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Information
Product Software Update
This product use software that can be updated through a
USB flash drive. Download the software from the Alpine
website and update the product using the USB flash drive.
Updating this product
Check the Alpine website for details on updating.
https://www.alpine.com.au
Important information on the software
About the software license of the product
The software installed in the product contains open-source
software.
For details, refer to the "Open source licenses" screen on this
unit. See "Displaying Warranty/Copyright Information"
(page 17).
About the Supported Formats
About MP3/WMA/AAC/FLAC/WAV
CAUTION
Except for private use, duplicating audio data
(including MP3/WMA/AAC/FLAC/WAV 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.
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 realizes
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.
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What is FLAC?
FLAC (Free Lossless Audio Codec) is an audio file codec
for lossless compression, developed and offered as open
source software.
Codecs with lossy compression forms, such as MP3 and
AAC, reduce part of the data to improve compression
efficiency.
However, FLAC can reconstruct compressed data to be
an identical copy of the original data by performing
lossless compression. The compression ratio of FLAC is
about 50%.
Method for creating MP3/WMA/AAC/FLAC/WAV (USB
Flash drive) files
Audio data is compressed using software with MP3/
WMA/AAC/FLAC/WAV (USB Flash drive) codecs. For
details on creating MP3/WMA/AAC/FLAC/WAV (USB
Flash drive) files, refer to the user's manual for that
software.
MP3/WMA/AAC/FLAC/WAV (USB Flash drive) files that
are playable on this device have the file extensions.
MP3: "mp3"
WMA: "wma"
AAC: "m4a"
FLAC: "flac"/"fla"
WAV: "wav"
WMA is not supported for the following files, Windows
Media Audio Professional, Windows Media Audio 10 std
or Windows Media Audio 10 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 (USB Flash drive)
Sampling rates:
8 kHz, 11.025 kHz, 12 kHz,
16 kHz, 22.05 kHz, 24 kHz,
32 kHz, 44.1 kHz, 48 kHz
Bit rates:
8 - 320 kbps
WMA (USB Flash drive)
Sampling rates:
8 - 48 kHz
Bit rates:
8 - 384 kbps
AAC (USB Flash drive)
Sampling rates:
8 - 48 kHz
Bit rates:
8 - 384 kbps
FLAC (USB Flash drive)
Sampling rates:
8 - 48 kHz
Bit rates:
8 - 384 kbps
WAV (USB Flash drive)
Sampling rates:
8 - 48 kHz
Bit rates:
64 - 1,536 kbps
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