<s>
Speaker	B-Device
stands	I-Device
are	O
stands	O
on	O
which	O
loudspeakers	O
are	O
placed	O
with	O
the	O
aim	O
of	O
improving	O
the	O
quality	O
of	O
sound	O
from	O
the	O
speaker	O
.	O
</s>
<s>
Speaker	B-Device
stands	I-Device
,	O
therefore	O
were	O
purpose-built	O
to	O
remove	O
any	O
deleterious	O
colourations	O
that	O
came	O
about	O
through	O
unwanted	O
vibration	O
.	O
</s>
<s>
Further	O
research	O
has	O
shown	O
that	O
speakers	O
are	O
best	O
positioned	O
so	O
that	O
the	O
tweeter	O
is	O
level	O
with	O
the	O
ear	O
of	O
the	O
listener	O
and	O
so	O
speaker	B-Device
stands	I-Device
are	O
often	O
built	O
so	O
that	O
they	O
line	O
up	O
the	O
speakers	O
with	O
the	O
ear	O
of	O
a	O
person	O
when	O
sitting	O
down	O
.	O
</s>
