<s>
Truespeech	B-Algorithm
is	O
a	O
proprietary	O
audio	O
codec	B-General_Concept
produced	O
by	O
the	O
DSP	B-General_Concept
Group	O
.	O
</s>
<s>
It	O
is	O
designed	O
for	O
encoding	O
voice	O
data	O
at	O
low	O
bitrates	O
(	O
8.5kbps	O
for	O
8kHz	O
samples	O
)	O
,	O
and	O
to	O
be	O
embedded	O
into	O
DSP	B-General_Concept
chips	O
.	O
</s>
<s>
Truespeech	B-Algorithm
had	O
been	O
integrated	O
into	O
Windows	B-Device
Media	I-Device
Player	I-Device
in	O
older	O
versions	O
of	O
Windows	O
,	O
but	O
no	O
longer	O
supported	O
since	O
Windows	B-Application
Vista	I-Application
.	O
</s>
<s>
It	O
was	O
also	O
the	O
format	O
used	O
by	O
the	O
voice	B-Protocol
chat	I-Protocol
features	O
of	O
Yahoo	B-Application
!	O
</s>
<s>
A	O
Truespeech	B-Algorithm
decoder	O
was	O
implemented	O
in	O
the	O
0.5	O
release	O
of	O
FFmpeg	B-Library
.	O
</s>
