RAM 2011 Truck Chassis Cab Owner's Manual page 219

218 UNDERSTANDING YOUR INSTRUMENT PANEL
When using the MP3 encoder to compress audio data to
an MP3 file, the bit rate and sampling frequencies in the
following table are supported. In addition, variable bit
rates (VBR) are also supported. The majority of MP3 files
use a 44.1 kHz sampling rate and a 192, 160, 128, 96 or
VBR bit rate.
MPEG Sampling Fre-
Specification quency (kHz)
MPEG-1 Audio
48, 44.1, 32
Layer 3
MPEG-2 Audio
24, 22.05, 16
Layer 3
ID3 Tag information for artist, song title, and album title
are supported for version 1 ID3 tags. ID3 version 2 is not
supported by the radios.
Playlist files are not supported. MP3 Pro files are not
supported.
Playback of MP3 Files
When a medium containing MP3 data is loaded, the
radio checks all files on the medium. If the medium
contains a lot of folders or files, the radio will take more
time to start playing the MP3 files.
Bit Rate (kbps)
Loading times for playback of MP3 files may be affected
320, 256, 224, 192,
by the following:
160, 128, 112, 96,
80, 64, 56, 48, 40,
• Media - CD-RW media may take longer to load than
32
160, 128, 144, 112,
• Medium formats - Multisession discs may take longer
96, 80, 64, 56, 48,
40, 32, 24, 16, 8
• Number of files and folders - Loading times will
CD-R media
to load than non-multisession discs
increase with more files and folders