<s>
Raven	O
is	O
a	O
brand	O
of	O
smart	B-Device
speakers	I-Device
,	O
developed	O
by	O
Chinese	O
web	O
services	O
company	O
Baidu	B-Application
.	O
</s>
<s>
The	O
devices	O
connect	O
to	O
the	O
voice-controlled	O
intelligent	B-Protocol
personal	I-Protocol
assistant	I-Protocol
service	O
DuerOS	O
.	O
</s>
<s>
The	O
products	O
are	O
a	O
result	O
of	O
Baidu	B-Application
's	O
acquisition	O
of	O
Raven	O
Tech	O
in	O
February	O
2017	O
.	O
</s>
<s>
The	O
Raven	O
H	O
is	O
a	O
smart	B-Device
speaker	I-Device
consisting	O
of	O
eight	O
metal	O
plates	O
.	O
</s>
<s>
It	O
was	O
first	O
introduced	O
in	O
November	O
2017	O
at	O
the	O
annual	O
Baidu	B-Application
World	O
conference	O
in	O
Beijing	O
.	O
</s>
<s>
The	O
Raven	O
R	O
is	O
a	O
planned	O
smart	B-Device
speaker	I-Device
with	O
six	O
moveable	O
joints	O
,	O
used	O
to	O
perform	O
simple	O
function	O
and	O
express	O
emotions	O
on	O
an	O
LED	O
display	O
.	O
</s>
<s>
The	O
Raven	O
Q	O
is	O
a	O
planned	O
home	O
robot	O
that	O
will	O
be	O
able	O
to	O
move	O
around	O
a	O
house	O
,	O
in	O
addition	O
to	O
acting	O
as	O
a	O
virtual	B-Protocol
assistant	I-Protocol
.	O
</s>
