnormalhearing我们的目标是让声音进入耳朵的角度从而进行了听力正常的HRTFs更多。Thistechniqueworksevenbetterwithacrossfeedprocessor(formoreinformationaboutcrossfeedprocessors,seeFAQonacousticsimulatorsforheadphones)这种技术即使有更好的互馈处理器(如需互馈处理器的信息请参见常见问题耳机声模拟器)。FortrueDsoundinheadphones,seetheFAQonheadphonevirtualizers对于真正的D声音在耳机耳机virtualizers上看到的常见问题。Whattechnicalbooksaboutheadphonesdoyourecommend怎么样耳机的技术书籍你推荐什么?ThebesttechnicalreferenceisTheLoudspeakerandHeadphoneHandbookbyJohnBorwick(,nded)最好的技术基准是第版)扬声器和耳机由约翰博威克手册(。Eventhoughthecoverageofheadphonesisafractionofthatforloudspeakers,nootherbook(atleastnonethatthiswriterhasseen)isascomprehensive虽然耳机的覆盖面是该扬声器部分没有其他书籍(至少没有这个笔者看到的)是全面的。Thecurrentndeditionwasfirstpublishedin,andsomesections,suchastheoneonacousticsimulators,needrevision目前第二版创刊于年声如部分路段模拟器之一需要修改。AlsomissingisanydiscussionofIECstandardsforheadphones还缺少任何耳机IEC标准的讨论。Nevertheless,thisbookishighlyrecommended然而这本书是值得推荐。Thereisardeditionpublishedin有一个在年出版的第版。Ihavenotseenthiseditionyet我还没有看到这个版本呢。TheArtofSoundReproductionbyJohnWatkinson()isanexcellentreferenceaboutaudiotechnologygenerally下)约翰的声音再现的艺术由沃特金森(年是一个很好的参考关于音频技术一般。Unfortunately,theauthordevotesjustafewpagestoheadphones不幸的是作者用了短短数页的耳机。DSOUNDANDSURROUNDSOUNDINHEADPHONESD音效和环绕耳机中的声音Howcanstereoheadphonessoundmorelikeloudspeakers怎样才能扬声器立体声耳机的声音更象?Thesoundfieldofmostheadphonesformsinastraightlinebetweentheears,becauseheadphonelisteninglackstheheadrelatedandvisualcueswhichaidinspatiallocation大多数耳机在耳朵之间的直线形式声场因为缺乏耳机听头相关的援助和视觉线索在空间的位置。Acousticsimulatorsmakeupabroadcategoryofproductsthatelectronicallyrestorethesecuestomakeheadphonessoundmorelikeloudspeakers声学模拟器组成一个广泛的产品类别以电子还原这些线索使耳机的声音更喜欢扬声器。Therearemanytypesofstereoacousticsimulators,eachwithdifferentcircuitry有许多类型的立体声音响模拟器与每一个不同的电路。Simulatorscantrytorecreatethecomplexsoundfieldprojectedbyloudspeakers,usepsychoacousticeffectstofoolthelisteneroracombinationofboth模拟器可以尝试重新创建复杂的声场扬声器的预测利用心理声学效果愚弄听众或两者兼而有之。Thesimplestarecalledcrossfeedprocessorsandspatialexpanders最简单的是所谓的互馈处理器和空间扩展。Crossfeedprocessorsareanaloguecircuitsthataddinterauralcrosstalktoheadphonesoundfields(crosstalkexistswhensoundsthatreachoneeararealsopartiallyheardintheotherear)砂轮上处理器是模拟电路新增跨听觉串音耳机(串扰是指当声音达到一个耳朵也部分地在另一只耳朵听到的)声场。Theyrangeincomplexityfrompassivenetworkstomultistageopampfiltersthatreshapeandtimedelaythecrossfeed它们的范围从被动的复杂网络以多级运放滤波器重塑和时间延迟的互馈。Spatialexpandersemphasizeambienceinformationinthestereosignalsforamorespacioussound强调空间扩展为一个更宽敞的氛围在立体声音响信号的信息。Crossfeedfilteredsoundismorefocusedandmayhaveasenseofinfrontdepth砂轮上过滤声音更集中并可能有一个在前期深度感。Spatiallyexpandedsoundismorediffusewithanecholikecharacteristic空间膨胀声音更加具有回声般弥漫的特点。Neitherwillproduceabelievableillusionoflisteningtoloudspeakers,althoughtheycanmakeheadphonelisteningmorepleasant也不会产生听扬声器可信的错觉虽然他们可以更舒适的耳机收听音乐。ThebestwaytogetloudspeakerlikesoundistouseaheadphonevirtualizersuchDolbyHeadphone,WOWfromSRSLabsorNaturalHeadphonefromSpatializerLabs最好的办法让喇叭般的声音是使用SRS实验室的或自然的Spatializer实验室耳机耳机虚拟器如杜比耳机哇。VirtualizershavemoresophisticatedelectronicstoproducethemostrealisticandconvincingDsoundfieldsinheadphonesVirtualizers有更精密的电子生产的最现实最令人信服的三维声场的耳机。Theperformanceofavirtualizercanbelistenerdependent,becauseeveryone'shearingcharacteristicsareslightlydifferent一个虚拟器的性能可以监听相关的因为每个人的听觉特性略有不同。Headphonevirtualizerscancreatetheillusionoflisteningtoamultichannelloudspeakersetup,andforthatreason,theyarepopularinDVDplayers(andespeciallysoftwareDVDplayers)耳机virtualizers可以建立听多通道扬声器设置幻觉因为这个原因他们在DVD播放器(特别是软件和DVD播放器)的欢迎。Therearestereovirtualizerplugins(theseacceptabasictwochannelinput)thatworkwithpopularsoftwareaudioplayerssuchasWinampandtheWindowsMediaPlayer有立体声虚拟器插件(这些接受基本的双通道输入)与流行的软件如Winamp和WindowsMediaPlayer音频播放器的工作。Becauselowcoststereovirtualizerchipshaveonlyrecentlyhitthemarket,OEMshaveannouncedthattheywillbeincorporatedintogeneralconsumerelectronicsproducts(suchasportableplayers)inlateorearly由于低成本的立体虚拟器芯片最近才进入市场OEM厂商宣布他们将被纳入到一般消费性电子产品(如便携式音乐播放器)在年底或年初。HeadphonevirtualizerscanbefoundinPCsoundcards耳机virtualizers可以在PC声卡。Becarefultodistinguishbetweenvirtualizersforforheadphonesandforloudspeakers(virtualizersforloudspeakersgeneratesurroundsoundfromstereoloudspeakers)要小心区分之间virtualizers耳机和扬声器(扬声器virtualizers产生的环绕立体声扬声器的声音)。Formoreinformationaboutacousticsimulation,seetheFAQsonplayingsurroundsoundrecordingsinheadphonesandonspatialexpanders,AQuickGuideToHeadphoneAccessoriesandTechnologiesForSurroundSoundPresentationinHeadphonesandThePsychoacousticsofHeadphoneListening欲了解更多信息模拟声看到空间扩展的常见问题上的录音播放耳机和环绕一个快速指南耳机配件和技术演示中的环绕声耳机和心理声学的耳机聆听。FormoreinformationaboutDhearing,seeTheElementsofMusicalPerceptionandADAudioPrimer,VirtualAudioForHeadphones欲了解更多关于D听觉信息请参阅感知音乐的元素和一个三维音效底漆虚拟音频耳机。CanIplaysurroundsoundrecordingsinheadphones我可以玩录音制品中耳机环绕?Yes是的。Oncethesurroundrecordingisdecodedintoitsdiscretechannels(eg,channelorchannelsurround),theaudiocanbelistenedtowithmultichannelheadphonesorwithregularstereoheadphonesandavirtualizer一旦环绕声录制成其离散通道(例如声道或声道环绕立体声)音频可以收听到多声道耳机解码或与普通立体声耳机和一个虚拟器。Multichannelheadphoneshaveormoretransducersarrangedtomimicasurroundloudspeakersetup多声道耳机有个或更多的传感器安排模拟环绕扬声器设置。However,becausethetransducersarepositionedveryclosetothelistener'sears(resultinginalossofspatialcues),mostmultichannelheadphoneswillstillrequireadditionalelectronicprocessingtoachieverealisticDsound但是由于传感器是定位非常接近听众的耳朵(在空间线索损失)大多数多声道耳机仍然需要额外的电子化处理实现逼真的三维音效。VirtualizersaresophisticatedtypesofacousticsimulatorsthatcanmakeheadphonesseemlikelisteningtoloudspeakersVirtualizers是声学模拟器可以让喜欢听耳机扬声器显得复杂的类型。Theyworkbycreatingavirtualmultichannelspeakersetupinsideheadphones他们的工作创造一个虚拟的多通道内耳机扬声器设置。Therearenumeroussurroundvirtualizertechnologies(suchasDolbyHeadphone,SpatializerNaturalHeadphoneandSRSLab'sWOWprocessing)thatarefeaturesofvideoandaudioplayersespeciallysoftwarevideoandaudioplayers有许多环绕虚拟器技术(如杜比耳机Spatializer自然耳机和SRS实验室的WOW处理)它们的视频和音频播放功能特别是软件的视频和音频播放器。PowerDVDandWinDVDaretwoexamplesofsoftwareDVDplayerswithDolbyHeadphonePowerDVD及WinDVD为两种软件与杜比耳机的DVD播放机的例子。HowwellavirtualizerimagesdependsonthetechnologyandhowwellitcangeneratethespatialcuesthatalistenerneedstohearinD如何以及虚拟器图像取决于技术和如何以及它能够产生空间感一个听众需要听到在三维。Forexample,ifavirtualizercannotsimulateheadmovement,somelistenerswillhearaflatsoundfieldregardlessofanyprocessingdonetothesignal例如如果一个虚拟器无法模拟头部运动有些听众会听到一个平面的声场无论做任何处理的信号。Becarefultodistinguishbetweenacousticsimulationforforheadphonesandforloudspeakers(acousticsimulationforloudspeakersgeneratessurroundsoundfromstereoloudspeakers)要小心区分之间的声学仿真耳机和扬声器(喇叭声的模拟环绕立体声扬声器产生的声音)。Formoreinformationaboutacousticsimulationandvirtualizers,seetheFAQregardingacousticsimulators,AQuickGuideToHeadphones,AQuickGuideToHeadphoneAccessoriesandTechnologiesForSurroundSoundPresentationinHeadphones欲了解更多的信息有关声学仿真和virtualizers参阅常见问题关于声学模拟器一个快速指南耳机一个快速指南耳机配件和技术演示中的环绕声耳机。Whatisabinauralrecording什么是双耳录音?Regularstereorecordingsaremeanttobeplayedbackthroughloudspeakers普通立体声录音目的是通过扬声器播放回来。Theydonotimagecorrectlyinheadphoneswhichlacktheheadrelatedtransferfunctions(HRTFs)thatinfusesoundwithspatialcues(seeFAQonwhyheadphonessounddifferentfromloudspeakers)他们不缺乏正确的耳机头相关传输函数(HRTFs)的注入空间感的声音(见为什么耳机的声音从扬声器不同的常见问题解答)图像。Binauralrecordingsarerecordedwithapairofmicrophonespositionedneartheartificialearsofadummyhead双耳录音记录了近一个空头部位置的人工耳麦克风对。Whenheardthroughheadphones,theyimagewithgreatrealism,becausetheHRTFsofthedummyheadprovidethespatialcues当通过耳机听到非常现实他们的形象因为假人头部HRTFs提供空间线索。Howwelltheyimagedependsonhowcloselytheshapeofthedummyheadresemblesthelistener'sheadandonthepositioningofthemicrophones以及他们的形象如何取决于如何密切假人头部形状酷似听者的头部和麦克风的位置。Somebinauralrecordingscanbeplayedbackoverloudspeakerswithaslightdegradationofthesoundfield有的双耳录音可通过扬声器播放回来的声场略有下降。Formoreinformationaboutbinauralrecordings,seeTakingSoundInAnotherDirection如需有关记录双耳见以声音在另一个方向。HeadWizealsohasprojectplansforbuildingabinauralheadsettomakebinauralrecordingsHeadWize也有项目计划建设一个双耳耳机使双耳录音。CanIplaybinauralrecordingsthroughloudspeakers我可以通过扬声器播放录音双耳?Yes是的。Mostmodernbinauralrecordingsarecompatiblewithloudspeakerswithlittleornodegradationinsoundquality大多数现代双耳录音与很少或根本没有在声音质量下降扬声器兼容。Thecompatibilityresultsfromtheplacementofthemicrophonesonthedummyhead从对假人头部的麦克风放置的相容性结果。Forheadphoneonlybinauralrecordings,themikesareplacedovertheearsandfacingoutward对于耳机只有双耳录音的麦克风放置在耳朵和朝外。Inthecaseofloudspeakercompatiblerecordings,themikesarepositionedneartheearsandfacingforward在扬声器兼容录音的情况下麦克风的位置靠近耳朵面向未来。Afewlistenersfeelthattheheadphoneonlyrecordingsimagebetter一些听众认为耳机只录制的图像更好。Atransauralprocessorcanfilteroutinterauralcrossfeedinabinauralrecordingforimprovedimagingthroughloudspeakers阿transaural处理器可以过滤掉在通过扩音器改善成像双耳互馈记录双耳。Standalonetransauralprocessorsarerare,butaheadphonespatialexpanderoranysurroundeffectsdecoderthatusesinvertedcrossfeed("ambienceenhancement")mighthavesimilarbeneficialeffects独立transaural处理器是罕见的但空间扩展器或耳机环绕声效果的任何解码器采用倒互馈(“氛围强化”)可能也有类似的有利影响。SchematicsforspatialexpanderscanbefoundintheHeadphoneAccessoriesFAQs空间扩展原理图中可以找到的耳机配件常见问题。Buildabinauralmicrophoneheadsettomakebinauralrecordings建立一个双耳耳机麦克风使双耳录音。Also,tryplayingbinauralrecordingsinsurroundsystemsusingasurrounddecoderforstereorecordings(whichworkbydirectingambienceinformationtotherearchannels)另外尝试玩双耳环绕录音系统采用环绕立体声录音解码器(即通过引导环境信息的渠道向后方工作)。TheDynacoHaflerpassivesurroundcircuitisaninexpensiveandeffectiveconfiguration该DynacoHafler被动环绕电路是一种廉价而有效的配置。Moresophisticatedsurrounddecoderswillprobablyhaveambiencebaseddecodingasadefaultoption(forexample,DolbyLabsrecommendsleavingitsProLogicdecodersonwhenplayingregularstereorecordingsforasurroundlikeeffect)更先进的环绕声解码器将可能有气氛的解码作为默认选项(例如杜比实验室的建议离开时在播放普通立体声录音其定向逻辑环绕声解码器类似的效果)。WhatareotherDheadphonerecordingformats(holophonics,ambisonics)什么是其他D耳机录音格式(holophonicsambisonics)?Besidesbinaural,nootherheadphonespecificrecordingformathasmetwithanysuccessinthemarketplace此外双耳没有其他耳机专门记录格式有遇到任何在市场上取得成功。However,thesetechnologiesareimportant,becausetheymaybeabletoimprovetheplaybackofstandardstereoandsurroundrecordingsinheadphones但是这些技术很重要因为他们可以提高标准立体声耳机播放和录制环绕。HolophonicsandambisonicsareprobablythebestknownofthesealternativerecordingformatsHolophonics和ambisonics可能是最好的这些替代录制格式而闻名。HolophonicsappearstobeavariationofbinauralrecordingdonewithaspeciallyconstructeddummyheadandtheuseofareferencetoneduringtherecordingprocesstoenhancespatialcuesHolophonics似乎是与一个专门建造的假人头部和一个参考音在录制过程中使用以提高空间感的录音进行双耳的变化。Theaudiocommunitycontinuestodebatethemeritsofholophonicsoverstandardbinauralrecording音频社会继续争论标准双耳记录holophonics的优点。Ambisonics(alsocalledBFormat)isatechnologyforrecordingandmanipulatingsoundfieldsAmbisonics(也称为B格式)是一种用于记录和处理声场技术。Fourmicrophoneswithfigurepickuppatternsrecordsoundonthex,y,zandw(omnidirectional)axes四与图皮卡模式的XYZ轴和W(全方位)轴录音麦克风。Onplayback,adecodertransformsthesedirectionsofsoundintoanynumberofrepresentations(channelstereo,channelsurround,channelsurround,etc)在回放解码器转换成任何的申述数目(声道立体声四声道环绕六声道环绕等)这个方向的声音。Forheadphonelistening,thedecoderoutputsachannelsignalwhichisthenbinaurallyfilteredwithspatialcues对于耳机收听音乐解码器输出的双通道信号然后binaurally与空间感的过滤。Unlikeothersurroundformatdecoders,anambisonicdecodercansimulateheadmovementbyrotatingthex,yandzcomponentspriortobinauralfiltering不像其他的环绕声格式的解码器解码器可以模拟一个ambisonic通过旋转的xy和z组件头部运动之前双耳过滤。Therefore,thebinauralfiltercanbestaticwithasingleEQmodifiedHRTFtosimulateheadmovement因此双耳过滤器可以用一个均衡改造的HRTF静态模拟头部运动。AnambisonicdecodercanstoremanymoreHRTFpatternsthanadynamicHRTFdecoder,andsohasthepotentialofbeingcompatiblewithmorelisteners一个ambisonic解码器可以存储比一个动态的HRTF解码器有更多的HRTF的模式因此有更多的听众被兼容的潜力。Formoreinformationaboutambisonics,seeCreationManipulationAndPlaybackOfsoundfields如需ambisonics信息请参阅播放声场和创作手法。Formoreinformationaboutheadphonesurround,seeTechnologiesForSurroundSoundPresentation

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