<s>
Harmonic	B-Algorithm
and	I-Algorithm
Individual	I-Algorithm
Lines	I-Algorithm
and	I-Algorithm
Noise	I-Algorithm
(	O
HILN	B-Algorithm
)	O
is	O
a	O
parametric	O
codec	B-General_Concept
for	O
audio	O
.	O
</s>
<s>
A	O
typical	O
codec	B-General_Concept
extracts	O
sinusoid	O
information	O
from	O
the	O
samples	O
by	O
applying	O
a	O
short-time	B-Algorithm
Fourier	I-Algorithm
transform	I-Algorithm
to	O
the	O
samples	O
and	O
using	O
that	O
to	O
find	O
the	O
important	O
harmonic	O
content	O
of	O
a	O
single	O
frame	O
.	O
</s>
<s>
By	O
filtering	O
the	O
synthesized	O
segments	O
with	O
a	O
Hanning	B-Algorithm
filter	I-Algorithm
,	O
adding	O
two	O
overlapping	O
frames	O
together	O
will	O
produce	O
a	O
smooth	O
transition	O
between	O
the	O
two	O
.	O
</s>
<s>
This	O
also	O
applies	O
to	O
the	O
encoder	O
because	O
the	O
short	O
Fourier	O
transform	O
gives	O
better	O
results	O
when	O
the	O
data	O
is	O
pre-processed	O
with	O
a	O
Hanning	B-Algorithm
filter	I-Algorithm
.	O
</s>
