Copyright - Mercedes-Benz Audio 20 Operating Instructions Manual

Audio mode
94
File structure of a data carrier
When you create a disc with compressed
music files, the tracks can be organized in
folders. A folder may also contain subfolders.
The disc may contain no more than eight
directory levels (a root and seven sub-levels).
Files beyond the eighth level will not be rec-
ognized by the system.
Audio 20 supports up to 15,000 files for
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all of the connected sources.
Track and file names
When you create a disc with compressed
music files, you can assign names to the
tracks and folders.
You should observe the following when
assigning track names:
track names must have at least one char-
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acter.
track names must have an extension of a
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supported audio format, e.g. mp3 or aac.
there must be a dot between the track
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name and the extension.
Example of a correct track name:
"Track1.mp3".
Permissible formats
Audio 20 supports the following audio for-
mats:
MP3
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WMA
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CD-A
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AAC formats: .aac, .mp4, .m4a and .m4b
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Copy-protected iTunes
the .m4p file extension are not supported.
Permissible bit and sampling rates
Audio 20 supports the following types of MP3
files:
fixed and variable bit rates from 32 kbit/s
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to 320 kbit/s
sampling rates of 8 kHz to 48 kHz
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® music files with
Audio 20 supports the following types of
WMA files:
fixed bit rates from 5 kbit/s to 384 kbit/s
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sampling rates of 8 kHz to 48 kHz
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Audio20 does not support the following types
of WMA files:
DRM (Digital Rights Management) encryp-
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ted files
variable bit rate
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WMA Pro
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5.1 surround sound
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Only use tracks with a bit rate of at least
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128 kbit/s and a sampling rate of at least
44.1 kHz. Lower rates can cause a notice-
able deterioration in quality. This is espe-
cially the case if you have activated a sur-
round sound function.
Selecting an active partition (USB mass
storage devices only)
You can select this function for USB storage
devices when the storage device is parti-
tioned. Up to 9 partitions (primary or logical,
FAT, FAT32, exFAT and NTFS) are supported.
Selecting an active partition
Options
To select in the media menu bar:
X
turn and press the controller.
Select Active
Select
X
Notes on copyright
Audio files that you create or reproduce your-
self for playback are generally subject to
copyright protection.
In many countries, reproductions, even for
private use, are not permitted without the
prior consent of the copyright holder.
Make sure that you know about the applicable
copyright regulations and that you comply
with these.
Partition.