喇叭声音与尺寸大小的关系.docx

喇叭声音与尺寸大小的关系.docx

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喇叭声音与尺寸大小的关系

喇叭声音与尺寸大小的关系

Ifyouwanttohavebigsoundpressure,youneedtopushmoreairmoleculesinmoreenergyperunittime,

Inthetwodimension,theareaofthediaphragmforthe15mmhornisabout7.5*7.5*3.14=176mmsquare,

The20mmis（10*10*3.14=314mmSquare）,20mmindiameter,althoughthehornisonly5mm/25%largerinsize,

Butthesurfaceareaofthediaphragmis78%largerthanwhenwegivethetwospeakersthesamepower,

Thesizeofthesoundsyouhearwillbeverydifferent,becausethe20mmspeakerscanbeatthesametime,

Pushmoreairmolecules

Andthebiggerthesize,thelowerfrequencyresponseisusuallygood,andthesoundsthehumanearfeelsarebetter,

Ofcourse,wecanalsogivethetrumpetmorepower,sothatitproduceshighersoundpressure,butislimitedto

Bearingcapacityof1.diaphragm,

2.heatdissipationcapabilityofloudspeaker,

3.changesinfrequencyresponsecharacteristicsafterpoweramplification（thediaphragmneedsthickeningandthecoilbecomesheavy...）.

Therefore,wehavetoimprovethestructureofthematerial,thehorn,asfaraspossibletosmallspeakers,bigsound,

Butifthesizepermits,changethetrumpetnumberone,youcanimmediatelyimprovethevoiceproblem.

Factorsthataffectthesizeofsound

Diaphragmarea,amplitude,magneticfieldstrength,power,impedance,soundcavitysize,diaphragmpattern/thickness,opening.PowerVS.volumeunderthesameconditions,powerincreases,doesnotmeanthatthevolumewillincreasesynchronously.Becauseofchangesindiaphragmandvoicecoil,atthesameinputsignal,sometimesthevolumewillbesmaller.

SizeVS.thebiggerthevolume,themoreairitcanvibrateatthesametime,sothevolumewillbebigger.Thethickerthehorn,itusuallymeansthatthereisalargeramplitude,andthesoundwillbebigger.

Soundqualitysmallspeakersbasicallydonotdiscussthesoundquality,buttrytomakethevolumehigher.

Thepowerofthematchedamplifyinglineisbetterthanthehorn,andtheratedpowerwillbebetter.

Generallyspeaking,thesizeofthesoundcavityintheconsumerproductshastheproblemthatthesoundcavityisnotbigenough.Onlytheemptyplacescanbefoundasmuchaspossible,andthevolumeofthesoundcavitycanbeincreased.

Theopeningratemustbeatleast1/8ofthediaphragmarea,andthefrontandbacksoundfieldsofthehermetichornshouldbecompletelyspacedsoasnottocanceleachother;

Becauseofthesoundproducedbytheloudspeaker,theshockabsorbercanalsogeneratevibration,andthebestbuffermaterialisprovidedbetweentheshellandthecase,soastoavoidgeneratingnoise.Fixedspeakersareusuallyfixedonthecase,theneedtopayattentiontoreliability,especiallyironorlargersize,soasnottofallofftest.

Inthepremiseofallconditions,ifthedrivingcircuitprovidesforvoltage,thesoundofthehornisrelativelylarge,butifthevoltagedrivingcircuitcanprovideisthesame,thechangeontheratedpowerofthegreaterhorn,therewillbetheso-calledpushinsoundbutwillbesmaller.

Forexample,onlya8ohm1Wpowerline,wantmoreloudlyandchangewiththe2Whorn,butquietly,becausewiththeincreaseofpowerdesign,membraneloudspeakerneedsthickened,voicecoilmayalsoneedathickline,morecoarselineimpedancewilldecrease,butmorearoundalittlelongerthequalityofthevoicecoilismoreimportant,thesechangeswillmakethehornefficiencyvariation,orquietlywesay,ifwechangewiththepowertobearsmalleroralittlelowimpedanceloudspeaker,

It'spossibletospeakalittlelouder,butbecarefulthatthespeakersdon'tbreakorevenburndown.

Thecausesofbrokentone/abnormalsoundinloudspeakersare

analyzedfromthereasonsofusers'use:

Thehornisbelongstothepassivecomponents,whatthesoundwillbeissuedisdeterminedbythedrivingcircuitofthehorn,thehorngiventhecorrectpowerwaveformisthemostbasicrequirements,thepoweristoolargewillresultinexcessivediaphragmamplitude,therewillbeaslightdistortion,theworstcasediaphragmwillhitthemechanismormagnetthatresultedinabrokenvoice;

Thebasicwaveformofthedrivehornisstringwave,andifgiventootherwaveformssuchasFangBo,thehornwillbecomelessefficientandeasytoheat,andmayalsoproduceabrokensound;

Thespeakerdesignproductoftheinstitutionwillalsoaffectthehornsound,theresponsecurveofappropriatespeakerscanimprovethehorn,trumpetsoundholehasthebestopeningrateofmorethan1/8,thespacebetweentheleftdiaphragmvibrationandthecasingandthediaphragm,inordertoavoidthesoundwhenhitbyshellandnoise.

Thesizeofmicrospeakers:

size,hasadecisiveeffectonthevolume,diameteris5mm,themembraneareamayhavesenthalf（15-20mm）,sothevolumeisverydifferent.Inaddition,thethickerthehorn,becausethereisalargespacetobevibration,usuallywithalargemagnetso,thereismorepowertopromotetheair,haveagreatervoice.

Power:

mainlyreferstothepowerofthehorncanwithstand,andthesizeofthevolumeandthereisnoabsoluterelationship,thegreaterthepowerrequiredbythediaphragmhorn,morethick,

moreroughvoicecoil,towithstandthebigpower,sotheefficiencywillbereduced（voice）,thecoordinationmechanismdesign,trytousealargersize,canchooseandenlargethepoweroutputmatchingcircuit,makethegreatestsound.

Impedance:

impedanceishigh,themorepower,butthevolumewillbesmaller,andcanwithstandthepowerwillbecomesmaller,becausethethinline（withthenecessarypowersmaller）,ormorearoundthecircle（quality,efficiency）.

Diaphragmpattern:

voicehorndiaphragmcanbeusedwithconcentricpattern,usuallyinthe5-6KHzbeforethesoundpressureisrelativelylarge,butafter6KHz,willfallquickly.Butthediaphragmradialradiatepatternoverallfrequencyresponseislowerthantheaverage,inotherconditionsarethesame,undertheassumptionof6KHzbeforethevolumewillbelowerthantheconcentriccirclepattern.

Vibrationfilmmaterial:

50mmbelowMylarmostlyusedasvibrationfilmmaterial,becauseeasyprocessing,waterproof,lowcost,butlessheat,thesoundqualityismorerigid.

Althoughanyspeakerhasitsstrengthsandweaknesses,especiallyonalimitedbudget,cheapspeakersarenoteasytogetperfectresults,butwhetherthespeakeratanypriceandlevel,havecertainreferencestandardsorreferencedirection.

1.testlowfrequencyquality

Thelowfrequenciesproducedbypoorspeakerscanbe"deaf",

butcompletelybloated,loose,lackinginlayeringandstrong.Thelowfrequencyshouldbecleanandcrisp,clear,notsloppy,theghostdoesnotspreadlike,eventhoughavarietyofmusicalinstrumentssuchasthesizeofthelowfrequencybassguitarandPianodrums,bass,caneasilydistinguish.Sodon'tbeeasilydeceivedbythelowfrequencysenseofquantity,inferiorfrequencyisnotasnaturalasthesoundofclean.

Two

Testthevoiceoftheintermediatefrequency

Voiceisthemostcommonlyheardvoice,thequalityisnotdifficulttodetect,payattentiontowhetherornotthevoiceoftheunusualnasalsoundorthesenseofbeingclosedmouthsounds.Somespeakers'boxnoisealsogreatlyinterfereswiththeintermediatefrequency,makingthebandsoundblurry.Ifcolourationscomparedtootherfrequencynoisepollutionismoreserious,becausethemostaudiblesoundfrequency,orfrequencyofmusicareconcentratedintheintermediatefrequencyrange,whichisalmostallkindsofmusic,willbecometheobstacletothereplay.

3.testhighfrequencyflexibility

Poorhighfrequencyisthesharpinsertionoftheeartoheartheheadsplitting;inextremecasestheviolinorsopranobelcantobecomesthesharpnoiseofthebrakes.Similarly,differentmusicalinstrumentsinhighnotesproducedifferenttextures,andgoodtreblecandistinguishthem.Thehighfrequencyofthefirstandthesecondcanevendistinguish

betweenthetwodifferentwoodensoundsproducedbythetwodifferentyears.Themosteasytograspthekeyisgood,thetrebleisnotbacktopeoplelistenandintimidating,poreserect,wouldnotbeheardthemoretired,butitissoftandtoughandelastic,smoothandhighleveltothehighestpointcaneasilyhearnosound（ofcoursenottohandoutoftunesongtherecordingforreference）

4.testhighvolumeandtonefieldimages

Somespeakerswerestableatlowvolumes,butthevolumeindexwillbepromotedtoacertaindistortion,or"shot",theemergenceofvariousnonmusicsignalrecording,（ofcourse,butwith12pointsforthetestvolumesafetystandards）.Specifically,iforchestralmusicisoneofthemostdesirable,itmustpassthroughthispass.Speakersofstandardtoacertainextentdosoundfromthebox,createasoundfieldandclearimage,showingdifferentmusicalpointpositionandtexture,thereissufficientdiffusionandgrowth,broadandhighdegreebutaudiospace.Pianoandtailshouldbeclearlyheard,andinlargevolumeand"bursting"withoutdistortion,vocalandinstrumentalsoundisnotentangled.Highqualityreplaycanshowrichmusicalsenseandairfeeling,andthejumpingabilityofnotes,likethecloudandmist,seethebluesky,showingthewholemeticulousandorderlyaudio-visual.Andmoredirectly,itwon'tmakeyoutiredofhearing.

Physicalcharacteristicsofsound

Sound（Sound）:

apressurewavegeneratedbyshockinanelasticmedium（Elastic,Medium）

Wave（Wave）:

themannerinwhichenergyistransmittedfromonepointtoanother

Wavelength（Wavelength）:

thelengthoccupiedbyacycleinspace

Frequency（Frequency）:

thenumberofcyclescompletedinasecond