<s>
LDAC	B-Algorithm
is	O
a	O
proprietary	B-Application
audio	B-Algorithm
coding	I-Algorithm
technology	O
developed	O
by	O
Sony	O
,	O
which	O
allows	O
streaming	O
high-resolution	O
audio	O
over	O
Bluetooth	B-Protocol
connections	O
at	O
up	O
to	O
990	O
kbps	O
at	O
24bit/96kHz	O
.	O
</s>
<s>
It	O
is	O
used	O
by	O
various	O
products	O
,	O
including	O
headphones	B-Device
,	O
earphones	O
,	O
smartphones	B-Application
,	O
portable	O
media	O
players	O
,	O
active	B-Device
speakers	I-Device
,	O
and	O
home	O
theaters	O
.	O
</s>
<s>
The	O
encoder	O
of	O
LDAC	B-Algorithm
is	O
open-source	O
under	O
Apache	B-Application
License	I-Application
2.0	I-Application
,	O
so	O
that	O
any	O
device	O
can	O
be	O
coded	O
to	O
transmit	O
LDAC	B-Algorithm
streams	O
without	O
patent	O
or	O
licensing	O
issues	O
.	O
</s>
<s>
The	O
decoder	O
design	O
remains	O
proprietary	B-Application
.	O
</s>
<s>
LDAC	B-Algorithm
is	O
an	O
alternative	O
to	O
Bluetooth	B-Protocol
SIG	O
's	O
SBC	B-General_Concept
codec	O
.	O
</s>
<s>
Its	O
main	O
competitors	O
are	O
Qualcomm	O
's	O
aptX-HD/aptX	O
Adaptive	O
and	O
the	O
HWA	O
Union/Savitech	O
'	O
s	O
LHDC	B-Algorithm
.	O
</s>
<s>
LDAC	B-Algorithm
utilizes	O
a	O
type	O
of	O
lossy	B-Algorithm
compression	I-Algorithm
by	O
employing	O
a	O
hybrid	O
coding	O
scheme	O
based	O
on	O
the	O
modified	O
discrete	O
cosine	O
transform	O
and	O
Huffman	O
coding	O
to	O
provide	O
more	O
efficient	O
data	O
compression	O
.	O
</s>
<s>
By	O
default	O
,	O
LDAC	B-Algorithm
audio	O
bitrate	O
settings	O
are	O
set	O
to	O
Best	O
Effort	O
,	O
which	O
switches	O
between	O
330/660/990	O
kbps	O
depending	O
on	O
connection	O
strength	O
;	O
however	O
,	O
audio	O
bitrate	O
and	O
resolution	O
can	O
be	O
manually	O
adjusted	O
on	O
Linux	O
(	O
when	O
using	O
PipeWire	O
)	O
,	O
some	O
Android	O
platforms	O
(	O
which	O
generally	O
requires	O
access	O
to	O
the	O
"	O
Developer	O
Settings	O
"	O
menu	O
)	O
,	O
and	O
Sony	O
's	O
own	O
smartphones	B-Application
and	O
Walkman	O
devices	O
at	O
the	O
following	O
rates	O
;	O
330/660/990	O
kbps	O
at	O
96/48	O
kHz	O
and	O
303/606/909	O
kbps	O
at	O
88.2/44.1	O
kHz	O
with	O
depth	O
of	O
24	O
or	O
16	O
bits	O
.	O
</s>
<s>
Starting	O
from	O
Android	B-Application
8.0	I-Application
"	O
Oreo	B-Application
"	O
,	O
LDAC	B-Algorithm
is	O
part	O
of	O
the	O
Android	O
Open	O
Source	O
Project	O
,	O
enabling	O
every	O
OEM	O
to	O
integrate	O
this	O
standard	O
into	O
their	O
own	O
Android	O
devices	O
freely	O
.	O
</s>
<s>
However	O
the	O
decoder	O
library	O
is	O
proprietary	B-Application
,	O
so	O
receiving	O
devices	O
require	O
licenses	O
.	O
</s>
<s>
On	O
17	O
September	O
2019	O
,	O
the	O
Japan	O
Audio	O
Society	O
(	O
JAS	O
)	O
certified	O
LDAC	B-Algorithm
with	O
their	O
Hi-Res	O
Audio	O
Wireless	O
certification	O
.	O
</s>
<s>
Currently	O
the	O
only	O
codecs	O
with	O
the	O
Hi-Res	O
Audio	O
Wireless	O
certification	O
are	O
LDAC	B-Algorithm
and	O
LHDC	B-Algorithm
.	O
</s>
