Which of the following is the original technique used to dig

Which of the following is the original technique used to digitize voice with 8 bits of sampling 8,000 times per second, which yields 64Kbps for one voice channel?

A. DAT

B. CDMA

C. PCM

D. GSM

Solution

C. Pulse code modulation (PCM) is the original technique used to digitize voice with 8 bits of sampling 8,000 times per second, which yields 64Kbps for one voice channel. Answer A is incorrect because DAT is digital audio tape and is an analog voice-transmission method. Answers B and D are incorrect because CDMA and GSM are methods for cellular phone transmission.