ENGLISH
E-17
Glossary
Bit rate
The bit r
ate e
xpresses the amount of inf
or
mation tr
ansf
erred
per second as a n
umber of bits
. The g
reater the quantity of
inf
or
mation, the higher the bit r
ate
.
The unit is
“bits/second”.
“kbps”
indicates
“kilo (1,000) bits/
second”.
Emphasis
The softw
are used f
or recording has an
“emphasis”
capabil-
ity
, which when tur
ned on wr
ites emphasis attr
ib
utes on to
the audio tr
ac
k.
When the emphasis bit is set the sound has a
smooth char
acter
istic.
Ho
w
e
v
e
r, at the current time almost all
CD pla
y
ers lac
k suppor
t f
or this function.
It is no prob
lem to
pla
y bac
k an audio tr
ac
k recorded with emphasis on with a
pla
y
er not suppor
ting emphasis
.
Extension
In
Windo
ws and DOS personal computers
, se
v
e
ral char
ac-
ters are placed at the end of each file name to indicate the
type of file
.
The e
xtension consists of a per
iod f
ollo
w
ed b
y
three alphan
u-
mer
ic char
acters
. The e
xtension diff
ers depending on file type
.
The e
xtension f
or MP3 files is
“.mp3”.
ID3 T
ags
This is a data f
o
rmat that allo
ws a file name
, title and ar
tist
name etc.
to be added to MP3 files
.
This unit suppor
ts SONG ALB
UM and AR
TIST f
or
V
ersions
1.0/1.1/2.2 and 2.3.
ID3
T
ags are not suppor
ted f
or
WMA files
.
Multi-Session
When data is wr
itten on a CD-R disc
, the data wr
itten from
the time wr
iting star
ts until the time wr
iting finishes is regarded
as a b
undle called a session.
The
T
rac
k at Once Method al-
lo
ws data to be added to a single disc one tr
ac
k at a time
,
with each recording of a tr
ac
k being a single session.
The ter
m m
ultisession ref
ers to the method of recording the
data f
or tw
o or more sessions on a single disc.
W
e
recom-
mend that this unit be used f
or up to 10 sessions
.
Structure of Folder Hierarchy
T
o
k
eep data within a computer organiz
ed, related files ma
y
be put into a f
older
, b
ut in addition to files
, a f
older ma
y also
ha
v
e
other f
olders put into it.
F
older B ma
y be put into f
older
A, and f
older C ma
y be put into f
older B so as to create a
“hier
archical str
ucture”.
The n
umber of hier
archical le
v
els that
can be recogniz
ed diff
ers depending on the computer oper
at-
ing system.
ISO9660 specifies up to 8 le
v
els
.
VBR (V
ariable Bit Rate)
MP3 files are nor
mally encoded with a fix
ed bit r
ate (eg
128kbps etc.), ho
w
e
v
er
VBR encoding dur
ing which the bit
rate is v
a
ried while encoding is also possib
le
. That is to sa
y,
dur
ing per
iods of violent v
a
riation of sound the bit r
ate is in-
creased and dur
ing soundless per
iods the bit r
ate is de-
creased.
Encoding in this w
a
y allo
ws file siz
e to be curbed
while maintaining high sound quality
. Ho
w
e
v
e
r, some pla
y
ers
do not suppor
t
VBR, so caution is required when using
VBR.
T
ypes of CD
•
A
udio CD(CD-D
A)
This is the f
o
rmat used f
or audio CDs that can be pla
y
ed on
ordinar
y audio CD pla
y
ers
. It is also called CD-D
A (Com-
pact Disc Digital A
udio).
•
ISO9660 Format CD-R
OM
ISO9660 is a CD-R
OM standard file system deter
mined b
y
ISO (Inter
national Organization f
or Standardization).
CD-
R
OMs with this f
o
rmat can be pla
y
ed b
y
Windo
ws and
Macintosh oper
ating systems and also b
y
UNIX oper
ating
systems
.
•
HFS Format CD-R
OM
This is a CD-R
OM conf
or
ming to the HFS (Hier
archical File
System) used b
y
Macintosh Mac OS
.
•
Hybrid CD-R
OM
This is a CD-R
OM containing a mixture of ISO9660 f
o
rmat
files and HFS f
o
rmat files
.
•
Mix
ed Mode CD
This is a CD-R
OM containing both data files and audio files
on the one disc.
Mix
ed Mode CD is a standard de
v
eloped f
or personal com-
puter use so the audio files on the CD cannot be pla
y
e
d
with CD pla
y
ers that do not suppor
t Mix
ed Mode CD
.
•
CD Extra (Enhanced CD)
This diff
ers from Mix
ed Mode CD in that the audio files are
follo
w
ed on the disc b
y
data files
. CD Extra w
as standard-
iz
ed b
y
Son
y and Philips to allo
w the audio files to be pla
y
e
d
with an audio CD pla
y
er and the data files to be read b
y
a
personal computer
.
