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When using the MP3/WMA encoder to compress audio
data to an MP3/WMA 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/WMA files use a 44.1 kHz sampling rate
and a 192, 160, 128, 96 or VBR bit rates.
MPEG
Specification
Sampling Fre-
quency (kHz)
Bit rate (kbps)
MPEG-1 Audio
Layer 3
48, 44.1, 32
320, 256, 224,
192, 160, 128,
112, 96, 80, 64,
56, 48
MPEG-2 Audio
Layer 3
24, 22.05, 16
160, 128, 144,
112, 96, 80, 64,
56, 48
WMA
Specification
Sampling Fre-
quency (kHz)
Bit Rate (kbps)
WMA 44.1 and 48
48, 64, 96, 128,
160, 192 VBR
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/WMA Files
When a medium containing MP3/WMA 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/WMA files.
Loading times for playback of MP3/WMA files may be
affected by the following:
•
Media - CD-RW media may take longer to load than
CD-R media
•
Medium formats - Multisession discs may take longer
to load than non-multisession discs
•
Number of files and folders - Loading times will
increase with more files and folders
To increase the speed of disc loading, it is recommended
to use CD-R media and single-session discs. To create a
single-session disc, enable the Disc at Once option before
writing to the disc.
UNDERSTANDING YOUR INSTRUMENT PANEL 169
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