<s>
Sound	B-Application
Recorder	I-Application
(	O
known	O
as	O
Voice	B-Application
Recorder	I-Application
in	O
Windows	B-Operating_System
10	I-Operating_System
)	O
is	O
an	O
audio	O
recording	O
program	O
included	O
in	O
most	O
versions	O
of	O
the	O
Microsoft	B-Application
Windows	I-Application
family	O
of	O
operating	O
systems	O
.	O
</s>
<s>
Sound	B-Application
Recorder	I-Application
has	O
been	O
in	O
most	O
versions	O
and	O
editions	O
of	O
Windows	O
since	O
Windows	B-Application
3.0	I-Application
,	O
including	O
Windows	O
9x	O
,	O
Windows	B-Device
Server	I-Device
and	O
the	O
client	O
versions	O
of	O
Windows	B-Device
NT	I-Device
.	O
</s>
<s>
Even	O
Windows	B-Operating_System
Mobile	I-Operating_System
came	O
with	O
one	O
.	O
</s>
<s>
Its	O
user	O
interface	O
and	O
feature	O
set	O
saw	O
very	O
little	O
change	O
until	O
Windows	B-Application
Vista	I-Application
,	O
when	O
features	O
that	O
lacked	O
practicality	O
were	O
discontinued	O
and	O
Sound	B-Application
Recorder	I-Application
was	O
simplified	O
.	O
</s>
<s>
This	O
version	O
of	O
Sound	B-Application
Recorder	I-Application
was	O
included	O
in	O
Windows	B-Device
7	I-Device
,	O
Windows	B-Application
8	I-Application
and	O
Windows	B-Device
8.1	I-Device
,	O
but	O
did	O
not	O
make	O
it	O
to	O
Windows	B-Operating_System
10	I-Operating_System
.	O
</s>
<s>
A	O
second	O
,	O
different	O
Sound	B-Application
Recorder	I-Application
was	O
introduced	O
in	O
Windows	B-Device
8.1	I-Device
,	O
thus	O
Windows	B-Device
8.1	I-Device
has	O
two	O
distinct	O
apps	O
called	O
Sound	B-Application
Recorder	I-Application
.	O
</s>
<s>
This	O
second	O
app	O
was	O
a	O
Windows	B-Application
Store	I-Application
app	O
and	O
adhered	O
to	O
the	O
design	O
tenets	O
of	O
the	O
Metro	O
design	O
language	O
.	O
</s>
<s>
Leaked	O
images	O
of	O
a	O
preview	O
version	O
Windows	B-Operating_System
10	I-Operating_System
Mobile	I-Operating_System
showed	O
this	O
app	O
too	O
.	O
</s>
<s>
When	O
Windows	B-Operating_System
10	I-Operating_System
released	O
,	O
however	O
,	O
it	O
was	O
renamed	O
Voice	B-Application
Recorder	I-Application
.	O
</s>
<s>
The	O
original	O
Sound	B-Application
Recorder	I-Application
was	O
removed	O
from	O
Windows	B-Operating_System
10	I-Operating_System
.	O
</s>
<s>
With	O
the	O
release	O
of	O
Windows	B-Application
11	I-Application
,	O
Voice	B-Application
Recorder	I-Application
was	O
renamed	O
back	O
to	O
Sound	B-Application
Recorder	I-Application
and	O
included	O
new	O
features	O
,	O
such	O
as	O
changing	O
the	O
playback	O
speed	O
and	O
the	O
input	O
source	O
within	O
the	O
app	O
.	O
</s>
<s>
Sound	B-Application
Recorder	I-Application
can	O
record	O
audio	O
from	O
a	O
microphone	B-Application
or	O
headset	B-Device
.	O
</s>
<s>
In	O
addition	O
,	O
many	O
modern	O
sound	O
cards	O
allow	O
their	O
output	O
channels	O
to	O
be	O
recorded	O
through	O
a	O
loopback	B-Protocol
channel	O
,	O
typically	O
called	O
"	O
Wave-Out	O
Mix	O
"	O
or	O
"	O
Stereo	O
Mix	O
"	O
.	O
</s>
<s>
Before	O
Windows	B-Application
Vista	I-Application
,	O
Sound	B-Application
Recorder	I-Application
was	O
capable	O
of	O
:	O
</s>
<s>
These	O
features	O
,	O
however	O
,	O
were	O
either	O
removed	O
in	O
Windows	B-Application
Vista	I-Application
or	O
taken	O
over	O
by	O
other	O
applications	O
.	O
</s>
<s>
The	O
playback	O
and	O
trimming	O
features	O
reappeared	O
in	O
Voice	B-Application
Recorder	I-Application
,	O
although	O
Voice	B-Application
Recorder	I-Application
can	O
only	O
play	O
its	O
own	O
recordings	O
.	O
</s>
<s>
Sound	B-Application
Recorder	I-Application
accepts	O
command-line	O
parameters	O
.	O
</s>
<s>
This	O
was	O
removed	O
in	O
Windows	B-Application
8	I-Application
,	O
as	O
Windows	B-Application
Store	I-Application
apps	O
cannot	O
be	O
run	O
with	O
a	O
parameter	O
from	O
the	O
command-line	O
.	O
</s>
<s>
Before	O
Windows	B-Device
7	I-Device
,	O
Sound	B-Application
Recorder	I-Application
could	O
save	O
the	O
recorded	O
audio	O
in	O
waveform	O
audio	O
(	O
.wav	O
)	O
container	O
files	O
.	O
</s>
<s>
Sound	B-Application
Recorder	I-Application
could	O
also	O
open	O
and	O
play	O
existing	O
.wav	O
files	O
.	O
</s>
<s>
To	O
successfully	O
open	O
compressed	O
.wav	O
files	O
in	O
Sound	B-Application
Recorder	I-Application
,	O
the	O
audio	O
codec	O
used	O
by	O
the	O
file	O
must	O
be	O
installed	O
in	O
the	O
Audio	O
Compression	O
Manager	O
(	O
ACM	O
)	O
;	O
Windows	O
installations	O
dating	O
back	O
to	O
at	O
least	O
Windows	O
95	O
came	O
with	O
a	O
selection	O
of	O
standard	O
codecs	O
that	O
included	O
Truespeech	B-Algorithm
,	O
GSM	O
6.10	O
,	O
G.723.1	B-Algorithm
,	O
IMA	O
ADPCM	O
and	O
CCITT	O
A-law	B-Algorithm
and	O
u-law	B-Algorithm
,	O
with	O
additional	O
codecs	O
being	O
added	O
in	O
later	O
editions	O
.	O
</s>
<s>
Starting	O
with	O
Windows	B-Application
Vista	I-Application
,	O
Sound	B-Application
Recorder	I-Application
saves	O
recorded	O
audio	O
in	O
Windows	B-Application
Media	I-Application
Audio	I-Application
(	O
.wma	O
)	O
files	O
instead	O
;	O
the	O
exceptions	O
to	O
this	O
are	O
the	O
Home	O
Basic	O
N	O
and	O
Business	O
N	O
editions	O
,	O
which	O
continue	O
to	O
use	O
.wav	O
.	O
</s>
<s>
Voice	B-Application
Recorder	I-Application
in	O
Windows	B-Operating_System
10	I-Operating_System
only	O
records	O
audio	O
in	O
MPEG-4	O
Part	O
14	O
(	O
.m4a	O
)	O
container	O
formats	O
.	O
</s>
<s>
Versions	O
of	O
Sound	B-Application
Recorder	I-Application
before	O
Windows	B-Application
Vista	I-Application
recorded	O
audio	O
to	O
memory	O
,	O
rather	O
than	O
to	O
the	O
hard	O
disk	O
,	O
and	O
the	O
length	O
of	O
recording	O
was	O
by	O
default	O
limited	O
to	O
60	O
seconds	O
.	O
</s>
<s>
In	O
addition	O
,	O
it	O
is	O
possible	O
to	O
use	O
the	O
Sound	B-Application
Recorder	I-Application
's	O
concatenation	O
feature	O
to	O
increase	O
the	O
length	O
of	O
the	O
audio	O
file	O
.	O
</s>
<s>
By	O
recording	O
over	O
any	O
of	O
these	O
longer	O
sound	O
files	O
,	O
Sound	B-Application
Recorder	I-Application
can	O
have	O
an	O
uninterrupted	O
arbitrary	O
recording	O
time	O
(	O
limited	O
only	O
by	O
primary	O
memory	O
)	O
.	O
</s>
<s>
In	O
32-bit	O
versions	O
of	O
Windows	O
before	O
Windows	B-Application
Vista	I-Application
,	O
on	O
computers	O
with	O
more	O
than	O
2	O
GB	O
of	O
RAM	B-Architecture
,	O
after	O
recording	O
(	O
but	O
not	O
when	O
playing	O
)	O
,	O
Sound	B-Application
Recorder	I-Application
will	O
return	O
an	O
error	O
message	O
indicating	O
that	O
there	O
is	O
not	O
enough	O
memory	O
.	O
</s>
<s>
This	O
is	O
a	O
design	O
flaw	O
of	O
older	O
versions	O
of	O
Sound	B-Application
Recorder	I-Application
and	O
officially	O
cannot	O
be	O
resolved	O
except	O
by	O
reducing	O
the	O
amount	O
of	O
available	O
physical	O
memory	O
.	O
</s>
<s>
The	O
Sound	B-Application
Recorder	I-Application
in	O
Windows	B-Application
Vista	I-Application
and	O
later	O
uses	O
the	O
hard	O
disk	O
for	O
recording	O
audio	O
and	O
can	O
therefore	O
record	O
audio	O
up	O
to	O
any	O
length	O
as	O
long	O
as	O
there	O
is	O
free	O
space	O
on	O
the	O
hard	O
disk	O
drive	O
.	O
</s>
