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*
1
:
Do not include other than
MP3/WMA/AAC files. However, if
storing many tracks within the same
folder, these may not be recognized
even if less than the maximum number
of tracks. In these cases, divide the
tracks up into multiple folders.
NOTE
l
The order in which folders and audio files
are displayed on this product may be differ-
ent to how they are displayed on a computer.
What Is MP3?
E00736400029
MP3 is the abbreviation of “MPEG-1 Audio
Layer 3”. MPEG is an abbreviation of “Mo-
tion Picture Experts Group”, and this is a vid-
eo compression standard used in video CDs,
etc.
MP3 is one of the audio compression meth-
ods contained in the MPEG audio standard,
and reduces the quality of sounds that are be-
yond the auditory resolution of the human ear
and that are hidden by louder sounds, thus
creating high-quality data with a lower data
size.
This can compress CD audio to approximate-
ly 1/10 its original data size without percepti-
ble loss, approximately 10 CDs can be writ-
ten to a single CD-R/RW disc.
CAUTION
l
MP3 files different to the standards at right
may not play back correctly, or file/folder
names may not be displayed correctly.
Standards for MP3 Files That
Can Be Played Back
Specifications for MP3 files that can be
played are as shown below.
Item Details
Specification
MPEG-1 AUDIO LAYER3
MPEG-2 AUDIO LAYER3
Sampling fre-
quency [kHz]
MPEG-1: 32/44.1/48
MPEG-2: 16/22.05/24
Bit rate [kbps]
MPEG-1: 32 to 320
MPEG-2: 8 to 160
VBR (varia-
ble bit rate)
Support
Channel
mode
Stereo/ Joint stereo/ Dual
channel/ Monaural
File exten-
sion
mp3
Item Details
Supported tag
information
ID3 tag Ver. 1.0, Ver. 1.1,
Ver. 2.2, Ver. 2.3, Ver. 2.4
(ISO-8859-1, UTF-16 (Uni-
code)), Titles, Artist name,
Album name
Maximum
number of
characters
that can be
indicated on
the display
64 characters
What Is WMA?
E00736601031
WMA is the abbreviation of Windows Media
Audio, and this is an audio compression for-
mat from Microsoft. This is a compression
format that has a higher compression ratio
than MP3.
NOTE
l
Microsoft, Windows Media, and Windows
are registered trademarks of Microsoft Cor-
poration (USA) and in other countries.
CAUTION
l
WMA supports digital rights management
(DRM). This product cannot play back
WMA files protected using this system.
Audio Files (MP3/WMA/AAC)
8-21
OGGE16E1
For pleasant driving
8
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