Video: Peak hauv suab yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
A ncov ' meter ' yog ib hom kev ntsuas ntsuas uas qhia pom qhov pom ntawm theem tam sim ntawm ib qho suab teeb liab uas dhau los ntawm nws (ib lub suab ntsuas ntsuas). Nyob rau hauv soundreproduction, lub meter, seb ncov los yog tsis, feem ntau txhais tau hais tias sib haum mus rau lub suab nrov ntawm ib qho kev qhia tshwj xeeb.
Tsis tas li ntawd, qhov siab tshaj plaws suab yog dab tsi?
Peak theem yog qhov ntsuas instantaneous ntawm qib . Nws tseem ceeb heev vim nws qhia peb paub qhov siab tshaj plaws qib ntawm suab thiab nyob ze npaum li cas rau lub qab nthab, lossis qhov siab tshaj plaws tso cai qib ua ntej distortion. Average qib yog qhov ntsuas qhov nruab nrab lub zog uas tshwm sim dhau lub qhov rais ntawm lub sijhawm.
Ib tug kuj yuav nug, RMS qib hauv suab yog dab tsi? Lub ncov tus nqi yog qhov siab tshaj qhov hluav taws xob uas lub waveform yuav puas tau mus txog, zoo li lub ncov yog qhov siab tshaj plaws ntawm lub roob. RMS (Root-Mean-Square) tus nqi yog tus nqi zoo ntawm tag nrho cov waveform. Nws yog sib npaug rau cov qib ntawm DCsignal uas yuav muab tib lub zog nruab nrab raws li lub caij nyoog.
Ib yam li ntawd, nws puas zoo rau normalize suab?
Rau normalize suab yog hloov nws tag nrhovolume los ntawm tus nqi tas mus kom txog qib phiaj xwm. Nws tsis cuam tshuam rau kev ua haujlwm zoo li compression, thiab qhov zoo tshaj plaws tsis hloov lub suab hauv txhua txoj kev uas tsis yog hloov pauv nws cov ntim.
Qhov tseeb ncov txhais li cas?
Qhov siab tshaj plaws ntawm cov teeb liab analog mus txog yog hu ua tseeb ncov thaum lub siab tshaj plaws cov qauv yog hu ua cov qauv ncov . Txij li thaum lub teeb liab digital yuav tsum tau hloov mus rau analog teeb liab kom hnov, lub tseeb ncov yog ib ntau dua metric rau cov ncov theem ntawm awaveform.
Pom zoo:
Lub suab qab zib yog dab tsi hauv phau Vajlugkub?
Lo lus xaiv ib tsob nroj Oriental hu ua tus chij qab zib,' Acorus calamus ntawm Linnaeus. Nws nyob lwm qhov uas hu ua 'qab zib' (Yaxayas 43:24; Yelemis 6:20) Nws muaj ntxhiab tsw qab, thiab thaum nws cov pob txha stalk raug txiav thiab qhuav thiab txo mus rau hmoov, nws tsim cov khoom muaj txiaj ntsig zoo tshaj plaws hauv cov tshuaj tsw qab
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