<s>
Warped	B-Algorithm
linear	I-Algorithm
predictive	I-Algorithm
coding	I-Algorithm
(	O
warped	B-Algorithm
LPC	I-Algorithm
or	O
WLPC	O
)	O
is	O
a	O
variant	O
of	O
linear	B-Algorithm
predictive	I-Algorithm
coding	I-Algorithm
in	O
which	O
the	O
spectral	O
representation	O
of	O
the	O
system	O
is	O
modified	O
,	O
for	O
example	O
by	O
replacing	O
the	O
unit	O
delays	O
used	O
in	O
an	O
LPC	O
implementation	O
with	O
first-order	O
all-pass	O
filters	O
.	O
</s>
<s>
Warped	B-Algorithm
LPC	I-Algorithm
was	O
first	O
proposed	O
in	O
1980	O
by	O
Hans	O
Werner	O
Strube	O
.	O
</s>
