Yuav ua li cas yog digitized signals xa?
Yuav ua li cas yog digitized signals xa?

Video: Yuav ua li cas yog digitized signals xa?

Video: Yuav ua li cas yog digitized signals xa?
Video: pob txha ntses daig caj pas lawm yuav ua li cas 2024, Kaum ib hlis
Anonim

Ib qho cov teeb liab yog binary code, ib hom lus ntawm zeroes thiab cov uas cov computers siv los sib txuas lus. Ib tug hauv binary tig rau ntawm teeb liab , thaum xoom tig tawm lub teeb liab . Zoo li lub teeb hloov, digital signals muaj ob tus nqi. Digital signals xa ntu, thaum analog teeb liab xa nruam ntws.

Ib yam li ntawd, tib neeg nug, vim li cas cov cim digitized yog ib txoj hauv kev zoo tshaj plaws los xa cov ntaub ntawv tshaj li kev sib kis analog?

digitized teeb liab yog a txoj kev ntseeg ntau dua mus encode thiab xa cov ntaub ntawv tshaj li cov cim analog . yog transmittal ntawm digital signals nruab nrab ntawm ob los yog ntau cov ntsiab lus hauv kev sib txuas lus. Cov teeb liab tuaj yeem ua binary lossis lwm hom kev sib cais-qib digital mem tes.

Qhov thib ob, vim li cas cov teeb liab digital thiaj li ntseeg tau ntau dua? Qhov zoo ntawm Digital Signal Tshaj Analog Cov teeb liab Digital yog ntau ruaj ntseg, thiab lawv tsis raug puas los ntawm lub suab nrov. Lawv tso cai rau teeb liab kis tau tus kab mob mus ntev. Los ntawm kev siv cov no teeb liab , peb tuaj yeem txhais cov lus, suab, video rau hauv hom lus.

Yog li ntawd, hom teeb liab twg yog qhov kev ntseeg siab dua?

Digitized teeb liab (xa raws li nthwv dej pulses) yog a txhim khu kev qha txoj kev encode thiab xa cov ntaub ntawv.

Cov yam ntxwv tshwj xeeb dab tsi ua rau kev sib kis ntawm cov teeb liab muaj kev ntseeg siab dua li kev sib kis ntawm cov teeb liab?

Cov teeb liab yog a txhim khu kev qha daim ntawv ntawm kis tau cov ntaub ntawv vim tias qhov yuam kev hauv qhov amplitude lossis zaus tus nqi yuav tsum loj heev thiaj li ua rau dhia mus rau qhov sib txawv. Teeb liab yog tsim los ntawm infinite muaj nuj nqis. Teeb liab tsuas yog muaj ob qhov txiaj ntsig tau: 0 lossis 1.

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