Sony NW-MS9 operating instructions Glossary, IS0

Glossary

ATRAC3

ATRAC3,

which

stands

for

Adaptive

Transform

Acoustic

Coding3,

is

audio

compression

technology

that

satisfies

the

demand

for

high

sound

quality

and

high

compression

rates

The ATRAC3

compression

rate is

approximately

10

times

higher

than

that

of the

Audio

CD,

resulting

an increased

data

capacity

for

the media

“Check-In

/Check-Out”

Check-out

is

to

transfer

music

files

from

a

personal

computer

to

an

external

device/media

(such

as Network

Walkman)

Returning

checked-out

music

files

to

the

same

computer

is to

check

in

(You

cannot

move

checked-out

music

files

to

another

computer

)

You can check-out

a music

file,

check

it back

in,

and

then

check

it out

again

an

infinite

number

of

times

The

SDMI

rules

provide

that

up

to

four

copies

of

a

music

file

can be

checked-out

at one

time

OpenMG

employs

a

method

whereby

three

copies

of

a

song

can

be checked-out

simultaneously,

while

the

fourth

copy

is

maintained

as

a

“master”

on

your

PC

If three

copies

of

the

same song

are

checked-out

at a

given

time,

one

copy

of

the song

needs

to be checked-in

to the

computer

in

order

to

create

an

additional

check-out

Bit

rate

Indicates

the

data

amount

per

second

The

rate

is

reflected

in

bps

(bit

per

second)

In

OpenMG

Jukebox,

the

bit

rate

for

recording

an audio

CD

or converting

MP3

and

WAV

format

audio

files

into

ATRACJ

format

can

be chosen

from

132 kbps/105kbps/66kbps

105

kbps

means

105000

bits

of information

per

second

If

the

bit

rate

is

large,

that means

a large

amount

of

information

is

used

to

play

music

Comparing

music

of

the

same

format,

a

105

kbps

data

offers

better

sound

quality

than

66

kbps

data, and

132 kbps

data

offers

better

sound

quality

than

105 kbps

data

However,

audio

files

in

formats

such

as

MI’3

have

different

encoding

methods,

and

thus sound

quality

cannot

be

determined

by

simply

comparing

the

bit

rate

“MagicGate

Memory

Stick”

A

compact

IC

recording

media

“Memory

Stick”

equipped

with

“MagicGate”

copyright

protection

technology

You

can

record

or

play

data,

such

as

music,

that

requires

copyright

protection

only

by

using

a

“MagicGate

Memory

Stick”

with

“MagicGate”

compatible

equipment

“MagicGate

Memory

Stick”

can

be

used

to

record

any

other

kind

of

digital

data

with

any other

“Memory

Stick”

compatible

equipment

“MagicGate

Memory

Stick”

is

distinguished

by

the

“MG”

and

“MAGIC

GATE”

logos

MP3

MP3,

which

stands

for

MPEG-1

Audio

Layer3,

a

standard

for

audio

files

compression

determined

by

the

Motion

Picture

Experts

Group,

an

IS0

(International

Organization

for

Standardization)

working

group

It enables

compression

of

audio

files

to

about

l/10

of the

data

size

of

a standard

compact

disc

Since

the

MI’3

encoding

algorithm

is

disclosed,

there

are

various

encoders/

decoders

that

are

compliant

with

this

standard,

including

freeware

that

is

available

for

no

charge

Thus,

the

MI’3

standard

is

widely

used

in

the

computer

field

36