Operation Manual

Audio Files(MP3/WMA/AAC/WAV)
87
AV Audio Functions
What Is MP3?
MP3 is an abbreviation of “MPEG-1 Audio
Layer 3”. MPEG is an abbreviation of “Motion
Picture Experts Group”, and this is a video
compression standard used in video CDs, etc.
MP3 is one of the audio compression methods
contained in the MPEG audio standard, and
reduces the quality of sounds that are beyond
the auditory resolution of the human ear
and that are hidden by louder sounds, thus
creating high-quality data with a lower data
size.
Because this can compress CD audio to
approximately 1/10 its original data size
without perceptible loss, approximately 10
CDs can be written to a single CD-R/RW disc.
CAUTION
• MP3 les different to the standards at
right may not play back correctly, or
le/folder names may not be displayed
correctly.
Standards for MP3 Files That Can Be Played Back
Specications for MP3 les that can be played are as below.
* For vehicles with the Bluetooth
®
2.0 interface, refer to the vehicle's user manual (Bluetooth
®
2.0 interface).
Item Details
Specication MPEG-1 AUDIO LAYER3
MPEG-2 AUDIO LAYER3
Sampling frequency [kHz] MPEG-1:32/44.1/48
MPEG-2:16/22.05/24
Bit rate [kbps] MPEG-1:32~320
MPEG-2:32~160
VBR (variable bit rate) Support
Channel mode Stereo/Joint stereo/Dual channel/Monaural
File extension mp3
Supported tag information ID3 tag Ver. 1.0, Ver. 1.1, Ver. 2.2, Ver. 2.3, Ver. 2.4
(ISO-8859-1, UTF-16 (Unicode)),
Titles, Artist name, Album name
Maximum number of characters
that can be indicated on the source
plate
*1
Album names: 41 single-byte characters (20 double-byte characters)
Title names: 18 single-byte characters (9 double-byte characters)
Maximum number of characters
that can be indicated in a list
*1
Folder names : 46 single-byte characters (23 double-byte characters)
Files names : 34 single-byte characters (17 double-byte characters)
When folder list
displayed
48 single-byte characters (24 double-byte characters)
* In the 2nd level (the root being the 1st level)
* The number of characters displayed depends on the
level. Each level down has 2 single-byte characters
(1 double-byte character) less.
When track list
displayed
Files names: 49 single-byte characters (24 double-
byte characters)
*1 Depending on the characters used, you may not be able to input the maximum number of characters.