compression ratio lexus LC500 2018 Navigation Manual

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4-6. Tips for operating the audio/visual system
MP3 (MPEG Audio Layer 3),
WMA (Windows Media Audio) and
AAC (Advanced Audio Coding)
are audio compression standards.
 This system can play
MP3/WMA/AAC files on CD-
R/CD-RW/DVD-R/DVD-RW
discs and USB memory.
 This system can play disc recordings
compatible with ISO 9660 level 1
and level 2 and with the Romeo and
Joliet file system and UDF (2.01 or
lower).
 When naming an
MP3/WMA/AAC file, add an
appropriate file extension
(.mp3/.wma/.m4a).
 This system plays back files with
.mp3/.wma/.m4a file extensions as
MP3/WMA/AAC files respectively.
To prevent noise and playback
errors, use the appropriate file
extension.
 This system can play only the first
session/border when using multi
session/border compatible discs.
 MP3 files are compatible with the
ID3 Tag Ver. 1.0, Ver. 1.1, Ver. 2.2 and
Ver. 2.3 formats. This system cannot
display disc title, track title and artist
name in other formats.
 WMA/AAC files can contain a
WMA/AAC tag that is used in the
same way as an ID3 tag.
WMA/AAC tags carry information
such as track title and artist name.
 The emphasis function is available
only when playing MP3 files.
 This system can play back AAC files
encoded by iTunes.
 m3u playlists are not compatible
with the audio player.
 MP3i (MP3 interactive) and MP3-
PRO formats are not compatible
with the audio player.
 The 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 dis-
played if the fast forward or reverse
operations are used.
 It is not possible to check folders
that do not include
MP3/WMA/AAC files.
 MP3/WMA/AAC files in folders up
to 8 levels deep can be played.
However, the start of playback may
be delayed when using discs con-
taining numerous levels of folders.
For this reason, we recommend cre-
ating discs with no more than 2 lev-
els of folders.
WMA files2ch
AAC files1ch, 2ch (Dual chan-
nel is not supported)
File typeChannel mode

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4-6. Tips for operating the audio/visual system
Audio/visual system
ital letters and numbers. The “_”
symbol may also be included.)
 Level 2: The file name can have up
to 31 characters (including the sep-
aration mark “.” and file extension).
Each folder must contain fewer than
8 hierarchies.
■MP3
 MP3 is an audio compression stan-
dard determined by a working
group (MPEG) of the ISO (Interna-
tional Standard Organization). MP3
compresses audio data to about
1/10 the size of that on conventional
discs.
■WMA
 WMA (Windows Media Audio) is
an audio compression format devel-
oped by Microsoft®. It compresses
files into a size smaller than that of
MP3 files. The decoding formats for
WMA files are Ver. 7, 8 and 9.
 This product is protected by certain
intellectual property rights of
Microsoft Corporation and third
parties. Use or dist ribution of such
technology outside of this product is
prohibited without a license from
Microsoft or an authorized
Microsoft subsidiary and third par-
ties.
■AAC
 AAC is short for Advanced Audio
Coding and refers to an audio com-
pression technology standard used
with MPEG2 and MPEG4.
■CD/DVD
■USB
Error messages
MessageExplanation
“Check DISC”
It indicates that the
disc is dirty, dam-
aged, or it was
inserted upside
down. Clean the
disc or insert it cor-
rectly.
It indicates a disc
which is not playable
is inserted.
“DISC error”
There is a trouble
inside the system.
Eject the disc.
“Region code error”
It indicates that the
DVD region code is
not set properly.
MessageExplanation
“USB error”
This indicates a
problem in the USB
memory or its con-
nection.
“No music files
found.”
This indicates that
no
MP3/WMA/AAC
files are included in
the USB memory.
“No video files
found.”
This indicates that
no video files are
included in the USB
memory.