<s>
A	O
speaker	B-Device
pillow	I-Device
is	O
a	O
pillow	O
that	O
incorporates	O
loudspeakers	O
.	O
</s>
<s>
It	O
is	O
generally	O
designed	O
as	O
an	O
alternative	O
to	O
headphones	B-Device
connected	O
to	O
portable	O
media	O
players	O
.	O
</s>
<s>
Research	O
has	O
shown	O
that	O
a	O
speaker	B-Device
pillow	I-Device
may	O
also	O
help	O
with	O
the	O
symptoms	O
of	O
tinnitus	O
by	O
acting	O
as	O
a	O
tinnitus	B-Application
masker	I-Application
,	O
obscuring	O
the	O
internal	O
sound	O
with	O
an	O
external	O
one	O
.	O
</s>
<s>
Studies	O
have	O
also	O
found	O
that	O
speaker	B-Device
pillows	I-Device
may	O
help	O
some	O
individuals	O
with	O
sleeping	O
problems	O
.	O
</s>
<s>
The	O
speaker	B-Device
pillow	I-Device
is	O
generally	O
used	O
to	O
play	O
audio	O
,	O
such	O
as	O
relaxing	O
music	O
,	O
radio	O
shows	O
or	O
audiobooks	O
,	O
for	O
an	O
individual	O
while	O
falling	O
asleep	O
.	O
</s>
<s>
Speaker	B-Device
pillows	I-Device
come	O
in	O
two	O
formats	O
.	O
</s>
<s>
One	O
type	O
contains	O
a	O
pouch	O
for	O
a	O
smartphone	B-Application
from	O
which	O
audio	O
is	O
played	O
.	O
</s>
<s>
The	O
other	O
type	O
has	O
a	O
small	O
,	O
flat	O
speaker	O
in	O
the	O
center	O
of	O
the	O
pillow	O
,	O
which	O
can	O
be	O
plugged	O
into	O
an	O
audio	O
device	O
using	O
a	O
headphone	B-Device
jack	I-Device
.	O
</s>
<s>
However	O
,	O
this	O
type	O
of	O
speaker	B-Device
pillow	I-Device
is	O
known	O
to	O
break	O
very	O
easily	O
.	O
</s>
