audio Lexus GS450h 2009 Repair Manual

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■MP3 and WMA files
MP3 (MPEG Audio LAYER 3) is a standard audio compression format.
Files can be compressed to approximately 1 /10 of their original size by using MP3
compression.
WMA (Windows Media
TMAudio) is a Microsoft audio compression format.
This format compresses audio data to a size smaller than that of the MP3 format.
There is a limit to the MP3 and WMA file standards and to the media/formats
recorded by them that can be used.
●MP3 file compatibility
• Compatible standards MP3 (MPEG1 LAYER3, MPEG2 LSF LAYER3)
• Compatible sampling frequencies MPEG1 LAYER3: 32, 44.1, 48 (kHz)
MPEG2 LSF LAYER3: 16, 22.05, 24 (kHz)
• Compatible bit rates MPEG1 LAYER3: 64, 80, 96, 112, 128, 160, 192, 224, 256, 320 (kbps)
• MPEG2 LSF LAYER3: 64, 80, 96, 112, 128, 144, 160 (kbps)
*: Compatible with VBR
• Compatible channel modes: stereo, joint stereo, dual channel and monaural
●WMA file compatibility
• Compatible standards WMA Ver. 7, 8, 9
• Compatible sampling frequencies 32, 44.1, 48 (kHz)
• Compatible bit rates Ver. 7, 8: CBR 48, 64, 80, 96, 128, 160, 192 (kbps)
Ver. 9: CBR 48, 64, 80, 96, 128, 160, 192, 256, 320 (kbps)
*: Only compatible with 2-channel playback
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●Compatible media
Media that can be used for MP3 and WMA playback are CD-Rs and CD-RWs.
Playback in some instances may not be possible, depending on the status of the
CD-R or CD-RW. Playback may not be possible or the audio may jump if the disc
is scratched or marked with fingerprints.
●Compatible disc formats
The following disc formats can be used.
• Disc formats: CD-ROM Mode 1 and Mode 2CD-ROM XA Mode 2, Form 1 and Form 2
• File formats: ISO9660 level 1, level 2, (Romeo, Joliet) MP3 and WMA files written in any format other than those listed above may
not play correctly, and their file names and folder names may not be displayed
correctly.
Items related to standards and limitations are as follows:
• Maximum directory hierarchy: 8 levels
• Maximum length of folder names/file names: 32 characters
• Maximum number of folders: 192 (including the root)
• Maximum number of files per disc: 255
●File names
The only files that can be recognized as MP3/WMA and played are those with
the extension .mp3 or .wma.
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●Multi-sessions
As the audio system is compatible with multi-sessions, it is possible to play discs
that contain MP3 and WMA files. However, only the first session can be played.
●ID3 and WMA tags
ID3 tags can be added to MP3 files, making it possible to record the track title
and artist name, etc.
The system is compatible with ID3 Ver. 1.0, 1.1, and Ver. 2.2, 2.3 ID3 tags. (The
number of characters is based on ID3 Ver. 1.0 and 1.1.)
WMA tags can be added to WMA files, making it possible to record the track
title and artist name in the same way as with ID3 tags.
●MP3 and WMA playback
When a disc containing MP3 or WMA files is inserted, all files on the disc are first
checked. Once the file check is finished, the first MP3 or WMA file is played. To
make the file check finish more quickly, we recommend you do not write in any
files other than MP3 or WMA files or create any unnecessary folders.
Discs that contain a mixture of music data and MP3 or WMA format data cannot
be played.
●Extensions
If the file extensions .mp3 and .wma are used for files other than MP3 and WMA
files, they will be mistakenly recognized and played as MP3 and WMA files. This
may result in large amounts of interference and damage to the speakers.
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●Playback
• To play MP3 files with steady sound quality, we recommend a fixed bit rate of128 kbps and a sampling frequency of 44.1 kHz.
• CD-R or CD-RW playback may not be possible in some instances, depend- ing on the characteristics of the disc.
• There is a wide variety of freeware and other encoding software for MP3 and WMA files on the market, and depending on the status of the encoding and
the file format, poor sound quality or noise at the start of playback may result.
In some cases, playback may not be possible at all.
• When files other than MP3 or WMA files are recorded on a disc, it may take more time to recognize the disc and in some cases, playback may not be pos-
sible at all.
• Microsoft, Windows, and Windows Media are the registered trademarks of Microsoft Corporation in the U.S. and other countries.
■CD-R and CD-RW discs
●CD-R/CD-RW discs that have not been subject to the “finalizing process” (a
process that allows discs to be played on a conventional CD player) cannot be
played.
●It may not be possible to play CD-R/CD-RW discs recorded on a music CD
recorder or a personal computer because of disc characteristics, scratches or
dirt on the disc, or dirt, condensation, etc. on the lens of the unit.
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●It may not be possible to play discs recorded on a personal computer depend-
ing on the application settings and the environment. Record with the correct
format. (For details, contact the appropriate application manufacturers of the
applications.)
●CD-R/CD-RW discs may be damaged by direct exposure to sunlight, high
temperatures or other storage conditions. The unit may be unable to play dam-
aged discs.
●If you insert a CD-RW disc into the MP3/WMA player, playback will begin
more slowly than with a conventional CD or CD-R disc.
●Recordings on CD-R/CD-RW cannot be played using the DDCD (Double
Density CD) system.
CAUTION
■DVD video precaution
Conversational speech on some DVDs is recorded at a low volume to emphasize
the impact of sound effects. If you adjust the volume assuming that the conversa-
tions represent the maximum volume level that the DVD will play, you may be star-
tled by louder sound effects or when you change to a different audio source.
Loud sounds may have a significant impact on the human body or pose a driving
hazard. Keep this in mind when you adjust the volume.
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NOTICE
■Discs and adapters that cannot be used
Do not use the following types of discs, 3 in. (8 cm) disc adapters or Dual Disc.
Doing so may damage the player and render the disc insert/eject function unus-
able.
●Discs that have a diameter that is not 4.7 in.
(12 cm).
●Low-quality and deformed discs.
●Discs with a transparent or translucent
recording area.
●Discs that have tape, stickers or CD-R
labels attached to them, or that have the
label peeled off.
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NOTICE
■Player precautions
Failure to follow the precautions below may result in damage to the discs or the
player itself.
●Do not insert anything other than discs into the disc slot.
●Do not apply oil to the player.
●Store discs away from direct sunlight.
●Never try to disassemble any part of the player.
●Do not insert more than one disc at a time.
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Optimal use of the audio/video system
Press on the panel to display the audio/video control screen.
Operating the radio, cassette and audio CD
Operating the DVD video/audio and video CD
Adjust sound
quality and balanceAdjust the DSP
Adjust screen ratio
Adjust sound
quality and balance
Adjust the DSP
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Adjusting sound quality and balanceTouch on the screen. Adjust the settings, referring to the
following table.
Once you have finished, touch.
*: The sound quality level is adjusted individually in each radio, cassette tape, CD or DVD mode.
STEP1
STEP2
Sound quality
modeDisplayLevelTo u c h
High-pitched tones*-5 to 5
or Mid-pitched tones*-5 to 5
Low-pitched tones*-5 to 5
Front/rear
volume balanceF7 to R7 or
Left/right volume balanceL7 to R7 or
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Setting DSPThe following features can be set as desired by touching on the
screen. With CD player
With DVD player
■ Turning Automatic Sound Levelizer (ASL) ON or OFF
Touch or .
ASL automatically adjusts the volume and tone quality according to
the noise level as you drive your vehicle.
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