<s>
In	O
signal	O
analysis	O
,	O
beat	B-Algorithm
detection	I-Algorithm
is	O
using	O
computer	B-Application
software	I-Application
or	O
computer	B-Architecture
hardware	I-Architecture
to	O
detect	O
the	O
beat	O
of	O
a	O
musical	O
score	O
.	O
</s>
<s>
There	O
are	O
many	O
methods	O
available	O
and	O
beat	B-Algorithm
detection	I-Algorithm
is	O
always	O
a	O
tradeoff	O
between	O
accuracy	O
and	O
speed	O
.	O
</s>
<s>
The	O
algorithms	O
used	O
may	O
utilize	O
simple	O
statistical	O
models	O
based	O
on	O
sound	O
energy	O
or	O
may	O
involve	O
sophisticated	O
comb	B-Algorithm
filter	I-Algorithm
networks	O
or	O
other	O
means	O
.	O
</s>
<s>
They	O
may	O
be	O
fast	O
enough	O
to	O
run	O
in	O
real	B-General_Concept
time	I-General_Concept
or	O
may	O
be	O
so	O
slow	O
as	O
to	O
only	O
be	O
able	O
to	O
analyze	O
short	O
sections	O
of	O
songs	O
.	O
</s>
