<s>
Spectral	O
patterns	O
recognisable	O
by	O
machine	O
learning	O
techniques	O
such	O
as	O
neural	B-Architecture
networks	I-Architecture
.	O
</s>
<s>
Sometimes	O
the	O
onset	B-Application
detector	I-Application
can	O
be	O
restricted	O
to	O
a	O
particular	O
domain	O
(	O
depending	O
on	O
intended	O
application	O
)	O
,	O
for	O
example	O
being	O
targeted	O
at	O
detecting	O
percussive	O
onsets	O
.	O
</s>
