Quantization Noise Power Spectral Density Txij li thaum Fourier hloov pauv ntawm delta muaj nuj nqi yog sib npaug rau ib qho, lub zog spectral ntom ntom yuav ua rau muaj kev ywj pheej. Yog li ntawd, lub suab nrov quantization yog suab nrov nrog tag nrho lub zog sib npaug LSB 2/12.
Quantization nrov yog dab tsi?
Quantization nrov yog cov txiaj ntsig ntawm kev sawv cev ntawm cov teeb liab txuas ntxiv nrog tus lej sib cais (cov teeb liab digital). Qhov yuam kev rounding yog hu ua quantization nrov. Lub suab nrov quantization yog ze li ntawm random (tsawg kawg rau cov digitizers siab) thiab raug kho raws li lub suab nrov.
Quantization suab nrov yog dab tsi?
Lub suab nrov nrov yog thaj chaw tau los ntawm kev sib koom ua ke lub zog spectral ntom ntom ua haujlwm nyob rau hauv thaj tsam ntawm − f s / 2 txog f s / 2. Tam sim no cia peb tshawb xyuas qhov oversampling ADC, qhov twg tus nqi piv txwv loj dua li ntawm ADC li niaj zaus; uas yog f s > > 2 f max.
Quantization ua suab nrov li cas?
Quantization nrov yog feem ntau tshwm sim los ntawm qhov sib txawv me me (tsuas yog qhov yuam kev sib npaug) ntawm qhov tseeb analog input voltage ntawm lub suab raug coj mus kuaj thiab qhov kev daws teeb meem me ntsis ntawm analog-rau-digital converter siv. Lub suab nrov no yog nonlinear thiab teeb liab nyob ntawm.
Quantization thiab quantization suab yog dab tsi?
Quantization Noise
Nws yog ib hom kev ua yuam kev quantization, uas feem ntau tshwm sim hauv analog suab teeb liab, thaumquantizing nws rau digital. Piv txwv li, nyob rau hauv cov suab paj nruag, cov teeb liab yuav hloov tsis tu ncua, qhov twg ib tug tsis tu ncua tsis pom nyob rau hauv yuam kev. Qhov yuam kev no tsim lub suab nrov nrov hu ua Quantization Noise.
