compression ratio Lexus ES350 2007 Audio/video System

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ES350_Navi_U (L/O 0603)
AUDIO/VIDEO SYSTEM
MP3/WMA files
MP3 (MPEG Audio Layer 3) and WMA
(Windows Media Audio) are audio
compression standards.
The MP3/WMA player can play MP3
and WMA files on CD-ROM, CD-R
and CD-RW discs.
The unit can play disc recordings com-
patible with ISO 9660 level 1 and level
2 and with the Romeo and Joliet file
system.
When naming an MP3 or WMA file, add
the appropriate file extension (.mp3 or
.wma).
The MP3/WMA player plays back files
with .mp3 or .wma file extensions as
MP3 or WMA files. To prevent noise
and playback errors, use the appropri-
ate file extensions.
The player can play only the first ses-
sion using multi-session compatible
CDs.
MP3 files are compatible with the ID3
Tag Ver. 1.0, Ver. 1.1, Ver. 2.2, and Ver.
2.3 formats. The unit cannot display
disc title, track title and artist name in
other formats.
WMA files can contain a WMA tag that
is used in the same way as an ID3 tag.
WMA tags carry information such as
track title, artist name.
The emphasis function is available
only when playing MP3/WMA files re-
corded at 32, 44.1 and 48 kHz. (The
system can play MP3 files with sam-
pling frequencies of 16, 22.05, and 24
kHz. However, the emphasis function
is not available for files recorded at
these frequencies.)
The sound quality of MP3/WMA files
generally improves with higher bit rate-
s. In order to achieve a reasonable lev-
el of sound quality, discs recorded with
a bit rate of at least 128 kbps are rec-
ommended.
Playable bit rates
MP3 files:
MPEG1 LAYER3Ð64 to 320 kbps
MPEG2 LSF LAYER3Ð64 to 160 kbps
WMA files:
Ver. 7, 8 CBRÐ48 to 192 kbps
Ver. 9 CBRÐ48 to 320 kbps
The MP3/WMA player does not play
back MP3/WMA files from discs re-
corder using packet write data transfer
(UDF format). Discs should be re-
corded using pre-masteringº software
rather than packet-write software.
The m3u playlists are not compatible
with the audio player.
MP3i (MP3 interactive) and MP3PRO
formats are not compatible with the au-
dio player.
The MP3 player is compatible with
VBR (Variable Bit Rate).
When playing back files recorded as
VBR (Variable Bit Rate) files, the play
time will not be correctly displayed if
fast-forward or reverse operations are
used.
It is not possible to check folders that
do not include MP3/WMA files.
MP3/WMA files in folders up to 8 levels
deep can be played. However, the
start of playback may be delayed when
using discs containing numerous lev-
els of folders. For this reason, we rec-
ommend creating discs with no more
than two levels of folders.
It is possible to play up to 192 folders or
255 files on one disc.