Mercedes-Benz S-Class 2010 - Manual (Page 179)

File structure on a disc
When you create an audio disc, the tracks can
be organized in folders. A disc may contain a
maximum of 4000 tracks.
The directory depth may not exceed a
maximum of 8 levels. The system will ignore
files in lower levels.
Notes on USB storage media
Do not store data other than audio data on a
USB storage medium. Doing so will increase
the time required to initialize the USB storage
medium.
A maximum of 8 directory levels with up to
4000 tracks each are supported.
For information on connecting USB storage
media to the built-in USB socket in the glove
box see (
Y page 80).
Track and folder names
When you create an audio medium, you can
assign names to the tracks and folders.
COMAND uses these names for the
corresponding display. Empty folders or
folders which contain data other than MP3/
WMA tracks are not displayed by COMAND.
If MP3/WMA files are saved in the root
directory itself (uppermost directory on
storage medium), the root directory will also
be treated as a folder. COMAND will then
show the name of the root directory as the
folder name.
You must observe the following when
assigning track names:
R
Track names must have at least one
character.
R Track names must have the extension
“mp3” or “wma”.
R
There must be a period between the track
name and the extension.
Example of a correct track name:
Track1.mp3
Compatible file systems and
compression methods
COMAND supports the following formats:
R MPEG1 Audio Layer 3 (MP3) 25
R Microsoft Windows Media Audio (WMA) V2,
V7, V8 or V9 that are not copy-proof
Bit and sampling rates
MP3
COMAND supports MP3 files of the following
types:
R
Fixed and variable bit rates from
32 kbit/s up to 320 kbit/s
R
Sampling rates of 24 kHz to 48 kHz
WMA (Windows Media ® Audio)
Windows Media ® Audio (WMA) is an audio
data compression technology developed by
Microsoft
® .
COMAND supports WMA files of the following
types:
R Fixed and variable bit rates from 5 kbit/s
up to 384 kbit/s
R
Sampling rates of 8 kHz to 48 kHz
COMAND does not support WMA files of the
following types:
R DRM (Digital Rights Management) coded
files
R
variable bit rates
R
Losless Settings
R
WMA Pro
R
5.1-Surround
i Only use tracks with a bit rate of above
128 kbit/s and a sampling rate of above
44.1 kHz. Lower rates will cause an audible
25 MPEG Layer 3 audio-coding technology under license of Fraunhofer-Institut for Integrated Circuits (IIS) and
Thomson
COMAND audio CD/audio DVD/MP3
177
Control systems
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