<s>
Distributed	B-Device
Mode	I-Device
Loudspeaker	I-Device
(	O
DML	O
)	O
is	O
a	O
flat	O
panel	O
loudspeaker	O
technology	O
,	O
developed	O
by	O
NXT	O
,	O
in	O
which	O
sound	O
is	O
produced	O
by	O
inducing	O
uniformly	O
distributed	O
vibration	O
modes	O
in	O
the	O
panel	O
through	O
a	O
special	O
electro-acoustic	O
exciter	O
.	O
</s>
<s>
Distributed	B-Device
mode	I-Device
loudspeakers	I-Device
function	O
differently	O
from	O
most	O
others	O
,	O
which	O
typically	O
produce	O
sound	O
by	O
inducing	O
pistonic	O
motion	O
in	O
the	O
diaphragm	B-Device
.	O
</s>
<s>
Exciters	O
for	O
distributed	B-Device
mode	I-Device
loudspeakers	I-Device
include	O
,	O
but	O
are	O
not	O
limited	O
to	O
,	O
moving	O
coil	O
and	O
piezoelectric	O
devices	O
,	O
and	O
are	O
placed	O
to	O
correspond	O
to	O
the	O
natural	O
resonant	O
model	O
of	O
the	O
panel	O
.	O
</s>
<s>
NXT	O
licenses	O
two	O
classes	O
of	O
distributed	B-Device
mode	I-Device
loudspeaker	I-Device
:	O
SurfaceSound	O
for	O
traditional	O
flat-panel	O
applications	O
,	O
and	O
SoundVu	O
for	O
applications	O
in	O
which	O
sound	O
is	O
produced	O
directly	O
in	O
front	O
of	O
the	O
display	O
(	O
either	O
through	O
a	O
projection	O
screen	O
which	O
functions	O
as	O
a	O
DML	O
or	O
a	O
transparent	O
DML	O
overlaid	O
on	O
the	O
display	O
)	O
.	O
</s>
<s>
According	O
to	O
NXT	O
,	O
the	O
resultant	O
speakers	O
feature	O
the	O
low-frequency	O
performance	O
of	O
a	O
traditional	O
loudspeaker	O
,	O
but	O
with	O
a	O
wider	O
directivity	O
and	O
shallower	O
profile	O
,	O
as	O
well	O
as	O
the	O
mid-range	B-Device
and	O
high-frequency	B-Device
performance	O
of	O
a	O
DML	O
.	O
</s>
<s>
The	O
two	O
types	O
of	O
BMR	O
offered	O
are	O
:	O
the	O
Audio	O
Full	O
Range	O
(	O
AFR	O
)	O
,	O
a	O
full-range	B-Device
optimized	O
circular	O
speaker	O
;	O
and	O
the	O
High	O
Aspect	O
Ratio	O
Panel	O
(	O
HARP	O
)	O
,	O
a	O
long	O
and	O
thin	O
form	O
factor	O
for	O
use	O
in	O
narrower	O
spaces	O
.	O
</s>
