2010 TOYOTA PRIUS audio

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3-2. Using the audio system
3
Interior features
PRIUS_U (OM47668U) U.S.A.
■
Lens cleaners
 P. 308
■ MP3 and WMA files
MP3 (MPEG Audio LAYER3) 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
TM Audio) 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

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●WMA file compatibility
• Compatible standards
WMA Ver. 7, 8, 9
• Compatible sampling frequencies 
32, 44.1, 48 (kHz)
• Compatible bit rates (only compatible with 2-channel playback) 
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)
● 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 2 
CD-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

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PRIUS_U (OM47668U) U.S.A.
●
File names
The only files that can be recogniz ed as MP3/WMA and played are those
with the extension .mp3 or .wma.
● 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 unnec-
essary folders.
If the discs contain a mixture of music data and MP3 or WMA format data,
only music data can be played.

318 3-2. Using the audio system
PRIUS_U (OM47668U) U.S.A.
●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.
● Playback
• To play MP3 file with steady sound quality, we recommend a fixed bit
rate of 128 kbps and a sampling frequency of 44.1 kHz.
• CD-R or CD-RW playback may not be possible in some instances, depending 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 possible at all.
• Microsoft, Windows, and Windows Media are the registered trade- marks of Microsoft Corporation in the U.S. and other countries.
NOTICE
■CDs and adapters that cannot be used
 P. 309
■ Player precautions
 P. 310

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PRIUS_U (OM47668U) U.S.A.
Optimal use of the audio system
Using the AUDIO CONTROL function■ Changing modes
Pressing selects the mode to be change in the following
order.
“BAS”  “MID”  “TRE”  “FAD”  “BAL”  “ASL”
Displays the current mode
Changes the following set-
tings
• Sound quality and vol-
ume balance
The sound quality and bal-
ance setting can be
changed to produce the
best sound.
• Volume and tone quality
level (Automatic Sound
Levelizer)
ITO32P125

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Adjusting sound quality
Turning adjusts the level.
*: The sound quality level is adjusted individually in each radio or CD mode.
Sound quality
modeMode
displayedLevelTurn to the leftTurn to the right
Low-pitched tones
*BAS -5 to 5
Low High
Mid-pitched
tones
*
MID
(type A only) -5 to 5
High pitched tones
*TRE -5 to 5
Front/rear
volume balance FAD F7 to R7 Shifts to rear Shifts to
front
Left/right volume balance BAL L7 to R7 Shifts to left Shifts to right

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PRIUS_U (OM47668U) U.S.A.
■
Adjusting the Automatic Sound Levelizer (ASL)
Type A
When “ASL” is selected, turning to the right turns ASL on,
and turning to the left turns ASL off.
ASL automatically adjusts the volume and tone quality according to the
noise level as you drive your vehicle.
Type B
When “ASL” is selected, turni ng to the right changes the
ASL level in the order of “LOW” , “MID” and “HIGH”.
Turning to the left turns off the ASL.
ASL automatically adjusts the volume and tone quality according to vehi-
cle speed.

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Using the AUX adapter
: If equipped
■Operating portable audio devices connected to the audio system
The volume can be adjusted using the vehicle’s audio controls. All other
adjustments must be made on the portable audio device itself.
■ When using a portable audio device connected to the power outlet
Noise may occur during playback. Use the power source of the portable
audio device.
This adapter can be used to connect a portable audio device and lis-
ten to it through the vehicle’s speakers.
Connect the portable audio
device.
Press .
ITO32P109
STEP1
ITO32P106
STEP2