To transmit the sampled values via a
digital system, we have to represent
each sample value in numerical form.
This requires quantizing where each
accurate sample value is rounded off
to the closest numerical value in a
given numerical set.
In the quantizing process the
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Quantization and noise.
information in accurate signal values
is lost because of rounding off and
the original signal cannot be
reproduced exactly any more.
The more quantum levels we use,
the better performance we get.
For binary coding, the number of quantum levels is
q = 2n