Mercedes-Benz C-Class Operator's Manual page 162

204_AKB; 2; 39, en-US
d2ureepe,
Audio system
160
The audio system uses these names for the
corresponding display in MP3 mode. Empty
folders or folders which contain data other
than MP3/WMA tracks are not displayed by
the audio system.
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. The audio system will
then show the name of the root directory as
the folder name.
You must observe the following when
assigning track names:
Track names must have at least one
R
character.
Track names must have the extension
R
"mp3" or "wma".
There must be a period between the track
R
name and the extension.
Example of a correct track name:
Track1.mp3
The audio system is unable to recognize an
MP3/WMA track if:
there is no period between the track title
R
and the extension
there is no extension
R
i The audio system does not support ID3
tags.
Compatible file systems and compression
methods
The following compression methods are
compatible:
MP3
R
WMA
R
i If music files created using different
compression methods other than MP3 are
stored together on a disc, the loading
process may take longer.
2008-10-10T14:14:44+02:00 - Seite 160
Version: 2.11.4
Permissible MP3 formats
The audio system supports the MPEG1 Audio
Layer 3 format.
i
This format is generally known as "MP3".
Permissible bit and sampling rates
Fixed and variable bit rates up to
R
320 kbit/s
Sampling rates of 24 kHz – 48 kHz
R
i Only use MP3 tracks with a bit rate of at
least 128 kbit/s or higher and a sampling
rate of at least 44.1 kHz or higher. Smaller
rates can cause a noticeable deterioration
in sound quality. This is especially the case
if you have activated the surround sound
function.
®
WMA (Windows Media
®
Windows Media Audio (WMA) is an audio
data compression technology developed by
®
Microsoft .
The audio system supports the following
types of audio files:
fixed bit rates of 5 kbit/s up to
R
384 kbit/s
sampling rates from 8 kHz to 48 kHz
R
The audio system does not support the
following WMA files:
DRM (Digital Rights Management) coded
R
files
variable bit rates
R
WMA Pro
R
5.1 Surround
R
Notes on copyright
The music tracks that you create and play
back in the MP3 and WMA format are
generally subject to copyright protection in
accordance with the applicable international
and national regulations.
In many countries, reproductions are not
permitted without the prior consent of the
copyright holder, not even for private use.
Audio)