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Additional Information
Terms
A2DP
A2DP is short for Advanced Audio Distribution
Profile. This profile allows the high quality
audio data of either stereo or monaural to be
transmitted via Bluetooth wireless technology.
AAC
AAC is short for Advanced Audio Coding and
refers to an audio compression technology
standard used with MPEG 2 and MPEG 4.
AVRCP
AVRCP is short for Audio/Video Remote Con-
trol Profile. This profile enables interoperability
between audio and video features of the Blue-
tooth device connected via Bluetooth wireless
technology.
Bit rate
This expresses data volume per second, or bps
(bits per second) units. The higher the rate,
the more information is available to reproduce
the sound. Using the same encoding method
(such as MP3), the higher the rate, the better
the sound.
Bluetooth
Bluetooth is a short-range wireless radio con-
nectivity technology that is developed as a
cable replacement for mobile phones, hand-
held PCs and other devices. Bluetooth oper-
ates in 2.4 GHz frequency range and transmits
voice and data at speeds up to 1 megabit per
second. Bluetooth was launched by a special
interest group (SIG) that comprises of Ericsson
Inc., Intel Corp., Nokia Corp., Toshiba and IBM
in 1998, and it is currently developed by nearly
2 000 companies worldwide.
GAP
GAP is short for Generic Access Profile. This is
a basic profile of Bluetooth wireless technol-
ogy.
HFP
HFP is short for Hands Free Profile. This profile
is used for hands-free phoning with the de-
vices featuring Bluetooth wireless technology.
HSP
HSP is short for Head Set Profile. This profile
is used for connecting headset and communi-
cation terminal via Bluetooth wireless technol-
ogy.
ID3 tag
This is a method of embedding track-related
information in an MP3 file. This embedded in-
formation can include the track title, the ar-
tist's name, the album title, the music genre,
the year of production, comments and other
data. The contents can be freely edited using
software with ID3 Tag editing functions.
Although the tags are restricted as to the num-
ber of characters, the information can be
viewed when the track is played back.
ISO9660 format
This is the international standard for the for-
mat logic of CD-ROM folders and files. For the
ISO9660 format, there are regulations for the
following two levels.
Level 1:
The file name is in 8.3 format (the name con-
sists of up to 8 characters, half-byte English
capital letters and half-byte numerals and the
"_" sign, with a file-extension of three charac-
ters).
Level 2:
The file name can have up to 31 characters (in-
cluding the separation mark "." and a file ex-
tension). Each folder contains less than 8
hierarchies.
Extended formats
Joliet:
File names can have up to 64 characters.
Romeo:
File names can have up to 128 characters.
Appendix
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