About Mp3 Files - Sony CDP-CX455 Primary Operating Instructions Manual

Notes on CD-R and CD-RW discs
This unit can play the following discs:
Type of discs
Audio CD
MP3 files
• Some CD-Rs/CD-RWs (depending on the equipment used
for their recording or the condition of the disc) may not
play on this player.
• You cannot play a CD-R/CD-RW that is not finalized*.
* A process necessary for a recorded CD-R/CD-RW disc to
be played on the audio CD player.

About MP3 files

MP3 (MPEG 1 Audio Layer-3) is a standard technology
and format for compressing a sound sequence. The file
is compressed to about 1/10 of its original size. Sounds
outside the range of human hearing are compressed
while the sounds we can hear are not compressed.
Playback of some MP3 files may not be possible,
depending on the encoding.
The encoding method (i.e., the bit rate selected for
encoding) will affect the sound quality of the MP3 files
created. The bit rate typically used for MP3 files is
128 kbps.
Label on the disc
Notes on discs
You can play MP3 files recorded on CD-ROMs, CD-Rs
(recordable CDs), and CD-RWs (rewritable CDs).
The disc must be in the ISO 9660*
format, or Joliet or Romeo in the expansion format.
You can use a disc recorded in Multi Session*
* 1 ISO 9660 Format
The most common international standard for the
logical format of files and folders on a CD-ROM.
There are several specification levels. In Level 1, file
names must be in the 8.3 format (no more than eight
characters in the name, no more than three
characters in the extension ".MP3") and in capital
letters. Folder names can be no longer than eight
characters. There can be no more than eight nested
folder levels. Level 2 specifications allow file names
up to 31 characters long.
Each folder can have up to 8 trees.
For Joliet or Romeo in the expansion format, make
sure of the contents of the writing software, etc.
* 2 Multi Session
This is a recording method that enables adding of
data using the Track-At-Once method. Conventional
CDs begin at a CD control area called the Lead-in
and end at an area called Lead-out. A Multi Session
CD is a CD having multiple sessions, with each
segment from Lead-in to Lead-out regarded as a
single session.
CD-EXTRA: A format in which CD-DA (audio) data
are recorded in the tracks of session 1 and computer
data in the tracks of session 2.
Mixed CD: A format in which computer data are
recorded in the first track and CD-DA (audio) data in
the following tracks within a session.
1 level 1 or level 2
2
.
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