2-26
AUDIO SYSTEM
PART 2
AUDIO SYSTEM
USB MP3
USB MP3 related information and
precaution
●
Information
•
The MP3 file standards supported by the
device are as follows.
•
Acceptable standard: MPEG1 AUDIO LAYER 3
•
Acceptable sampling frequency: 32, 44.1, 48
(kHz)
•
Acceptable bit rate : 32, 40, 48, 56, 64, 80,
96, 112, 128, 160, 192, 224, 256, 320 (kbps)
•
Recommended bit rate & reference sam-
pling frequency: 96,128, 192 kbps fixed bit
rate /44.1kHz
•
ID3 tag
This device supports ID3v1.0, ID3v1.1,
ID3v2.2, ID3v2.3, and ID3v2.4 ID3 tags.
•
Supported media
The MP3 media supported by the device are
CD-ROM and USB.
•
Supported media formats
This device supports ISO9660 LEVEL1 and
LEVEL2. Detailed specification is as below.
•
Maximum directory layers: 20 layers
•
Maximum length of folder name/file name:
250Bytes
•
Supported characters for folder name/ file
name: Alphanumeric characters, Korean
standard character set 2350 characters,
Simplified Chinese 4888 characters
•
Maximum number of folders which can be
stored onto one USB: 2000 folders (includ-
ing ROOT directory)
•
Maximum number of files which can be
stored onto one USB: 6000 files
•
Precautions upon formatting USB & down-
loading MP3 files
•
The device only supports FAT type USB file
system. The device will not play USB media
content if the USB is NTFS type.
●
Precaution
Please use an MP3 bit rate which is less than
192Kbps and a fixed bit rate.
The sound quality cannot be guaranteed for
MP3s exceeding 192Kbps and operation of
specific functions (limited to FF/REW func-
tions) may be abnormal with variable bit
rates.
Precautions upon handling USB
●
When using the external USB device, make
sure to keep the device disconnected.
Connect the device only after turning on
the vehicle ignition. The USB device may be
damaged if the USB device already connect-
ed when the ignition is turned on. (USB
device is not an electronic automotive com-
ponent)
●
The external USB device may not operate if
the USB device already connected when
vehicle ignition is turned on or off.
●
The device will not operate when playing a
format which is not MP3 or WMA file for-
mats.
