<s>
HTK	B-General_Concept
(	O
Hidden	B-General_Concept
Markov	I-General_Concept
Model	I-General_Concept
Toolkit	I-General_Concept
)	O
is	O
a	O
proprietary	O
software	O
toolkit	O
for	O
handling	O
HMMs	O
.	O
</s>
<s>
It	O
is	O
mainly	O
intended	O
for	O
speech	B-Application
recognition	I-Application
,	O
but	O
has	O
been	O
used	O
in	O
many	O
other	O
pattern	O
recognition	O
applications	O
that	O
employ	O
HMMs	O
,	O
including	O
speech	B-Application
synthesis	I-Application
,	O
character	B-Application
recognition	I-Application
and	O
DNA	O
sequencing	O
.	O
</s>
<s>
Originally	O
developed	O
at	O
the	O
Machine	O
Intelligence	O
Laboratory	O
(	O
formerly	O
known	O
as	O
the	O
Speech	O
Vision	O
and	O
Robotics	O
Group	O
)	O
of	O
the	O
Cambridge	O
University	O
Engineering	O
Department	O
(	O
CUED	O
)	O
,	O
HTK	B-General_Concept
is	O
now	O
being	O
widely	O
used	O
among	O
researchers	O
who	O
are	O
working	O
on	O
HMMs	O
.	O
</s>
