<s>
Overhead	B-Algorithm
microphones	I-Algorithm
are	O
those	O
used	O
in	O
sound	O
recording	O
and	O
live	O
sound	O
reproduction	O
to	O
pick	O
up	O
ambient	O
sounds	O
,	O
transients	O
and	O
the	O
overall	O
blend	O
of	O
instruments	O
.	O
</s>
