<s>
WaveSurfer	B-Application
is	O
an	O
audio	B-Application
editor	I-Application
widely	O
used	O
for	O
studies	O
of	O
acoustic	O
phonetics	O
.	O
</s>
<s>
It	O
can	O
read	O
and	O
write	O
a	O
number	O
of	O
transcription	O
file	O
formats	O
used	O
in	O
industrial	O
speech	O
research	O
including	O
TIMIT	B-Application
.	O
</s>
<s>
WaveSurfer	B-Application
is	O
free	B-Application
software	I-Application
,	O
distributed	O
under	O
a	O
permissive	B-License
free	I-License
software	I-License
licence	I-License
.	O
</s>
<s>
Wavesurfer	B-Application
provides	O
basic	O
audio	B-Application
editing	I-Application
operations	O
,	O
such	O
as	O
excision	O
,	O
copying	O
,	O
pasting	O
,	O
zero-crossing	O
adjustment	O
,	O
and	O
effects	O
such	O
as	O
fading	O
,	O
normalization	O
,	O
echo	O
,	O
inversion	O
,	O
reversal	O
,	O
replacement	O
with	O
silence	O
,	O
and	O
DC-removal	O
,	O
but	O
,	O
in	O
view	O
of	O
its	O
scientific	O
orientation	O
,	O
does	O
not	O
offer	O
effects	O
of	O
interest	O
to	O
musicians	O
such	O
as	O
flange	O
.	O
</s>
<s>
Wavesurfer	B-Application
is	O
written	O
in	O
Tcl/Tk	B-Application
using	O
the	O
Snack	B-Library
audio	I-Library
library	I-Library
.	O
</s>
<s>
It	O
therefore	O
runs	O
on	O
most	O
platforms	O
,	O
including	O
Microsoft	B-Application
Windows	I-Application
,	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
,	O
Linux	B-Application
,	O
Solaris	B-Application
,	O
HP-UX	B-Application
,	O
FreeBSD	B-Operating_System
,	O
and	O
IRIX	B-Operating_System
.	O
</s>
