<s>
Lyra	B-Application
is	O
a	O
lossy	O
audio	B-Algorithm
codec	I-Algorithm
developed	O
by	O
Google	B-Application
that	O
is	O
designed	O
for	O
compressing	O
speech	O
at	O
very	O
low	O
bitrates	O
.	O
</s>
<s>
The	O
Lyra	B-Application
codec	O
is	O
designed	O
to	O
transmit	O
speech	O
in	O
real-time	O
when	O
bandwidth	O
is	O
severely	O
restricted	O
,	O
such	O
as	O
over	O
slow	O
or	O
unreliable	O
network	O
connections	O
.	O
</s>
<s>
Lyra	B-Application
operates	O
on	O
frames	O
of	O
40	O
ms	O
and	O
Google	B-Application
claims	O
it	O
can	O
run	O
with	O
90	O
ms	O
of	O
latency	O
on	O
typical	O
hardware	O
.	O
</s>
<s>
Google	B-Application
's	I-Application
reference	O
implementation	O
is	O
available	O
for	O
Android	B-Application
and	O
Linux	B-Application
.	O
</s>
<s>
Lyra	B-Application
performs	O
significantly	O
better	O
than	O
traditional	O
codecs	O
at	O
similar	O
bitrates	O
.	O
</s>
<s>
Google	B-Application
claims	O
that	O
is	O
reproduces	O
natural-sounding	O
speech	O
,	O
and	O
that	O
Lyra	B-Application
at	O
3	O
kbps	O
beats	O
Opus	O
at	O
8kps	O
.	O
</s>
<s>
Tsahi	O
Levent-Levi	O
writes	O
that	O
Satin	B-Algorithm
,	O
Microsoft	O
's	O
AI-based	O
codec	O
,	O
outperforms	O
it	O
at	O
higher	O
bitrates	O
.	O
</s>
<s>
Lyra	B-Application
was	O
first	O
announced	O
in	O
February	O
2021	O
,	O
and	O
in	O
April	O
,	O
Google	B-Application
released	O
the	O
source	O
code	O
of	O
their	O
reference	O
implementation	O
.	O
</s>
<s>
Google	B-Application
's	I-Application
implementation	O
is	O
available	O
on	O
Github	B-Application
under	O
the	O
Apache	O
License	O
.	O
</s>
<s>
Written	O
in	O
C++	B-Language
,	O
it	O
is	O
optimized	O
for	O
64-bit	O
ARM	B-Architecture
but	O
also	O
runs	O
on	O
x86	B-Operating_System
,	O
on	O
either	O
Android	B-Application
or	O
Linux	B-Application
.	O
</s>
<s>
Google	B-Application
Duo	I-Application
uses	O
Lyra	B-Application
to	O
transmit	O
sound	O
for	O
video	B-Application
chats	I-Application
when	O
bandwidth	O
is	O
limited	O
.	O
</s>
