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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?A．9.1 KbpsB．9.3 KbpsC．30.9 KbpsD．30.17 Kbps

题目

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?

A．9.1 Kbps

B．9.3 Kbps

C．30.9 Kbps

D．30.17 Kbps

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