2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Lub Nyquist Sampling Theorem hais tias: Ib lub sijhawm sib txuas tsis tu ncua tuaj yeem ua qauv thiab rov tsim kho zoo los ntawm nws cov qauv yog tias tus qauv waveform tau coj mus kuaj ntau dua ob zaug raws li nws qhov siab tshaj plaws zaus. tivthaiv.
Nyquist sampling theorem hais li cas?
Nyquist's theorem hais tias ib lub teeb liab yuav tsum tau coj mus kuaj ntau dua ob zaug ntawm qhov ntau zaus ntawm lub teeb liab.
Nyquist Theorem yog dab tsi?
Nyquist sampling (f)=d/2, qhov twg d=qhov khoom me tshaj plaws, lossis qhov siab tshaj plaws, koj xav sau. Lub Nyquist Theorem hais tias txhawm rau tsim kom tsim tau lub teeb liab txaus nws yuav tsum tau coj mus kuaj ib ntus ntawm tus nqi uas yog 2X qhov siab tshaj plaws uas koj xav sau.
Nyquist Theorem siv rau dab tsi?
The Nyquist Theorem, tseem hu ua qhov piv txwv theorem, yog txoj hauv kev uas cov kws ua haujlwm ua raws li digitization ntawm analog signals. Rau kev hloov pauv ntawm analog-rau-digital (ADC) kom ua rau muaj kev ncaj ncees rov ua dua ntawm cov teeb liab, cov hlais, hu ua cov qauv, ntawm cov qauv analog waveform yuav tsum tau noj ntau zaus.
Tus nqi ntsuas tsawg kawg yog dab tsi?
Tus nqi qis qis feem ntau hu ua Nyquist tus nqi. Piv txwv li, qhov tsawg kawg sampling tus nqi rau ib tug xov tooj hais lus teeb liab (xav tias low-pass filtered ntawm 4 kHz) yuav tsum yog 8 KHz (los yog 8000 qauv ib ob), thaum qhov tsawg kawg nkaus sampling tus nqi rau ib lub suab CD teeb liab nrog zaus mus txog 22KHz yuav tsum yog 44KHz.
Pom zoo:
Theorem txhais li cas?
Nyob rau hauv lej thiab logic, lub theorem yog ib nqe lus uas tsis yog nws tus kheej uas tau ua pov thawj tias muaj tseeb, los ntawm lub hauv paus ntawm cov lus lees paub xws li axioms lossis raws li cov lus tau tsim yav dhau los xws li lwm yam.
Ntawm qhov hnyav txhais tau tias tus nqi theorem rau kev sib xyaw?
Tus Mean Value Theorem rau Integrals yog ib qho cuab yeej muaj zog, uas tuaj yeem siv los ua pov thawj Fundamental Theorem of Calculus Fundamental Theorem of Calculus Lub hauv paus theorem ntawm calculus yogtheorem uas txuas lub tswvyim ntawm kev sib txawv.
Vim li cas ho siv binomial theorem?
The binomial theorem (los yog binomial expansion) yog a tshwm sim ntawm kev nthuav dav lub hwj chim ntawm binomials lossis cov lej ntawm ob nqe lus. Lub theorem thiab nws cov generalizations tuaj yeem siv los ua pov thawj cov txiaj ntsig thiab daws cov teeb meem hauv combinatorics, algebra, calculus, thiab ntau lwm yam kev ua lej.
Qhov twg yog qhov zoo tshaj plaws piav qhia lub ntsiab lus ntawm lo lus theorem?
1: ib qho qauv, kev pom zoo, lossis nqe lus hauv lej lossis logic txiav lossis txiav tawm los ntawm lwm cov qauv lossis cov lus pom zoo. 2: ib lub tswv yim lees txais los yog npaj ua qhov tseeb feem ntau ua ib feem ntawm txoj kev xav dav dav:
Nyquist sampling theorem yog dab tsi?
The Nyquist–Shannon sampling theorem yog ib qho kev qhia theorem hauv kev ua haujlwm ntawm cov teeb liab uas ua haujlwm ua tus choj tseem ceeb ntawm cov teeb liab txuas mus ntxiv thiab cov teeb liab tsis sib xws. Nyquist sampling theorem hais li cas?
