<s>
Satin	B-Algorithm
is	O
a	O
lossy	O
speech	B-Application
codec	I-Application
developed	O
by	O
Microsoft	O
.	O
</s>
<s>
Satin	B-Algorithm
was	O
designed	O
to	O
supersede	O
the	O
earlier	O
Silk	O
codec	O
in	O
their	O
applications	O
,	O
and	O
implements	O
a	O
neural	B-Architecture
network	I-Architecture
and	O
novel	O
signal	O
processing	O
to	O
improve	O
performance	O
over	O
its	O
predecessor	O
.	O
</s>
<s>
Satin	B-Algorithm
is	O
designed	O
to	O
deliver	O
good	O
sound	O
quality	O
despite	O
limited	O
bandwidth	O
or	O
high	O
packet	B-Protocol
loss	I-Protocol
,	O
such	O
as	O
over	O
unreliable	O
WiFi	O
or	O
cellular	O
networks	O
.	O
</s>
<s>
Satin	B-Algorithm
can	O
produce	O
output	O
bitrates	O
of	O
6	O
to	O
36	O
kbps	O
,	O
and	O
operates	O
on	O
super-wideband	B-Algorithm
audio	I-Algorithm
(	O
a	O
32	O
kHz	O
sampling	O
rate	O
)	O
.	O
</s>
<s>
Sound	O
is	O
encoded	O
by	O
processing	O
a	O
sparse	O
representation	O
of	O
the	O
input	O
,	O
then	O
decoded	O
with	O
the	O
help	O
of	O
a	O
neural	B-Architecture
network	I-Architecture
that	O
infers	O
the	O
high	O
frequencies	O
from	O
the	O
low	O
ones	O
.	O
</s>
<s>
Because	O
neural	B-Architecture
networks	I-Architecture
are	O
computationally	O
complex	O
,	O
optimization	O
and	O
vectorization	O
of	O
the	O
network	O
were	O
required	O
to	O
achieve	O
acceptable	O
performance	O
.	O
</s>
<s>
To	O
improve	O
resilience	O
to	O
packet	B-Protocol
loss	I-Protocol
,	O
each	O
packet	O
is	O
encoded	O
independently	O
and	O
the	O
codec	O
has	O
its	O
own	O
packet	B-Protocol
loss	I-Protocol
concealment	I-Protocol
system	O
.	O
</s>
<s>
Satin	B-Algorithm
is	O
considered	O
to	O
be	O
Silk	O
's	O
successor	O
,	O
and	O
was	O
initially	O
announced	O
and	O
implemented	O
for	O
Microsoft	B-Application
Teams	I-Application
in	O
2020	O
.	O
</s>
<s>
Microsoft	O
claims	O
that	O
Satin	B-Algorithm
's	O
quality	O
is	O
significantly	O
better	O
than	O
Silk	O
,	O
achieving	O
mean	O
opinion	O
scores	O
up	O
to	O
1.7	O
points	O
higher	O
in	O
low-bitrate	O
A/B	O
testing	O
.	O
</s>
<s>
Microsoft	O
also	O
notes	O
that	O
Satin	B-Algorithm
's	O
bitrate	O
savings	O
allows	O
for	O
sending	O
more	O
redundant	O
data	O
to	O
increase	O
resistance	O
to	O
packet	B-Protocol
loss	I-Protocol
.	O
</s>
<s>
As	O
of	O
February	O
2021	O
,	O
Skype	O
and	O
Microsoft	B-Application
Teams	I-Application
implemented	O
Satin	B-Algorithm
for	O
all	O
two-person	O
calls	O
,	O
and	O
an	O
expansion	O
to	O
larger	O
Teams	O
meetings	O
was	O
planned	O
.	O
</s>
