Pulse-codemodulation(PCM)isadigitalrepresentationofananalogsignalwherethemagnitudeofthesignalissampledregularlyatuniformintervals，thenshowedbyaseriesofsymbolsinanumeric(usuallybinary)code．Thisprocessiscalled（）.
发布于 2022-02-27 11:38:23
【单选题】
A digitization
B quantization
C screening
D demodulation
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