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Electronics and Communication Engineering - Communication Systems - Discussion

Discussion Forum : Communication Systems - Section 2 (Q.No. 24)
Communication Systems
24.
In the output of a DM speech encoder, the consecutive pulses are of opposite polarity during time interval t1 < t < t2. This indicates that during this interval
the input to the modulator is essentially constant
the modulator is going through slope overload
the accumulator is in saturation
the speech signal is being sampled at the Nyquist rate
Answer: Option
Explanation:

In delta modulator, when consecutive pulses of polarity are opposite then signal is constant.

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