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● Do not place the Bluetoothா audio device in
anarea surroundedbymetalor farawayfrom
the in-vehicle Bluetoothா module to prevent
tone quality degradation and wireless con-
nection disruption.
● While an audio device is connected through
the Bluetoothாwireless connection,thebat-
tery power of the device may discharge
quicker than usual.
● This system supports the Bluetoothா Audio
Distribution Profile (A2DP, AVRCP).
BLUETOOTH is a
trademark owned by
Bluetooth SIG, Inc.,
U.S.A. and licensed
to Clarion.
CD or USB with Compressed Audio
Files (models without Navigation
System)
The file types supported by this system are MP3
and WMA.
Explanation of terms:
● MP3 — MP3 is short for Moving Pictures
Experts Group Audio Layer 3. MP3 is the
most well-known compressed digital audio
file format. This format allows for near “CD
quality”sound, but at a fraction of the size of
normal audio files. MP3 conversion of an
audio track from CD-ROM can reduce the
file size by approximately a 10:1 ratio with
virtually no perceptible loss in quality. MP3
compression removes the redundant and
irrelevant parts of a sound signal that the
human ear doesn’t hear.
● WMA— WindowsMediaAudio (WMA)*isa
compressed audio format created by Mi-
crosoft as an alternative to MP3. The WMA
codec offers greater file compression than
the MP3 codec, enabling storage of more
digital audio tracks in the same amount of
space when compared to MP3sat the same
level of quality.
● Bit rate — Bit rate denotes the number of
bits per second used by a digital music file.
The size and quality of a compressed digital
audio file is determined by the bit rate used
when encoding the file.
● Sampling frequency — Sampling frequency
is the rate at which the samples of a signal
are converted from analog to digital (A/D
conversion) per second.
● Multisession — Multisession is one of the
methods for writing data to media. Writing
data once to the media is called a single
session,and writingmorethan onceiscalled
a multisession.
● ID3/WMA Tag — The ID3/WMA tag is the
part of the encoded MP3 or WMA file that
contains information about the digital music
file such as song title, artist, encoding bit
rate, track time duration, etc. ID3 tag infor-
mation is displayed on the Artist/song title
line on the display.
* Windowsா, Windows Mediaா and Windows
Vistaா are registered trademarks and trademarks
in the United States of America and other coun-
tries of Microsoft Corporation of the USA.
4-54 Monitor, climate, audio, phone and voice recognition systems