<s>
The	O
glissando	B-Application
illusion	I-Application
is	O
an	O
auditory	B-Application
illusion	I-Application
,	O
created	O
when	O
a	O
sound	O
with	O
a	O
fixed	O
pitch	O
,	O
such	O
as	O
a	O
synthesized	O
oboe	O
tone	O
,	O
is	O
played	O
together	O
with	O
a	O
sine	O
wave	O
gliding	O
up	O
and	O
down	O
in	O
pitch	O
,	O
and	O
they	O
are	O
both	O
switched	O
back	O
and	O
forth	O
between	O
stereo	O
loudspeakers	O
.	O
</s>
