Digital Signal Processing Reference
In-Depth Information
Quantizer
r(n)
x(n)
r(n)
+
Quantizer
+
−
+
x
p
(n)
Predict
x(n)
De-quantizer
^
r(n)
^
x(n)
De-quantizer
+
x
p
(n)
Predict
x(n)
Figure 3.7
Block diagram of a backward adaptive differential quantizer
Quantizer
^
r(n)
x(n)
r(n)
Buffer
+
Quantizer
+
−
+
x
p
(n)
Estimate
Predictor
Parameters
Linear
Predictor
a
k
Quantize
a
k
Predictor
Parameters
De-quantizer
^
r(n)
^
x(n)
De-quantizer
+
x
p
(n)
Linear
Predictor
^
a
k
De-quantize
Predictor
Parameters
Figure 3.8
Block diagram of a forward adaptive differential quantizer
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