Thu Nov 23 15:12:07 CST 2021
Cov ntsiab lus tseem ceeb ntawm condenser microphone yog lub taub hau ncej, uas yog tsim los ntawm ob lub yeeb yaj kiab hlau;Thaum lub suab nthwv dej ua rau nws qhov kev vibration, qhov sib txawv ntawm cov yeeb yaj kiab hlau ua rau qhov sib txawv capacitance thiab generates tam sim no.Vim hais tias tus ncej taub hau xav tau ib qho voltage rau polarization, condenser microphones feem ntau yuav tsum tau siv phantom fais fab mov los ua hauj lwm.Condenser microphone muaj cov yam ntxwv ntawm siab rhiab heev thiab siab ncaj qha.Yog li ntawd, nws yog feem ntau siv nyob rau hauv ntau yam kev suab paj nruag, zaj duab xis thiab TV kaw, uas yog heev ntau nyob rau hauv lub studio kaw.
Lwm hom condenser microphone hu ua electret microphone.Electret microphone muaj cov yam ntxwv ntawm cov ntim me me, ntau qhov sib txawv, siab ncaj ncees thiab tus nqi qis.Nws tau siv dav hauv cov khoom siv sib txuas lus, cov khoom siv hauv tsev thiab lwm yam khoom siv hluav taws xob.Thaum electret microphones raug tsim, lub diaphragm tau raug rau high-voltage polarization kev kho mob thiab yuav raug them mus tas li, yog li tsis tas yuav ntxiv cov polarization voltage ntxiv.Rau kev txav mus los thiab lwm yam yuav tsum tau ua, electret condenser microphone tuaj yeem ua tau me me, yog li nws yuav cuam tshuam rau lub suab zoo rau qee yam.Tab sis txoj kev xav, yuav tsum tsis txhob muaj qhov sib txawv ntau ntawm lub suab zoo ntawm electret microphones ntawm tib qhov loj thiab ib txwm siv condenser microphones dav siv hauv kev kaw suab.
Suav lub npe condenser microphone txawv teb chaws lub npe condenser microphone alias condenser microphone txoj cai ib qho tsis tshua muaj kub-plated zaj duab xis capacitor ob peb P farad sab hauv kuj g ohm theem nta pheej yig, me me ntim thiab siab rhiab heev
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1 txoj hauv kev ua haujlwm
2 nta
3 qauv
4 lub hom phiaj
Ua haujlwm hauv paus ntsiab lus kho thiab tshaj tawm
Condenser microphone
Condenser microphone
Lub suab khaws lub ntsiab lus ntawm condenser microphone yog siv cov yeeb yaj kiab uas tsis tshua muaj kub-plated ua ib tus ncej ntawm lub capacitor, sib cais los ntawm ob peb feem kaum ntawm ib millimeters, thiab lwm qhov ruaj khov electrode, thiaj li tsim tau lub capacitor ntawm ob peb P farads.Cov yeeb yaj kiab electrode hloov lub peev xwm ntawm lub capacitor thiab tsim cov teeb liab hluav taws xob vim qhov kev vibration ntawm lub suab yoj.Vim tias qhov capacitance tsuas yog ob peb P farads, nws cov kev tiv thaiv sab hauv yog siab heev, ncav cuag G ohms.Yog li ntawd, yuav tsum muaj ib lub voj voog los hloov G ohm impedance rau hauv qhov dav dav impedance txog 600 ohm.Lub Circuit Court no, tseem hu ua "pre amplification circuit", feem ntau yog ua ke hauv lub condenser microphone thiab xav tau "phantom fais fab mov" rau lub zog hluav taws xob.Vim tias muaj cov khoom siv hluav taws xob ua ntej no, condenser microphones yuav tsum tau siv los ntawm phantom fais fab mov kom ua hauj lwm ib txwm.Condenser microphones + phantom fais fab mov yog feem ntau rhiab heev, uas yog rhiab ntau dua li cov dynamic microphones.Hauv lwm lo lus, phantom fais fab mov yog tsim nyog rau condenser microphones los sau seb lawv puas siv rau hauv computers lossis lwm yam khoom siv, thiab lub suab kaw yuav tsis me dua li ntawm cov microphones dynamic.[1]
Feature editing thiab broadcasting
Hom microphone no feem ntau yog vim nws pheej yig, me me thiab siv tau zoo.Qee lub sij hawm nws tseem hu ua microphone.Lub hauv paus ntsiab lus tshwj xeeb yog raws li hauv qab no: ntawm ib txheej tshwj xeeb ntawm cov khoom, muaj tus nqi.Tus nqi ntawm no tsis yooj yim tso tawm.Thaum tib neeg tham, zaj duab xis raug nqi vibrates.Yog li ntawd, qhov kev ncua deb ntawm nws thiab ib lub phaj yog hloov tas li, uas ua rau muaj kev hloov pauv ntawm cov capacitance.Tsis tas li ntawd, txij li cov nqi ntawm nws tseem tsis hloov pauv, qhov voltage kuj tseem yuav hloov raws li q = Cu, nyob rau hauv txoj kev no, lub suab teeb liab hloov dua siab tshiab rau hauv hluav taws xob teeb liab.Cov teeb liab hluav taws xob no feem ntau yog ntxiv rau FET hauv lub microphone kom nthuav dav cov teeb liab.Thaum txuas rau hauv Circuit Court, xyuam xim rau nws txoj kev sib txuas kom raug.Tsis tas li ntawd, piezoelectric microphones kuj tau siv nyob rau hauv qee cov khoom siv qis kawg.Raws li pom hauv daim duab 1.
Cov ntsiab lus tseem ceeb ntawm condenser microphone yog lub taub hau theem, uas yog tsim los ntawm ob lub yeeb yaj kiab hlau;Thaum lub suab nthwv dej ua rau nws qhov kev vibration, qhov sib txawv ntawm cov yeeb yaj kiab hlau ua rau qhov sib txawv capacitance thiab generates tam sim no.Condenser microphones feem ntau xav tau 48V phantom fais fab mov, microphone amplification khoom lossis tov khoom ua haujlwm.
Condenser microphone yog ib hom microphone qub tshaj plaws, uas tuaj yeem taug qab mus rau thaum ntxov xyoo pua 20th.Piv nrog rau lwm hom microphones, cov qauv siv tshuab ntawm condenser microphones yog qhov yooj yim tshaj plaws.Nws yog tsuas yog muab ib daim nyias nyias diaphragm rau ntawm daim hlau hu ua lub phaj nraub qaum, thiab siv cov qauv no los ua ib qho yooj yim capacitor.Tom qab ntawd siv qhov hluav taws xob sab nraud (feem ntau yog phantom fais fab mov, tab sis feem ntau condenser microphones kuj muaj lawv tus kheej lub hwj chim mov ntaus ntawv) los muab lub hwj chim rau lub capacitor.Thaum lub suab siab ua rau ntawm lub diaphragm, lub diaphragm yuav ua rau ntau yam kev vibrations me ntsis nrog rau lub waveform, thiab tom qab ntawd qhov kev vibration no yuav hloov cov zis voltage los ntawm kev hloov ntawm capacitance, uas yog lub teeb liab tawm ntawm lub microphone.Qhov tseeb, capacitance Microphones kuj tuaj yeem muab faib ua ntau hom, tab sis lawv cov ntsiab lus tseem ceeb ua haujlwm yog tib yam.Tam sim no, nrov tshaj plaws condenser microphone yog U87 tsim los ntawm Neumann.[2]
Cov qauv kho thiab tshaj tawm
Txoj cai ntawm condenser microphone
Txoj cai ntawm condenser microphone
Cov qauv dav dav ntawm lub condenser microphone tau pom nyob rau hauv daim duab "lub ntsiab lus ntawm condenser microphone": ob daim hlau electrode ntawm lub capacitor tau muab faib ua ob ntu, uas yog hu ua diaphragm thiab rov qab electrode feem.Ib lub diaphragm microphone ncej taub hau, diaphragm thiab nraub qaum ncej yog nyob rau ntawm ob sab raws li, ob chav diaphragm ncej taub hau, nraub qaum ncej yog nyob rau hauv nruab nrab, thiab diaphragm nyob rau ntawm ob sab.
Kev ncaj qha ntawm condenser microphone yog ua tiav los ntawm kev ua tib zoo tsim thiab debugging ntawm txoj kev acoustic nyob rau sab nraud ntawm lub diaphragm, uas ua lub luag haujlwm zoo hauv ntau lub sijhawm kaw, tshwj xeeb tshaj yog ib txhij thiab nyob kaw.
Feem ntau hais lus (nrog rau qhov tshwj xeeb), condenser microphones yog qhov zoo tshaj rau cov microphones dynamic nyob rau hauv rhiab heev thiab nthuav dav-frequency (qee zaus tsawg zaus) teb.
Qhov no muaj feem xyuam rau txoj hauv kev ua haujlwm uas condenser microphones yuav tsum hloov cov suab paj nruag ua ntej.Feem ntau, lub diaphragm ntawm condenser microphones yog nyias heev, uas yog ib qho yooj yim rau co nyob rau hauv lub zog ntawm lub suab, uas ua rau qhov sib hloov ntawm voltage ntawm lub diaphragm thiab lub rear phaj ntawm lub diaphragm compartment.Qhov kev hloov hluav taws xob no yuav ua kom nrov los ntawm lub preamplifier thiab tom qab ntawd hloov mus rau hauv lub suab teeb liab tawm.
Tau kawg, lub preamplifier hais txog ntawm no yog hais txog lub amplifier ua rau hauv lub microphone, tsis yog "preamplifier", uas yog, lub preamplifier ntawm lub tov khoom lossis interface.Vim hais tias thaj tsam diaphragm ntawm condenser microphone yog me me, nws yog qhov rhiab heev rau cov suab qis lossis cov suab nrov nrov.Nws muaj tseeb.Feem ntau condenser microphones tuaj yeem ntes cov suab nrov uas ntau tus neeg hnov tsis tau.[2]
Lub hom phiaj kho qhov tshaj tawm
Condenser microphone yog lub microphone zoo tshaj plaws rau kev kaw.Nws siv xws li solo, saxophone, flute, steel yeeb nkab lossis woodwind, acoustic guitar lossis acoustic bass.Condenser microphone yog tsim rau txhua qhov chaw uas lub suab zoo thiab lub suab xav tau.Vim nws cov qauv rugged thiab muaj peev xwm los tuav lub suab siab, condenser microphones yog qhov kev xaiv zoo tshaj plaws rau kev siv lub suab los yog cov ntaub ntawv nyob.Nws tuaj yeem khaws cov ko taw nruas, guitar thiab bass hais lus.[3]
Post lub sij hawm: Aug-28-2023