GATE Electronics and Communications (EC) 2017 Shift 1 Solved Paper

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Question : 32 of 65

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Which one of the following statements about differential pulse code modulation (DPCM) is true?

The sum of message signal sample with its prediction is quantized
The message signal sample is directly quantized and its prediction is not used
The difference of message signal sample and a random signal is quantized
The difference of message signal sample with its prediction is quantized

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