Sony MP3 Walkman - Key Audio Technologies; Supported Music Formats; ATRAC Audio Compression; AAC Audio Coding

KEY TECHNOLOGY
Music Formats Supported
S
ony dedicated Walkmans and the su
pp
lied
S
onicStage
C
P (v4.0) software supports a wide
r
an
g
e of today’s most popular audio file formats.ˇ
T
hese include MP3
,
WMA
,
AAC and ATRAC
.
A
ll current
f
lash Walkman su
pp
ort these
f
ormats
natively, meaning that there is no conversion
needed to transfer these music files onto the
W
alkman. This makes it easy
f
or anyone who
already has a collection of music to transfer and
enjoy them without any hassles.
ATRAC (Adaptive Transform
Acoustic Coding)
A
TRA
C
is an advanced form of audio
c
ompression that utilizes a more efficient audio
encoding process to deliver superior quality
a
u
di
o at very
high
compress
i
on
l
eve
l
s.
I
t was
s
pecifically designed for use in portable audio
players in light or the requirements for longer
b
attery li
f
e and limited
f
ile s
p
aces
f
or
s
ong storage
.
AAC (Advanced Audio Coding)
AA
C
is the latest addition to the famil
y
of
W
alkman-supported
f
ormats. It was desi
g
ned
a
s the successor to the popular MP3 format and
is a widely accepted format amongst key digital
a
u
di
o
pl
ayers to
d
ay.
I
t was co-
d
eve
l
o
p
e
d
b
y
major companies including Dolby, Fraunhofer,
AT
&
T, Nokia and of course
S
on
y.
Organic EL Display
The
O
rganic EL
(
Electro
L
uminescent
)
Dis
p
lay is a
tec
h
no
l
ogy t
h
at ut
ili
ses an organ
i
c
compound layer in the screen to
d
e
li
ver a s
h
ar
p
er
di
s
pl
ay t
h
at
i
s
e
asy on t
h
e eyes.
Th
e organ
i
c
l
ayer
g
enerates its own light so there
is no need
f
or a backli
g
ht, which
would consume more power
.
I
n summary, users
g
et
i
mprove
d
visual clarit
y
and batter
y
p
er
f
ormance
.
Rapid Recharge
Rapid Recharge is a feature that allows the user to gain up to
3
hours of
battery power, after only char
g
in
g
the Walkman for
3
minutes!
S
hould a user forget to charge their battery, all they need to do is charge
t
heir Walkman
f
or a
f
ew minutes and they will have enou
g
h power to last
t
hem for a workout at the gym, travel to work, or even an interstate trip.
R
ap
id
R
ec
h
ar
g
e
i
s
available on ALL dedicated
Fla
s
h
Walk
m
a
ns.
Noise-Cancelling
N
oise is a
f
actor in man
y
o
f
our li
f
est
y
les.
W
e hear it in the en
g
ine noise o
f
a bus or a
plane and even in places such as shopping
malls and
p
arks where all sorts o
f
sounds mix.
T
his background noise can interfere with your
a
u
di
o en
j
oyment an
d
can st
ill
come t
h
rou
gh
even a great set of headphones
.
For this reason Sony offer head
p
hones with
‘Noise-
C
ancelling’ technology. This means that
t
he head
p
hones have micro
p
hones built-in to
th
em t
h
at can
pi
c
k
u
p
am
bi
ent no
i
se an
d
out
p
ut
a
signal that effectively ‘neutralises’ or ‘cancels’
t
he noise out. Dependin
g
on the de
g
ree o
f
c
ancellation, you can have u
p
to
8
0
%
o
f
a
m
bi
ent
b
ac
kg
roun
d
no
i
se cut out
!
Thi
s removes more unwante
d
soun
d
s, an
d
a
ll
ows
more pure mus
i
c to reac
h
your ears
i
nstea
d
.
I
n a
ddi
t
i
on to no
i
se-cance
lli
n
g
h
ea
d
p
h
ones,
t
he new
S700
series Walkmans have noise
-
c
ancelling technology† built-in as well, making
b
oth these devices
p
er
f
ect
f
or those who are
s
erious about sound or simply just want to cut
t
he clutter.
† Noise cancellin
g
function reduces the ambient noise by up
t
o 7
5
%. It does not cancel all ambient noise
.
Ambient Noise Detected
Neutralising Output Signal
Resultant Noise Level
dB
0
Time
Th
e m
i
cro
ph
one use
d
i
n
no
i
se-cance
lli
n
g
tec
h
no
l
o
gy
p
icks u
p
ambient noise
f
rom
t
he back
g
round environment
a
nd outputs an equal and
o
pposite signal effectively
neutralising the sound wave
o
f the noise
.
ˇ
Audio format support varies on Walkman phones. Please check phone specifications
.
www.sony.com.au
66
q
PERSONAL ENTERTAINMENT