ENGLISH
E-15
This unit can pla
y bac
k files recorded in MP3 or
WMA f
o
rmat
on CD-R
OM, CD-R (recordab
le) or CD-R
W (re
wr
itab
le) discs
.
There are some limitations on the files and media that can be
used, so bef
ore recording files on a disc please carefully read
the f
ollo
wing inf
or
mation.
ISO9660 Format
The unit can pla
y bac
k data recorded in ISO9660 f
o
rmat.
ISO9660 is an inter
national standard f
or representativ
e CD-
R
OM file f
o
rmats deter
mined b
y
ISO (Inter
national Standard
Organization).
The media f
o
rmats that can be used b
y
the unit include Le
v
e
l
1, Le
v
el 2 and the e
xtension f
o
rmat kno
wn as Joliet.
What are MP3 and WMA?
•
An MP3 file stores audio data compressed using the
“MPEG
1 / 2 audio la
y
er-3”
file f
o
rmat.
W
e
call files that ha
v
e
the
“.mp3”
e
xtension
“MP3 files”.
Lik
e
wise f
or
WMA files
. WMA
is an ab
bre
viation f
or
Windo
ws Media A
udio
. WMA files ha
v
e
the e
xtension
“.wma”
and are compatib
le with MP3 files
.
•
The unit cannot read files that ha
v
e
a file e
xtension diff
er-
ent from
“.mp3”
or
“.wma”.
•
The unit cannot read files without an e
xtension e
v
en if the
files are MP3 or
WMA files
.
Fur
ther
more e
v
en if a file has an
“.mp3”
or
“.wma”
e
xten-
sion, the unit cannot read the file if is not recorded with the
MP3 or
WMA data f
o
rmat.
Playback Limitations
•
The n
umber of tr
ac
ks and n
umber of alb
ums (f
older) that
can be pla
y
ed bac
k from a disc are as f
ollo
ws
.
T
rac
ks
:
About 250 depending on file contents
.
Alb
ums(f
older)
:
A
maximum of 250 depending on the num-
ber of tr
ac
ks
.
The unit also recogniz
es up to eight alb
um(f
older) le
v
els
.
•
The unit can pla
ybac
k MP3 files with compression bit r
ates
from 32kbps~320kbps
. Ho
w
e
v
er f
or the best balance of file
space and sound quality w
e
recommend 128kbps
.
When
files compressed at less than 128kbps are pla
y
ed bac
k, the
sound ma
y ha
v
e
breaks in it.
Sampling r
ates are suppor
ted as f
ollo
ws.
MPEG 1
48k
44.1k
32k
MPEG 2
24k
22.05k
16k
MPEG 2.5
12k
11.03k
8k
In the case of
WMA files
, pla
y bac
k is possib
le only f
or files
encoded with a compression bit r
ate of at least 64kbps and
a sampling r
ate of 44.1 kHz.
•
Please note that the unit cannot pla
y files encoded using
the
WMA cop
yr
ight protection function.
•
When pla
ying
WMA files
, song, alb
um and ar
tist tags can-
not be displa
y
ed.
•
The unit allo
ws the pla
ybac
k of CD-R and CD-R
W discs
containing a mixture of m
usic CD data (CD-D
A), MP3 and
WMA files
. Ho
w
e
v
er pla
ybac
k of both types of data is pos-
sib
le only f
or Mix
ed Mode CDs/CD Extr
a created using Disc
at Once Method.
(See belo
w
.)
•
The unit also suppor
ts files compressed using
VBR (v
ar
i-
ab
le bit r
ate).
•
The unit does not alw
a
ys pla
y bac
k MP3 and
WMA files in
the order in which the
y w
ere recorded.
•
When man
y f
olders are recorded on a disc
, the time required
to f
etch inf
or
mation from the disc becomes longer
.
•
W
e
recommend that m
ulti-session discs be limited to 10 sessions
.
The packet write method is not supported.
The f
ollo
wing three methods are used to record data (files)
on a disc.
As the unit does not suppor
t the
“P
ac
k
et
Wr
ite”
method please be a
w
are of this
.
The unit suppor
ts discs recorded with the
“Disc at Once”
and
“T
ra
c
k
at Once”
methods
.
Disc at Once Method
With this method, all the data to be wr
itten is prepared in ad-
v
ance and then recorded on the disc in one go
. Additional
wr
iting of data is not possib
le
.
T
rack at Once Method
With this method, data is wr
itten in file (tr
ac
k) units
. Addi-
tional wr
iting of data is possib
le
.
Packet W
rite Method
With this method, tr
ac
ks are sub-divided into pac
k
ets depend-
ing on a
v
ailability of space on the disc.
Additional wr
iting of
data is possib
le
.
Display Information Limitations
•
The unit can displa
y f
older and file names
, ID3
T
ags of length
up to 64 char
acters including the e
xtension.
Ho
w
e
v
e
r, cer-
tain special symbols ma
y not displa
y correctly
.
•
Dur
ing pla
ybac
k of MP3 and
WMA files
, there ma
y be occa-
sions when the elapsed pla
ybac
k time is not correctly dis-
pla
y
ed.
Important Points
•
Please tak
e care not to append the e
xtensions f
or MP3 and
WMA files onto files of an
y other type
. When a disc contain-
ing such files is pla
y
ed, the files will be incorrectly recog-
niz
ed and pla
y
ed bac
k.
This will result in e
xtremely loud noise
that ma
y damage the speak
ers
.
•
Depending on the state of the disc or recorder or wr
iting
softw
are used to wr
ite on the disc
, there ma
y be cases when
the disc cannot be correctly pla
y
ed bac
k.
In such cases
please ref
er to the user man
ual f
or the tools y
ou are using.
•
When using a Macintosh personal computer
, the file e
xten-
sion will not be added, so please add the e
xtension
“.mp3”
to the end of the file name
.
•
This unit does not suppor
t
W
A
VE files
.
•
This unit does not suppor
t m3u pla
ylists
.
•
The unit does not suppor
t
“Emphasis”.
(See
“Glossar
y”
on
page 17.)
MP3 / WMA Overview
