Alpine iLX-407A Owner's Manual page 55

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.
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/FLAC/WAV
MP3/WMA/AAC files are prepared, then written to a USB
flash drive.
• Maximum numbers of playable files/folders
USB Flash drive: 10,000 files/folders (including Root
Folder)
• Largest playable file size: 512 MB
Playback may not be performed if a USB flash drive
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 a USB flash
drive.
Corresponding File Systems
This device supports FAT 16/32.
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).
Order of files
Files are played back in the order that the writing
software writes them to the USB flash drive. Therefore,
the playback order may not be what's expected. Verity
the writing order in the software's documentation. The
playback order of the folders and files is as follows. (The
following numbers may differ from actually displayed
numbers.)
Root
Folder
Folder
Terminology
Bit rate
This is the "sound" compression rate specified for
encoding. The higher the bit rate, the higher the sound
quality, but also the larger the files.
Sampling rate
This value shows how many times per second the data is
sampled (recorded). For example, music CDs use a
sampling rate of 44.1 kHz, so the sound is sampled
(recorded) 44,100 times per second. The higher the
sampling rate, the higher the sound quality, but also the
larger the volume of data.
Encoding
Converting music CDs, WAVE (AIFF) files, and other
sound files into the specified audio compression format.
Tag
Song information such as track titles, artist names,
album names, etc., written into MP3/WMA/AAC/FLAC/
WAV (USB flash drive) files.
Root folder
The root folder (or root directory) is found at the top of
the file system. The root folder contains all folders and
files. It is created automatically for all USB flash drive.
MP3/WMA/AAC/
FLAC/WAV File
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