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Delta modulation uses _____ bits per sample.

(a) One

(b) Two

(c) Four

(d) Eight

This question was addressed to me at a job interview.

My enquiry is from Pulse Code Modulation in chapter Formatting and Baseband Modulation of Digital Communications

1 Answer

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Best answer
Correct choice is (a) One

For explanation: Delta modulation is used for analog to digital conversion and vice versa. It is a simple form of DPCM. Its uses 1 bit per sample. It also depends on the difference between the current and previous sample values.

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