
Quantization
2
Resolution
properly refers to
spatial phenomena; see page 65.
It is a mistake to refer to a sample
as having 8-bit resolution: Say
quantizatJon
or
precision
instead.
To make a 100-foot-long fence with
fence posts every 10 feet, you need
11 posts, not ten[ Take care to
distinguish
levels
(in the left-hand
portion of Figure 2.1, eleven) from
steps
or
risers
(here, ten).
A signal whose amplitude takes a range of continuous
values is
quantized
by assigning to each of several (or
several hundred or several thousand) intervals of ampli-
tude a discrete, numbered level. In
uniform quantiza-
tion,
the
steps
between ...