According to Shannon’s equation, what is the channel capacity of an analog voice-grade phone line with a bandwidth of 3100 Hz a

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问题 According to Shannon’s equation,  what is the channel capacity of an analog voice-grade phone line with a bandwidth of 3100 Hz and a signal-to-noise ratio or 30 dB?

选项 A、9.1 Kbps
B、9.3 Kbps
C、30.9 Kbps
D、30.17 Kbps

答案D

解析
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