多选题When a router converts analog signals to digital signals， what three steps are always included in the process？（）AinvolutionBencodingCsamplingDquantizationEcompressionFcompanding
多选题
When a router converts analog signals to digital signals， what three steps are always included in the process？（）
A
involution
B
encoding
C
sampling
D
quantization
E
compression
F
companding
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