<s>
Smaart	B-Operating_System
(	O
System	O
Measurement	O
Acoustical	O
Analysis	O
in	O
Real	O
Time	O
)	O
is	O
a	O
suite	O
of	O
audio	O
and	O
acoustical	O
measurements	O
and	O
instrumentation	O
software	O
tools	O
introduced	O
in	O
1996	O
by	O
JBL	O
's	O
professional	O
audio	O
division	O
.	O
</s>
<s>
Smaart	B-Operating_System
is	O
a	O
source-independent	O
analyzer	O
and	O
therefore	O
will	O
work	O
effectively	O
with	O
a	O
variety	O
of	O
test	O
signals	O
including	O
speech	O
or	O
music	O
.	O
</s>
<s>
The	O
product	O
has	O
been	O
known	O
as	O
JBL-SMAART	B-Operating_System
,	O
SIA-SMAART	B-Operating_System
Pro	I-Operating_System
,	O
EAW	B-Operating_System
SMAART	I-Operating_System
,	O
and	O
SmaartLive	B-Operating_System
.	O
</s>
<s>
As	O
of	O
2008	O
the	O
product	O
has	O
been	O
branded	O
as	O
simply	O
Smaart	B-Operating_System
.	O
</s>
<s>
An	O
acoustician	O
version	O
has	O
been	O
offered	O
as	O
Smaart	B-Operating_System
Acoustic	I-Operating_System
Tools	I-Operating_System
,	O
however	O
as	O
of	O
Smaart	B-Operating_System
v7.4	O
,	O
Acoustic	O
Tools	O
have	O
been	O
included	O
within	O
the	O
Impulse	O
Response	O
mode	O
of	O
Smaart	B-Operating_System
.	O
</s>
<s>
A	O
standalone	O
sound	O
pressure	O
level	O
monitoring	O
only	O
version	O
called	O
Smaart	B-Operating_System
SPL	O
was	O
released	O
in	O
2020	O
.	O
</s>
<s>
Smaart	B-Operating_System
is	O
a	O
real-time	O
single	O
and	O
dual-channel	O
fast	O
Fourier	O
transform	O
(	O
FFT	O
)	O
analyzer	O
.	O
</s>
<s>
Smaart	B-Operating_System
has	O
two	O
modes	O
:	O
Real-Time	O
Mode	O
and	O
impulse	O
response	O
mode	O
.	O
</s>
<s>
Smaart	B-Operating_System
has	O
been	O
licensed	O
and	O
owned	O
by	O
several	O
companies	O
since	O
JBL	O
and	O
is	O
currently	O
owned	O
and	O
developed	O
by	O
Rational	O
Acoustics	O
.	O
</s>
<s>
First	O
written	O
as	O
a	O
native	O
Windows	B-Application
3.1	I-Application
application	O
to	O
work	O
within	O
Windows	B-Application
95	I-Application
on	O
IBM-compatible	O
computers	O
,	O
in	O
2006	O
a	O
version	O
was	O
introduced	O
that	O
was	O
compatible	O
on	O
both	O
Windows	B-Application
and	O
Apple	B-Device
Macintosh	I-Device
operating	O
systems	O
.	O
</s>
<s>
Smaart	B-Operating_System
was	O
in	O
its	O
8th	O
version	O
.	O
</s>
<s>
Smaart	B-Operating_System
is	O
based	O
on	O
real-time	O
fast	O
Fourier	O
transform	O
(	O
FFT	O
)	O
analysis	O
,	O
including	O
dual-FFT	O
audio	O
signal	O
comparison	O
,	O
called	O
"	O
transfer	O
function	O
"	O
,	O
and	O
single-FFT	O
spectrum	O
analyzer	O
.	O
</s>
<s>
The	O
FFT	O
implementation	O
of	O
Smaart	B-Operating_System
includes	O
a	O
proprietary	O
multi-time	O
window	O
(	O
MTW	O
)	O
selection	O
in	O
which	O
the	O
FFT	O
,	O
rather	O
than	O
being	O
a	O
fixed	O
length	O
,	O
is	O
made	O
increasingly	O
shorter	O
as	O
the	O
frequency	O
increases	O
.	O
</s>
<s>
The	O
latest	O
version	O
of	O
Smaart	B-Operating_System
8	O
runs	O
under	O
Windows	B-Application
7	O
or	O
newer	O
,	O
and	O
Mac	B-Operating_System
OSX	I-Operating_System
10.7	O
or	O
newer	O
,	O
including	O
32	O
-	O
and	O
64-bit	O
versions	O
.	O
</s>
<s>
A	O
computer	O
having	O
a	O
dual-core	B-Architecture
processor	I-Architecture
with	O
a	O
clock	O
rate	O
of	O
at	O
least	O
2GHz	O
is	O
recommended	O
.	O
</s>
<s>
Smaart	B-Operating_System
can	O
be	O
set	O
to	O
sample	O
rates	O
of	O
44.1kHz	O
,	O
48kHz	O
or	O
96kHz	O
,	O
and	O
to	O
bit	O
depths	O
of	O
16	O
or	O
24	O
.	O
</s>
<s>
The	O
software	O
works	O
with	O
computer	O
audio	O
protocols	O
ASIO	B-Library
,	O
Core	B-Operating_System
Audio	I-Operating_System
,	O
WAV	O
or	O
WDM	B-Application
audio	O
drivers	O
.	O
</s>
<s>
Smaart	B-Operating_System
's	O
transfer	O
function	O
requires	O
a	O
stereo	O
input	O
to	O
the	O
computer	O
because	O
it	O
analyzes	O
two	O
channels	O
of	O
audio	O
signal	O
.	O
</s>
<s>
Using	O
its	O
dual-FFT	O
mode	O
,	O
Smaart	B-Operating_System
compares	O
one	O
channel	O
with	O
the	O
other	O
to	O
show	O
the	O
difference	O
.	O
</s>
<s>
The	O
first	O
channel	O
of	O
audio	O
undergoing	O
analysis	O
is	O
connected	O
directly	O
from	O
one	O
of	O
the	O
main	O
outputs	O
of	O
the	O
mixing	O
console	O
and	O
the	O
second	O
channel	O
is	O
connected	O
to	O
a	O
microphone	B-Application
placed	O
in	O
the	O
audience	O
listening	O
area	O
,	O
usually	O
an	O
omnidirectional	O
test	O
microphone	B-Application
with	O
a	O
flat	O
,	O
neutral	O
pickup	O
characteristic	O
.	O
</s>
<s>
The	O
direct	O
mixing	O
console	O
audio	O
output	O
is	O
compared	O
with	O
the	O
microphone	B-Application
input	O
to	O
determine	O
how	O
the	O
sound	O
is	O
changed	O
by	O
the	O
sound	O
system	O
elements	O
such	O
as	O
loudspeakers	O
and	O
amplifiers	O
,	O
and	O
by	O
the	O
room	O
acoustics	O
indoors	O
or	O
by	O
the	O
weather	O
conditions	O
and	O
acoustic	O
environment	O
outdoors	O
.	O
</s>
<s>
Smaart	B-Operating_System
displays	O
the	O
difference	O
between	O
the	O
intended	O
sound	O
from	O
the	O
mixer	O
and	O
the	O
received	O
sound	O
at	O
the	O
microphone	B-Application
,	O
and	O
this	O
real-time	O
display	O
informs	O
the	O
audio	O
engineer	O
's	O
decisions	O
regarding	O
delay	O
times	O
,	O
equalization	O
and	O
other	O
sound	O
system	O
adjustment	O
parameters	O
.	O
</s>
<s>
Although	O
pink	O
noise	O
is	O
a	O
traditional	O
choice	O
for	O
test	O
signal	O
,	O
Smaart	B-Operating_System
is	O
a	O
source-independent	O
analyzer	O
,	O
which	O
means	O
that	O
it	O
does	O
not	O
rely	O
on	O
a	O
specific	O
test	O
signal	O
to	O
produce	O
measurement	O
data	O
.	O
</s>
<s>
Transfer	O
function	O
measurements	O
can	O
also	O
be	O
used	O
to	O
examine	O
the	O
frequency	O
response	O
of	O
audio	O
equipment	O
,	O
including	O
individual	O
amplifiers	O
,	O
loudspeakers	O
and	O
digital	B-Architecture
signal	I-Architecture
processors	I-Architecture
such	O
as	O
audio	B-Algorithm
crossovers	I-Algorithm
and	O
equalizers	O
.	O
</s>
<s>
It	O
can	O
be	O
used	O
to	O
compare	O
a	O
known	O
neutral-response	O
test	O
microphone	B-Application
with	O
another	O
microphone	B-Application
in	O
order	O
to	O
better	O
understand	O
its	O
frequency	O
response	O
and	O
,	O
by	O
changing	O
the	O
angle	O
of	O
the	O
microphone	B-Application
under	O
test	O
,	O
its	O
polar	O
response	O
.	O
</s>
<s>
Transfer	O
function	O
measurements	O
can	O
be	O
used	O
to	O
adjust	O
audio	B-Algorithm
crossover	I-Algorithm
settings	O
for	O
multi-way	O
loudspeakers	O
;	O
similarly	O
,	O
they	O
can	O
be	O
used	O
to	O
adjust	O
only	O
the	O
subwoofer-to-top	O
box	O
crossover	B-Algorithm
characteristics	O
in	O
a	O
sound	O
system	O
where	O
the	O
main	O
,	O
non-subwoofer	O
loudspeakers	O
are	O
flown	O
or	O
rigged	O
but	O
the	O
subwoofers	B-Application
are	O
placed	O
on	O
the	O
ground	O
.	O
</s>
<s>
One	O
of	O
the	O
traces	O
in	O
the	O
Smaart	B-Operating_System
display	O
shows	O
phase	O
response	O
.	O
</s>
<s>
To	O
properly	O
align	O
adjacent	O
frequency	O
bands	O
through	O
a	O
crossover	B-Algorithm
,	O
the	O
two	O
phase	O
responses	O
should	O
be	O
adjusted	O
until	O
they	O
are	O
seen	O
in	O
Smaart	B-Operating_System
to	O
be	O
parallel	O
through	O
the	O
crossover	B-Algorithm
frequency	I-Algorithm
.	O
</s>
<s>
The	O
transfer	O
function	O
measurement	O
can	O
be	O
used	O
to	O
measure	O
frequency-related	O
electrical	O
impedance	O
,	O
one	O
of	O
the	O
electrical	B-Architecture
characteristics	I-Architecture
of	I-Architecture
dynamic	I-Architecture
loudspeakers	I-Architecture
.	O
</s>
<s>
Grateful	O
Dead	O
sound	O
system	O
engineer	O
"	O
Dr.	O
Don	O
"	O
Pearson	O
worked	O
out	O
the	O
method	O
in	O
2000	O
,	O
using	O
Smaart	B-Operating_System
to	O
compare	O
the	O
voltage	O
drop	O
through	O
a	O
simple	O
resistor	O
between	O
a	O
loudspeaker	O
and	O
a	O
random	O
noise	O
generator	O
.	O
</s>
<s>
In	O
Spectrograph	O
view	O
,	O
Smaart	B-Operating_System
displays	O
a	O
real-time	O
spectrum	O
analysis	O
,	O
showing	O
the	O
relative	O
strength	O
of	O
audio	O
frequencies	O
for	O
one	O
audio	O
signal	O
.	O
</s>
<s>
With	O
Smaart	B-Operating_System
's	O
input	O
connected	O
to	O
the	O
mixing	O
console	O
's	O
pre-fade	O
listen	O
(	O
PFL	O
)	O
or	O
cue	O
bus	O
,	O
Spectrograph	O
view	O
can	O
display	O
the	O
frequency	O
response	O
of	O
individual	O
channels	O
,	O
several	O
selected	O
channels	O
,	O
or	O
various	O
mixes	O
.	O
</s>
<s>
Spectrograph	O
mode	O
can	O
be	O
used	O
to	O
display	O
room	O
resonances	O
:	O
pink	O
noise	O
is	O
applied	O
to	O
the	O
room	O
's	O
sound	O
system	O
,	O
and	O
the	O
signal	O
from	O
a	O
test	O
microphone	B-Application
in	O
the	O
room	O
is	O
displayed	O
on	O
Smaart	B-Operating_System
.	O
</s>
<s>
Smaart	B-Operating_System
can	O
be	O
used	O
to	O
find	O
the	O
delay	O
time	O
between	O
two	O
signals	O
,	O
in	O
which	O
case	O
the	O
computer	O
needs	O
two	O
input	O
channels	O
and	O
the	O
software	O
uses	O
a	O
transfer	O
function	O
measurement	O
engine	O
.	O
</s>
<s>
Veteran	O
Van	O
Halen	O
touring	O
sound	O
engineer	O
Jim	O
Yakabuski	O
calls	O
such	O
delay	O
locator	O
programs	O
as	O
Smaart	B-Operating_System
a	O
"	O
must	O
have	O
"	O
item	O
,	O
useful	O
for	O
quickly	O
aligning	O
sound	O
system	O
elements	O
when	O
setup	O
time	O
is	O
limited	O
.	O
</s>
<s>
Smaart	B-Operating_System
is	O
primarily	O
aimed	O
at	O
sound	O
system	O
operators	O
to	O
assist	O
them	O
in	O
setting	O
up	O
and	O
tuning	O
sound	O
systems	O
.	O
</s>
<s>
Author	O
and	O
sound	O
engineer	O
Bob	O
McCarthy	O
wrote	O
in	O
2007	O
that	O
because	O
of	O
Smaart	B-Operating_System
's	O
widespread	O
acceptance	O
at	O
all	O
levels	O
of	O
live	O
sound	O
mixing	O
,	O
the	O
paradigm	O
has	O
reversed	O
from	O
the	O
1980s	O
one	O
of	O
surprise	O
at	O
finding	O
scientific	O
tools	O
in	O
the	O
concert	O
sound	O
scene	O
to	O
one	O
of	O
surprise	O
if	O
the	O
observer	O
finds	O
that	O
such	O
tools	O
are	O
not	O
being	O
used	O
to	O
tune	O
a	O
sound	O
system	O
.	O
</s>
<s>
Smaart	B-Operating_System
has	O
been	O
compared	O
to	O
other	O
software-based	O
sound	O
system	O
measurement	O
tools	O
such	O
as	O
SIM	O
by	O
Meyer	O
Sound	O
Laboratories	O
and	O
IASYS	O
by	O
Audio	O
Control	O
,	O
both	O
of	O
which	O
offer	O
delay	O
finder	O
tools	O
.	O
</s>
<s>
Smaart	B-Operating_System
has	O
been	O
described	O
as	O
"	O
a	O
newer	O
,	O
slimmer	O
and	O
much	O
cheaper	O
—	O
but	O
not	O
necessarily	O
better	O
—	O
version	O
of	O
the	O
Meyer	O
SIM	O
system.	O
"	O
</s>
<s>
MLSSA	O
,	O
developed	O
by	O
DRA	O
Laboratories	O
in	O
1987	O
,	O
and	O
TEF	O
,	O
a	O
time	O
delay	O
spectrometry	O
product	O
by	O
Gold	O
Line	O
,	O
are	O
other	O
products	O
predating	O
Smaart	B-Operating_System
that	O
are	O
used	O
to	O
tune	O
loudspeakers	O
such	O
as	O
studio	B-Device
monitors	I-Device
.	O
</s>
<s>
A	O
software	O
tool	O
that	O
reached	O
Mac	B-Device
users	O
in	O
1997	O
was	O
named	O
SpectraFoo	O
,	O
by	O
Metric	O
Halo	O
.	O
</s>
<s>
At	O
the	O
same	O
time	O
,	O
some	O
early	O
Smaart	B-Operating_System
users	O
found	O
that	O
after	O
tweaking	O
their	O
MIDI	O
drivers	O
they	O
could	O
get	O
Smaart	B-Operating_System
to	O
work	O
on	O
an	O
Apple	O
computer	O
,	O
the	O
software	O
running	O
inside	O
an	O
x86	O
emulator	O
such	O
as	O
SoftWindows	B-Device
"	O
with	O
varying	O
results	O
"	O
.	O
</s>
<s>
As	O
well	O
,	O
Pearson	O
had	O
an	O
"	O
intimate	O
involvement	O
"	O
with	O
the	O
engineers	O
who	O
were	O
creating	O
Smaart	B-Operating_System
,	O
including	O
a	O
meeting	O
with	O
Jamie	O
Anderson	O
.	O
</s>
<s>
Smaart	B-Operating_System
was	O
developed	O
by	O
Sam	O
Berkow	O
in	O
association	O
with	O
Alexander	O
"	O
Thorny	O
"	O
Yuill-Thornton	O
II	O
,	O
touring	O
sound	O
engineer	O
with	O
Luciano	O
Pavarotti	O
and	O
The	O
Three	O
Tenors	O
.	O
</s>
<s>
In	O
1995	O
,	O
Berkow	O
and	O
Thorny	O
founded	O
SIA	O
Software	O
Company	O
,	O
produced	O
Smaart	B-Operating_System
and	O
licensed	O
the	O
product	O
to	O
JBL	O
.	O
</s>
<s>
Studio	O
Sound	O
magazine	O
described	O
Smaart	B-Operating_System
in	O
1996	O
as	O
"	O
the	O
most	O
talked	O
about	O
new	O
product	O
"	O
at	O
the	O
100th	O
AES	O
convention	O
in	O
Copenhagen	O
,	O
exemplifying	O
a	O
new	O
trend	O
in	O
software	O
audio	O
measurement	O
.	O
</s>
<s>
Smaart	B-Operating_System
was	O
unusual	O
because	O
it	O
helped	O
audio	O
professionals	O
such	O
as	O
theatrical	O
sound	O
designers	O
do	O
what	O
was	O
previously	O
possible	O
only	O
with	O
highly	O
sophisticated	O
and	O
expensive	O
measurement	O
devices	O
.	O
</s>
<s>
Audio	O
system	O
engineers	O
from	O
Clair	O
Brothers	O
used	O
Smaart	B-Operating_System
to	O
tune	O
the	O
sound	O
system	O
at	O
each	O
stop	O
during	O
U2	O
's	O
PopMart	O
Tour	O
1997	O
–	O
1998	O
.	O
</s>
<s>
As	O
it	O
increased	O
in	O
popularity	O
,	O
engineers	O
who	O
used	O
Smaart	B-Operating_System
found	O
mixed	O
results	O
:	O
touring	O
veteran	O
Doug	O
Fowler	O
wrote	O
that	O
"	O
misuse	O
was	O
rampant	O
"	O
when	O
the	O
software	O
first	O
started	O
appearing	O
in	O
the	O
field	O
.	O
</s>
<s>
Nevertheless	O
,	O
Clive	O
Young	O
,	O
editor	O
of	O
Pro	O
Sound	O
News	O
,	O
wrote	O
in	O
2005	O
that	O
the	O
introduction	O
of	O
Smaart	B-Operating_System
in	O
1995	O
was	O
the	O
start	O
of	O
"	O
the	O
modern	O
era	O
of	O
sound	O
reinforcement	O
system	O
analysis	O
software	O
"	O
.	O
</s>
<s>
In	O
1998	O
,	O
JBL	B-Operating_System
Smaart	I-Operating_System
Pro	I-Operating_System
won	O
the	O
TEC	O
Awards	O
category	O
for	O
computer	O
software	O
and	O
peripherals	O
.	O
</s>
<s>
Version	O
3	O
was	O
introduced	O
under	O
EAW	O
's	O
ownership	O
,	O
with	O
the	O
additional	O
capability	O
of	O
accepting	O
optional	O
plug-ins	B-Application
which	O
could	O
be	O
used	O
to	O
apply	O
sound	O
system	O
adjustments	O
,	O
as	O
measured	O
by	O
Smaart	B-Operating_System
,	O
to	O
digital	O
signal	O
processing	O
(	O
DSP	O
)	O
equipment	O
.	O
</s>
<s>
The	O
external	O
third	O
party	O
DSP	O
would	O
perform	O
the	O
corrections	O
indicated	O
by	O
Smaart	B-Operating_System
.	O
</s>
<s>
For	O
version	O
6	O
,	O
the	O
designers	O
decided	O
to	O
tear	O
Smaart	B-Operating_System
back	O
down	O
to	O
its	O
basics	O
and	O
rebuild	O
it	O
on	O
a	O
flexible	O
multi-tasking	O
,	O
multi-platform	O
framework	O
which	O
would	O
allow	O
it	O
to	O
be	O
used	O
on	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
and	O
Windows	B-Application
machines	O
.	O
</s>
<s>
Smaart	B-Operating_System
6	O
was	O
nominated	O
for	O
a	O
TEC	O
Award	O
in	O
2007	O
but	O
did	O
not	O
win	O
.	O
</s>
<s>
EAW	O
developed	O
a	O
digital	O
mixing	O
console	O
prototype	O
in	O
2005	O
,	O
the	O
UMX.96	O
;	O
a	O
console	O
which	O
incorporated	O
SmaartLive	B-Operating_System
5	O
internally	O
.	O
</s>
<s>
Any	O
selected	O
channel	O
on	O
the	O
mixer	O
could	O
be	O
used	O
as	O
a	O
source	O
for	O
Smaart	B-Operating_System
analysis	O
,	O
displaying	O
,	O
for	O
instance	O
,	O
the	O
real-time	O
results	O
of	O
channel	O
equalization	O
.	O
</s>
<s>
The	O
console	O
could	O
be	O
configured	O
to	O
send	O
multiple	O
microphone	B-Application
inputs	O
to	O
Smaart	B-Operating_System
,	O
and	O
it	O
offered	O
constant	O
metering	O
of	O
sound	O
pressure	O
level	O
in	O
decibels	O
.	O
</s>
<s>
With	O
its	O
15-inch	O
touchscreen	B-Device
able	O
to	O
serve	O
both	O
audio	O
control	O
and	O
Smaart	B-Operating_System
analysis	O
functions	O
,	O
Dodge	O
continued	O
to	O
mix	O
Foreigner	O
on	O
it	O
throughout	O
2007	O
and	O
2008	O
.	O
</s>
<s>
On	O
November	O
9	O
,	O
2009	O
,	O
under	O
the	O
leadership	O
of	O
Jamie	O
and	O
Karen	O
Anderson	O
,	O
programmer	O
Adam	O
Black	O
and	O
technical	O
chief	O
Calvert	O
Dayton	O
,	O
Rational	O
Acoustics	O
became	O
the	O
full	O
owner	O
of	O
the	O
Smaart	B-Operating_System
brand	O
.	O
</s>
<s>
Rational	O
released	O
Smaart	B-Operating_System
7	O
on	O
April	O
14	O
,	O
2010	O
;	O
a	O
version	O
which	O
uses	O
less	O
processing	O
power	O
than	O
v5	O
and	O
v6	O
because	O
of	O
efficiencies	O
brought	O
about	O
in	O
the	O
redesigned	O
code	O
.	O
</s>
<s>
Smaart	B-Operating_System
7	O
was	O
written	O
using	O
a	O
new	O
object-oriented	B-Language
code	I-Language
architecture	O
,	O
it	O
was	O
given	O
improved	O
data	O
acquisition	O
.	O
</s>
<s>
Other	O
new	O
features	O
include	O
graphic	B-Application
user	I-Application
interface	I-Application
changes	O
and	O
delay	O
tracking	O
.	O
</s>
<s>
Users	O
can	O
run	O
simultaneously	O
displayed	O
real-time	O
measurements	O
in	O
multiple	O
windows	B-Application
,	O
as	O
many	O
as	O
their	O
computer	O
hardware	O
will	O
allow	O
.	O
</s>
<s>
Smaart	B-Operating_System
7	O
was	O
nominated	O
in	O
2010	O
for	O
a	O
TEC	O
Award	O
but	O
did	O
not	O
win	O
.	O
</s>
<s>
In	O
April	O
2011	O
,	O
Smaart	B-Operating_System
7	O
was	O
named	O
one	O
of	O
four	O
Live	O
Design	O
Sound	O
Products	O
of	O
the	O
Year	O
2010	O
–	O
2011	O
.	O
</s>
