Ntau tus neeg siv khoom ib txwm nug FMUSER txog qee qhov teeb meem ntsig txog kev xa xov. Ntawm lawv, lawv ib txwm hais lo lus distortion. Yog li dab tsi yog distortion? Vim li cas thiaj muaj distortion? Yog tias koj tab tom tsim lub xov tooj cua FM thiab tab tom nrhiav rau tus kws tshaj lij FM xov tooj cua transmitter, koj tuaj yeem tau txais qee cov lus qhia tseem ceeb ntawm nplooj ntawv no.

Cov ntsiab lus

Audio Distortion yog dab tsi?

Technically, distortion yog ib qho kev sib txawv ntawm lub suab waveform ntawm ob lub ntsiab lus hauv txoj kev teeb liab. Koj tuaj yeem nkag siab tias qhov kev hloov pauv yog hloov pauv tus qauv qub (lossis lwm yam ntxwv) ntawm ib yam dab tsi.

Hauv suab, distortion yog ib lo lus ntau dua li cov neeg feem coob paub thaum lawv siv nws.

Hauv kev sib txuas lus thiab khoom siv hluav taws xob, nws txhais tau tias hloov lub waveform ntawm lub teeb liab nqa cov ntaub ntawv hauv cov khoom siv hluav taws xob lossis kev sib txuas lus, xws li lub suab teeb liab sawv cev rau lub suab lossis video teeb liab sawv cev rau cov duab.

Thaum kaw thiab ua si, distortion yuav tshwm sim ntawm ntau lub ntsiab lus hauv lub suab teeb liab saw. Yog hais tias ib zaus (kuaj suab) raug ntaus hauv lub kaw lus thiab cov zis muaj ntau zaus, qhov tsis sib xws yuav tshwm sim. Yog hais tias ib qho kev tso zis tsis yog proportional rau qhov thov input teeb liab theem, nws yog suab nrov.

Feem ntau hais lus, txhua yam khoom siv suab yuav raug cuam tshuam rau qee qhov. Cov khoom siv nrog cov nonlinearity yooj yim yuav ua kom yooj yim distortion; Cov khoom siv nyuaj tsim cov kev sib txawv uas yooj yim dua rau hnov. Lub distortion yog cumulative. Siv ob qho khoom siv tsis zoo txuas ntxiv yuav ua rau muaj kev cuam tshuam ntau dua li siv cov cuab yeej ib leeg.

Txoj kev ntawm lub teeb liab distortion yog roughly tib yam li thaum daim duab dhau los ntawm ib tug qias neeg los yog puas lub lens, los yog thaum cov duab yog saturated los yog "overexposed".

Raws li qhov kev nkag siab no, yuav luag txhua qhov kev ua suab (sib npaug, compression) yog ib qho kev cuam tshuam. Qee qhov tshwm sim tau zoo. Lwm hom distortion (harmonic distortion, aliasing, clipping, crossover distortion) yog suav tias yog undesirable, txawm hais tias qee zaum lawv siv tau zoo thiab suav tias yog qhov zoo.

Vim li cas Distortion Matters?

Distortion feem ntau tsis xav tau, yog li engineers siv zog tshem tawm lossis txo nws. Txawm li cas los xij, qee zaum, kev cuam tshuam yuav tsum tau, piv txwv li, distortion kuj yog siv los ua suab paj nruag, tshwj xeeb tshaj yog nyob rau hauv hluav taws xob guitars.

Ntxiv suab nrov lossis lwm yam teeb meem sab nraud (humming, cuam tshuam) tsis suav tias yog kev cuam tshuam, txawm hais tias qhov cuam tshuam ntawm quantization distortion qee zaum suav nrog suab nrov. Cov kev ntsuas zoo uas muaj kev cuam tshuam lub suab nrov thiab kev cuam tshuam muaj xws li teeb liab-rau- suab nrov piv thiab distortion (SINAD) piv thiab tag nrho harmonic distortion ntxiv rau suab nrov (THD + N).

Hauv kev txo qis suab nrov, xws li Dolby system, lub suab teeb liab yuav tsum tau hais txog, thiab txhua yam ntawm cov teeb liab yog txhob txwm cuam tshuam los ntawm hluav taws xob nrov. Tom qab ntawd nws yog symmetrically "undistorted" tom qab dhau los ntawm lub suab nrov kev sib txuas lus channel. Txhawm rau tshem tawm cov suab nrov hauv lub teeb liab tau txais.

Tab sis kev hloov pauv yog qhov tsis txaus siab thaum lub rooj sib tham hu xov tooj vim peb xav kom lub suab zoo li qub li sai tau. Piv txwv li, nyob rau hauv cov suab paj nruag, distortion yuav impart tej yam ntxwv rau lub twj paj nruag, tab sis rau kev hais lus, distortion yuav ho txo ​​intelligibility.

Distortion yog ib qho kev sib txawv ntawm qhov zoo tshaj plaws suab nkhaus. Distortion ua rau cov duab ntawm lub suab waveform hloov, uas txhais tau hais tias cov zis txawv ntawm cov tswv yim.

Txhawm rau kom tsis txhob muaj kev cuam tshuam, kev tsim kho tshuab ntawm cov cuab yeej siv yog qhov tseem ceeb heev. Ib txwm siv cov qauv muaj zog thiab ruaj khov los tiv thaiv deformation. Kev siv cov khoom siv hluav taws xob kuj tseem tsim nyog. Lub teeb liab-rau-lub suab sib piv thiab cov yam ntxwv dynamic yuav tsum zoo heev, yam tsawg kawg ntawm CD zoo, rau nws ua haujlwm zoo.

Tsis tas li ntawd, cov neeg hais lus zoo tiag tiag uas tsis muaj kev cuam tshuam tsawg yog xav tau kom cov haujlwm xws li ncha tshem tawm tuaj yeem ua haujlwm raws li qhov xav tau.

Dab tsi ua Distortion?

Thaum cov zis ntawm lub cuab yeej suab tsis tuaj yeem taug qab cov tswv yim zoo kawg nkaus thiab raug, lub teeb liab yuav raug cuam tshuam. Cov khoom siv hluav taws xob ntshiab (amplifiers, DACS) ntawm peb cov khoom siv hluav taws xob feem ntau yog qhov tseeb dua li cov khoom siv hluav taws xob (hu ua transducers). Cov sensors hloov cov teeb liab hluav taws xob mus rau hauv kev siv tshuab ua suab nrov, ib yam li cov neeg hais lus - thiab rov ua dua, ib yam li microphones. Cov khoom txav thiab cov hlau nplaum sib nqus ntawm cov transducer feem ntau dhau los ua tsis muaj kab tawm sab nraum qhov nqaim ua haujlwm ntau. Txawm li cas los xij, yog tias koj thawb ib qho khoom siv hluav taws xob los ua kom lub suab nrov tshaj qhov nws muaj peev xwm, tej yam yuav pib zuj zus sai sai.

Hauv qab no yog cov ua rau distortion:

• Tsis muaj zog transistors / raj
• Overloaded ntawm circuits
• Cov resistors tsis raug
• Leaky coupling los yog leaky capacitors
• Kev sib piv tsis raug ntawm cov khoom siv hluav taws xob ntawm PCB

Distortion yog siv tswv yim hauv kev tsim suab paj nruag, tab sis nws yog lub ntsiab lus tiav hauv nws tus kheej. Qhov peb tab tom saib ntawm no yog qhov kev tsis sib haum xeeb hauv kev tsim suab - tseem hu ua playback txoj kev - txhais tau tias koj mloog li cas los ntawm cov neeg hais lus lossis lub mloog pob ntseg. Rau kev tsim cov suab nrov, qhov no yog lub hom phiaj tseem ceeb ntawm Hi-fi cov khoom. Tag nrho cov distortion yog suav tias yog phem. Lub hom phiaj ntawm cov tuam txhab tsim khoom yog txhawm rau tshem tawm kev cuam tshuam ntau li ntau tau.

Hom Distortion

• Lub amplitude los yog nonlinear distortion
• Zaus distortion
• Phase distortion
• Hla dhau distortion
• Nonlinear distortion
• Zaus distortion
• Phase hloov distortion

Qhov zoo tshaj plaws Low Distortion FM Transmitter Chaw tsim tshuaj paus

Raws li ib qho ntawm qhov zoo tshaj plaws-paub thoob ntiaj teb ua thawj coj xov tooj cua tshaj tawm cov khoom siv manufacturers thiab cov chaw muag khoom, FMUSER tau ua tiav ntau txhiab lub xov tooj cua tshaj tawm los ntawm ntau dua 200 lub teb chaws thoob ntiaj teb nrog kev cuam tshuam tsawg zog FM xov tooj cua transmitters, FM transmitting kav hlau txais xov, thiab ua tiav cov xov tooj cua turnkey, suav nrog kev txhawb nqa online thiab ua tiav cov kev pab cuam tom qab muag. . Yog hais tias koj xav tau tej ntaub ntawv hais txog lub xov tooj cua chaw nres tsheb buildup, thov koj xav mus rau hu rau FMUSER thiab peb yuav teb koj sai li sai tau!