Lub ntsiab txhais ntawm lub suab ntsuas qhov ntsuas qhov hnyav yog dab tsi?
1. Lub suab nrov zaus hnyav
Cov ntsiab lus tseem ceeb ntawm lub suab ntsuas qhov ntsuas qhov ntsuas qhov hnyav yog hais txog qhov sib txawv ntawm nws qhov tsis tu ncua-amplitude khov kho-lub xeev sinusoidal input teeb liab theem thiab cov teeb liab qhia theem ntawm cov khoom siv ua haujlwm ntawm zaus, thiab qhov hnyav hnyav yog qhia hauv decibels (dB ) . Qhov ntsuas qhov hnyav ntawm lub suab ntsuas feem ntau muaj qhov hnyav A, B, C, thiab D, uas yog qhov sib txawv qhov hnyav sib txawv tsim nyob rau hauv lub voj voog ntawm lub suab ntsuas ntsuas kom simulate qhov sib txawv ntawm tib neeg hnov ntawm ntau zaus. Lub suab siab ntsuas ntsuas los ntawm qhov hnyav network hu ua qhov hnyav lub suab siab, xws li A-weighted suab siab, kuj hu ua A suab siab theem; lub suab siab theem uas tsis dhau los ntawm qhov hnyav network hu ua linear suab siab theem, thiab Z-weighted suab siab theem tam sim no siv lub siab theem sawv cev.
A, B, thiab C qhov hnyav raws li kwv yees peb qhov sib npaug-nruab nkhaus ntawm 40, 70, thiab 100 fangs. Txij li thaum A-hnyav tuaj yeem ua tau zoo dua cov yam ntxwv ntawm tib neeg lub pob ntseg, A-hnyav suab nrov feem ntau siv los sawv cev suab nrov hauv kev ntsuas suab nrov. Qhov loj ntawm C-weighted suab siab theem thiab Z-weighted suab siab theem feem ntau qhia raws li tag nrho cov suab siab theem nyob rau hauv lub suab ntsuas, thiab D-weighted yog mob siab rau kev ntsuas ntawm aircraft suab nrov.
2. Polarized condenser microphone, sensor
Classification ntawm microphones
Raws li lub hauv paus ntsiab lus ntawm lub suab-hluav taws xob hloov dua siab tshiab, nws muab faib ua: hom hluav taws xob (tsav coil hom, aluminium siv hom), capacitive type (DC polarization type), piezoelectric type (crystal type, ceramic type), electromagnetic type, carbon particle. hom, semiconductor hom tos.
Muaj ob hom condenser microphones, ib qho yog hom microphone, xws li lub microphone hauv KTV. Hom condenser microphone no siv lub roj teeb uas siv lub tshuab hluav taws xob condenser microphone, feem ntau yog AA roj teeb; Lwm hom condenser microphone yog lub kaw lus microphone, xws li lub kaw lus microphone hauv xov tooj cua studio thiab lub studio kaw. Lub condenser microphone no xav tau 48 volts ntawm phantom zog rau lub hwj chim mov.
Piv nrog rau lwm cov microphones, cov yam ntxwv ntawm condenser microphones yog:
1. Lub clarity ntawm lub suab yog qhov zoo
2. Nws muaj ultra-siab rhiab heev. Qhov laj thawj yog vim tias tsis muaj lub suab coil thauj khoom ntawm lub vibrating daim nyias nyias, nws tuaj yeem txais qhov tsim qauv nyias nyias thiab lub teeb, yog li tsis tsuas yog cov lus teb zaus yog qhov zoo tshaj plaws, tab sis kuj muaj qhov zoo heev rhiab heev, uas tuaj yeem hnov cov suab tsis muaj zog heev. thiab tso tawm qhov clearest, feem ntau ilv thiab meej thawj lub suab!
3. Cov zis suab zoo yog tag nrho thiab tuab tab sis tsis av nkos.
4. Ceev ceev cov yam ntxwv teb. Lub peev xwm los teb sai thiab maj mam rau lub suab tsis yog teb ntau dua li lwm cov microphones.
5. Nws muaj cov yam ntxwv ntawm ultra-tsawg kov suab nrov. Yog vim li cas yog lub diaphragm ntawm lub condenser microphone yog lub teeb, uas inherently muaj cov yam ntxwv zoo ntawm "ultra-tsawg kov suab".
6. Nws muaj cov yam ntxwv ntawm kev poob tsis kam thiab cuam tshuam tsis kam. Condenser microphones yog qhov me me thiab lub teeb hauv qhov hnyav vim yog ultra-thin diaphragm.
Dab tsi yog condenser microphone
Condenser microphones yog cov microphones zoo tshaj plaws rau kev kaw suab, thiab lawv cov kev siv suav nrog solo vocals, saxophone, flute, yeeb nkab lossis woodwind instruments, acoustic guitar, lossis acoustic bass. Condenser microphones yog tsim rau txhua lub sijhawm uas yuav tsum muaj suab zoo thiab lub suab meej. Vim lawv txoj kev tsim kho rugged thiab muaj peev xwm tswj tau lub suab siab, condenser microphones yog qhov kev xaiv zoo tshaj plaws rau kev siv lub suab los yog cov ntaub ntawv nyob.
Lwm qhov siv condenser microphone yog hu ua electret microphone. Lub electret microphone muaj cov yam ntxwv ntawm qhov me me, qhov ntau zaus, siab ncaj ncees thiab tus nqi qis. Nws tau siv dav hauv cov khoom siv hluav taws xob xws li cov khoom siv sib txuas lus thiab cov khoom siv hauv tsev. Lub diaphragm ntawm lub electret microphone tau raug rau high-voltage polarization kev kho mob thaum lub sij hawm tsim khoom, thiab yuav nqa tau ib yam nqi mus tas li, yog li tsis muaj ntxiv polarization voltage yuav tsum tau. Rau kev txav mus los thiab lwm yam yuav tsum tau ua, lub electret condenser microphone tuaj yeem ua me me, yog li nws yuav cuam tshuam rau lub suab zoo rau qee yam.
