题目内容
(请给出正确答案)
提问人:网友mcj0127
发布时间:2022-01-07
[单选题]
Whichtwostatementsaretrueaboutanalogtodigitalconversionofvoicesignalsforuseindigitaltelephonynetworks?()
A.Thethreerequiredstepsintheanalogtodigitalconversionaresampling,encoding,andcompression.
B.Thethreerequiredstepsintheanalogtodigitalconversionaresampling,quantization,andcompression.
C.Thethreerequiredstepsintheanalogtodigitalconversionaresampling,quantization,andencoding.
D.Theoutputofthesamplingprocessisapulsecodemodulation(PCM)signal.
E.Theoutputofthesamplingprocessisapulseamplitudemodulation(PAM)signal.
参考答案