In delta modulation, the slope overload distortion can be reduced by

a) decreasing the step size

b) decreasing the granular noise

c) decreasing the sampling rate

d) increasing the step size.

Hi Ankita,

This was already answered previously

http://www.gateprep.com/posts/list/electrical-engineering-in-delta-modulation-the-slope-overload-920066.htm

Better do a rough search before posting.

Thanks Deepthi..