compression ratio TOYOTA xB 2011 Accessories, Audio & Navigation (in English)

2
ALPINE MFTY802A 68-14470Z28-C (EN)
W ARNING
•Handling the cord on this product
or cords associated with accesso-
ries sold with the product will ex-
pose you to lead, a chemical known
to the State of California and other
governmental entities to cause
cancer and birth defects or other
reproductive harm.
W ash hands
after handling.
•T urn off the radio and allow to cool
before handling as sides may be
quite hot. Supply of this product only conveys a
license for private, non-commercial use
and does not convey a license nor
imply any right to use this product in
any commercial (i.e. revenue-generat-
ing) real time broadcasting (terrestrial,
satellite, cable and/or any other media),
broadcasting/streaming via internet,
intranets and/or other networks or in
other electronic content distribution
systems, such as pay-audio or audio-
on-demand applications.
An independent license for such use
is required. For details, please visit
http://www.mp3licensing.com.
About WMA
The Windows Media™ logo printed on
the box indicates that this unit can play
back WMA data.
This device complies with Part 15 of
the FCC Rules.
Operation is subject to the following
two conditions:
(1) This device may not cause
harmful interference, and (2) this
device must accept any interference
received, including interference that
may cause undesired operation.
Information to User
Alteration or modifications carried
out without appropriate authorization
may inhibit the user ’s right to oper-
ate the equipment.
WMA is short for Windows Media Au-
dio and refers to an audio compression
technology that is developed by
Microsoft Corporation. WMA data can
be encoded by using Windows Media
Player.
Microsoft, Windows Media, and the
Windows logo are trademarks, or reg-
istered trademarks of Microsoft Corpo-
ration in the United States and/or other
countries.NOTES
• With some applications used to
encode WMA files, this unit may
not operate correctly.
• With some applications used to encode WMA files, album names
and other text information may
not be correctly displayed.
About HD Radio™
HD Radio™ Technology Manufactured
Under License From iBiquity Digital
Corp. U.S. and Foreign Patents.
HD Radio™ and the HD Radio logo are
proprietary trademarks of iBiquity Digi-
tal Corp.

44
ALPINE MFTY802A 68-14470Z28-C (EN)
original size. This is achieved while
still maintaining near CD quality. The
MP3 format realizes such high com-
pression ratios by eliminating the
sounds that are either inaudible to the
human ear or masked by other
sounds.
What is WMA?
WMA, or “Windows Media™ Audio,”
is compressed audio data.
WMA allows you to create music files
and store them at higher ratios of
compression than MP3 audio data
(approx. half original size). This is
achieved while still maintaining CD
quality sound.
What is AAC?
AAC is the abbreviation for “Ad-
vanced Audio Coding”, and is a ba-
sic format of audio compression used
by MPEG4.
Method for creating MP3/WMA/
AAC files
Audio data is compressed by using
MP3/WMA/AAC specified software.
For details on creating MP3/WMA/
AAC files, refer to the user’s manual
for that software.
Producing MP3/WMA/AAC discs
MP3/WMA/AAC files are prepared,
then written to a CD-R or CD-RW us-
ing CD-R writing software. A disc can
hold up to 509 files/folders (including Root Folders). However, the maximum
number of folder is 255. This unit can
r
ecognize at most 100 folders (includ-
ing root folder) and 100 files per folder
stored in USB memory.
Media supported
The media that this device can play
back are CD-ROMs, CD-Rs, and CD-
R Ws.
Corresponding file systems
This device supports discs formatted
with ISO9660 Level 1 or Level 2.
Under the ISO9660 standard, there
are some restrictions to remember.
The maximum nested folder depth is
8 (including the root directory). The
number of characters for a folder/file
name is limited.
Valid characters for folder/file names
are letters A-Z (all caps), numbers 0-
9, and ‘_’ (underscore).
This device also can play back discs in
Joliet, Romeo, etc., and other standards
that conform to ISO9660. However,
sometimes the file names, folder names,
etc., are not displayed correctly.
Formats supported
This device supports CD-ROM XA,
Mixed Mode CD, Enhanced CD (CD-
Extra).
This device cannot correctly play
back discs recorded with Track At
Once or packet writing.
MP3, WMA and AAC
files
IMPORTANT
• Except for private use, duplicating
audio data (including MP3/WMA/
AAC data) or distributing, transfer-
ring, or copying it, whether for free
or for a fee, without permission of
the copyright holder is strictly pro-
hibited by the Copyright Act and by
international treaty.
• MP3/WMA/AAC files that can be
played back by this device have the
file extension “mp3” / “wma” /
“m4a”. Files with no extension can-
not be played back.
What is MP3?
MP3, whose official name is “MPEG-
1 Audio Layer 3,” is a compression
standard prescribed by the ISO, the
International Standardization Organi-
zation and MPEG which is a joint ac-
tivity institution of the IEC.
MP3 files contain compressed audio
data. MP3 encoding is capable of
compressing audio data at extremely
high ratios, reducing the size of mu-
sic files to as much as one-tenth their