Pulse-code modulation (PCM) is a digital representation of an an
2023-11-19通信专业业务
Pulse-code modulation (PCM) is a digital representation of an analog signal where the magnitude of the signal is sampled regularly at uniform intervals， then showed by a series of symbols in a numeric (usually binary) code．This process is called（ ）.
A.A、 digitization
B.B、 quantization
C.C、screening
D.D、demodulation
正确答案是B
