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

Page 73
Image 73
Sony NW-MS9 operating instructions Glossary, IS0