33
-EN
01GB05INE-W957A.fm
ALPINE INE-W957A 68-24567Z47-A (EN)
About MP3/WMA/AAC
What is MP3?
MP3, whose official name is “MPEG Audio Layer 3”, is a
compression standard prescribed by the ISO, the International
Standardization Organization and MPEG which is a joint activity
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 music files to as much as one-tenth their
original size. This is achieved while still maintaining near CD
quality. The MP3 format realises such high compression 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 is similar to MP3 audio data.
What is AAC?
AAC is the abbreviation for “Advanced Audio Coding”, and is a
basic format of audio compression used by MPEG2 or MPEG4.
Method for creating MP3/WMA/AAC files
Audio data is compressed using software with MP3/WMA/AAC
codecs. For details on creating MP3/WMA/AAC files, refer to the
user’s manual for that software.
MP3/WMA/AAC files that are playable on this device have the
file extensions.
MP3: “mp3”
WMA: “wma” (ver. 7.x, 8.x, 9.x are supported)
AAC: “m4a”
WMA is not supported for the following files, Windows Media
Audio Professional, Windows Media Audio 9 Voice or Windows
Media Audio 9 Pro Lossless.
There are many different versions of the AAC format. Confirm
that the software being used conforms to the acceptable
formats listed above. It’s possible that the format may be
unplayable even though the extension is valid.
Playback of AAC files encoded by iTunes is supported.
Supported playback sampling rates and bit rates
MP3
WMA
AAC
This device may not play back correctly depending on sampling
rates.
ID3 tags/WMA tags
This device supports ID3 tag v1.0, v1.1, v2.2, v2.3, v2.4, and
WMA tag Ver.1.x. If tag data is in an MP3/WMA/AAC file, this
device can display the title (track title), artist name, and album
name ID3 tag/WMA tag data (maximum 64 characters).
For non-supported characters, “?” is displayed.
The number of characters may be limited, or not correctly
displayed, depending on the tag information.
Playing back MP3/WMA/AAC
MP3/WMA/AAC files are prepared, then written to a CD-R, CD-
RW (DVD-R/DVD-RW/DVD+R/DVD+RW) using CD-R writing
software and USB memory.
• Maximum numbers of playable files/folders
Disc: 1,000 files/folders (including Root Folder/DivX
®
file)
USB memory: 10,000 files/folders (including Root Folder/
DivX
®
file)
• Largest playable file size: 512 MB
Playback may not be performed if a disc exceeds the limitations
described above.
If a file/folder name is long, the maximum possible number of
files may decrease.
• Both Audio and Video files are counted if their formats are
playable on this unit.
Media supported
The media that this device can play back are CD-ROMs, CD-Rs,
CD-RWs, DVD-Rs, DVD-RWs, DVD+Rs, DVD+RWs and USB
memory.
Corresponding File Systems
This device supports discs formatted with ISO9660 Level 1 or
Level 2, UDF1.02 and UDF1.02(ISO Bridge).
This device 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 Mode1, CD-ROM XA
Mode2(Form1&2), Mixed Mode CD and Multi-Session.
This device cannot correctly play back discs recorded with
Track At Once or packet writing.
CAUTION
Except for private use, duplicating audio data (including MP3/
WMA/AAC data) or distributing, transferring, or copying it,
whether for free or for a fee, without permission of the copyright
holder is strictly prohibited by the Copyright Act and by
international treaty.
Sampling rates: 48 kHz, 44.1 kHz, 32 kHz, 24 kHz, 22.05 kHz,
16 kHz, 12 kHz, 11.025 kHz, 8 kHz
Bit rates:
8 - 320 kbps
Sampling rates: 48 kHz, 44.1 kHz, 32 kHz, 22.05 kHz, 16 kHz,
11.025 kHz, 8 kHz
Bit rates:
48 - 320 kbps
Sampling rates: 48 kHz, 44.1 kHz, 32 kHz, 24 kHz, 22.05 kHz,
16 kHz, 12 kHz, 11.025 kHz, 8 kHz
Bit rates:
16 - 320 kbps
Under the ISO9660 standard, there are some restrictions to
remember.
The maximum nested folder depth is 8 (including the root
directory). File names are limited to 256 characters (including
the extension).
Valid characters for folder/file names are letters A-Z (all caps),
numbers 0-9, and ‘_’ (underscore).
01GB00INE-W957A.book Page 33 Monday, April 21, 2014 7:49 PM
