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?
Nyquist's theorem hais tias ib lub sijhawm yuav tsum tau coj mus kuaj ntau dua ob zaug ntawm qhov ntau zaus ntawm cov teeb liab. Nyob rau hauv kev xyaum, vim lub sij hawm finite muaj, tus qauv nqi me ntsis siab dua qhov no yog qhov tsim nyog.
Nyquist tus nqi yog dab tsi hauv sampling theory?
Lub Nyquist Sampling Theorem hais tias: Lub teeb liab tsis tu ncua-lub sijhawm tuaj yeem ua qauv thiab rov tsim kho zoo kawg nkaus los ntawm nws cov qauv yog lub waveform yog kuaj dua ob zaug sai npaum li nws qhov siab tshaj plaws zaus tivthaiv.
Nyquist Theorem yog dab tsi?
Sampling thiab Nyquist Theorem. 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 yog dab tsi?
Lub Nyquist Theorem, tseem hu ua qhov piv txwv theorem, yog lub hauv paus ntsiab lus uas engineers ua raws li digitization ntawm analog signals. Rau analog-to-digital conversion (ADC) ua rau muaj kev ncaj ncees rov ua dua tshiab ntawm cov teeb liab, hlais, hu ua cov qauv, ntawm cov analog.waveform yuav tsum tau nquag.
