<s>
Kaldi	B-General_Concept
is	O
an	O
open-source	B-Application
speech	B-Application
recognition	I-Application
toolkit	O
written	O
in	O
C++	B-Language
for	O
speech	B-Application
recognition	I-Application
and	O
signal	O
processing	O
,	O
freely	B-Application
available	O
under	O
the	O
Apache	B-Application
License	I-Application
v2.0	O
.	O
</s>
<s>
Kaldi	B-General_Concept
aims	O
to	O
provide	O
software	O
that	O
is	O
flexible	O
and	O
extensible	O
,	O
and	O
is	O
intended	O
for	O
use	O
by	O
automatic	B-Application
speech	I-Application
recognition	I-Application
(	O
ASR	O
)	O
researchers	O
for	O
building	O
a	O
recognition	O
system	O
.	O
</s>
<s>
Kaldi	B-General_Concept
is	O
capable	O
of	O
generating	O
features	O
like	O
mfcc	B-Algorithm
,	O
fbank	O
,	O
fMLLR	B-General_Concept
,	O
etc	O
.	O
</s>
<s>
Hence	O
in	O
recent	O
deep	O
neural	O
network	O
research	O
,	O
a	O
popular	O
usage	O
of	O
Kaldi	B-General_Concept
is	O
to	O
pre-process	O
raw	O
waveform	O
into	O
acoustic	O
feature	O
for	O
end-to-end	O
neural	O
models	O
.	O
</s>
<s>
Kaldi	B-General_Concept
has	O
been	O
incorporated	O
as	O
part	O
of	O
the	O
over	O
several	O
successive	O
events	O
.	O
</s>
<s>
Kaldi	B-General_Concept
is	O
named	O
after	O
the	O
legendary	O
Ethiopian	O
goat	O
herder	O
Kaldi	B-General_Concept
who	O
was	O
said	O
to	O
have	O
discovered	O
the	O
coffee	O
plant	O
.	O
</s>
